-//replace restart {
-// pop %1
-// push %1
-//} by {
-// ; Peephole 1 removed pop %1 push %1 (not push pop)
-//}
-
-//replace restart {
-// pop %1
-// mov %2,%3
-// push %1
-//} by {
-// ; Peephole 2 removed pop %1 push %1 (not push pop)
-// mov %2,%3
-//}
-
-//
// added by Jean Louis VERN for
// his shift stuff
-replace restart {
- xch a,%1
- xch a,%1
+replace {
+ xch a,%1
+ xch a,%1
} by {
- ; Peephole 2.a removed redundant xch xch
+ ; Peephole 2.a removed redundant xch xch
}
-replace restart {
+replace {
// saving 2 byte
- mov %1,#0x00
- mov a,#0x00
+ mov %1,#0x00
+ mov a,#0x00
} by {
- ; Peephole 3.a changed mov to clr
- clr a
- mov %1,a
+ ; Peephole 3.a changed mov to clr
+ clr a
+ mov %1,a
}
-replace restart {
+replace {
// saving 1 byte
- mov %1,#0x00
- clr a
+ mov %1,#0x00
+ clr a
} by {
- ; Peephole 3.b changed mov to clr
- clr a
- mov %1,a
+ ; Peephole 3.b changed mov to clr
+ clr a
+ mov %1,a
}
replace restart {
// saving 1 byte, loosing 1 cycle but maybe allowing peephole 3.b to start
- mov %1,#0x00
- mov %2,#0x00
- mov a,%3
+ mov %1,#0x00
+ mov %2,#0x00
+ mov a,%3
+} by {
+ ; Peephole 3.c changed mov to clr
+ clr a
+ mov %1,a
+ mov %2,a
+ mov a,%3
+}
+
+replace {
+ clr a
+ mov %1,a
+ mov %2,a
+ clr a
} by {
- ; Peephole 3.c changed mov to clr
- clr a
- mov %1,a
- mov %2,a
- mov a,%3
+ clr a
+ mov %1,a
+ mov %2,a
+ ; Peephole 3.d removed redundant clr
}
replace {
- mov %1,a
- mov dptr,#%2
- mov a,%1
- movx @dptr,a
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ clr a
} by {
- ; Peephole 100 removed redundant mov
- mov %1,a
- mov dptr,#%2
- movx @dptr,a
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ ; Peephole 3.e removed redundant clr
}
+
+replace {
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,a
+ clr a
+} by {
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,a
+ ; Peephole 3.f removed redundant clr
+}
+
+replace {
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,a
+ mov %5,a
+ clr a
+} by {
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,a
+ mov %5,a
+ ; Peephole 3.g removed redundant clr
+}
+
replace {
- mov a,acc
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,#0x00
} by {
- ; Peephole 100.a removed redundant mov
+ clr a
+ mov %1,a
+ mov %2,a
+ ; Peephole 3.h changed mov %3,#0x00 to ...,a
+ mov %3,a
}
replace {
- mov a,%1
- movx @dptr,a
- inc dptr
- mov a,%1
- movx @dptr,a
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,#0x00
} by {
- ; Peephole 101 removed redundant mov
- mov a,%1
- movx @dptr,a
- inc dptr
- movx @dptr,a
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ ; Peephole 3.i changed mov %4,#0x00 to ...,a
+ mov %4,a
}
replace {
- mov %1,%2
- ljmp %3
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,a
+ mov %5,#0x00
+} by {
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,a
+ ; Peephole 3.j changed mov %5,#0x00 to ...,a
+ mov %5,a
+}
+
+replace {
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,a
+ mov %5,a
+ mov %6,#0x00
+} by {
+ clr a
+ mov %1,a
+ mov %2,a
+ mov %3,a
+ mov %4,a
+ mov %5,a
+ ; Peephole 3.k changed mov %6,#0x00 to ...,a
+ mov %6,a
+}
+
+replace {
+ mov %1,a
+ mov dptr,#%2
+ mov a,%1
+ movx @dptr,a
+} by {
+ mov %1,a
+ mov dptr,#%2
+ ; Peephole 100 removed redundant mov
+ movx @dptr,a
+} if notVolatile %1
+
+// applies to f.e. lib/src/time.c (--model-large)
+replace {
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ mov a,%1
+ movx @dptr,a
+} by {
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ ; Peephole 101.a removed redundant moves
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+} if notVolatile %1
+
+// applies to f.e. support/regression/tests/literalop.c (--model-large)
+replace {
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ mov a,%1
+ movx @dptr,a
+} by {
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ ; Peephole 101.b removed redundant moves
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+} if notVolatile %1
+
+// applies to f.e. support/regression/tests/onebyte.c (--model-large)
+replace {
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ mov a,%1
+ movx @dptr,a
+} by {
+ mov a,%1
+ movx @dptr,a
+ inc dptr
+ ; Peephole 101.c removed redundant mov
+ movx @dptr,a
+} if notVolatile %1
+
+replace {
+ mov %1,%2
+ ljmp %3
%4:
- mov %1,%5
+ mov %1,%5
%3:
- mov dpl,%1
+ mov dpl,%1
%7:
- mov sp,bp
- pop bp
+ mov sp,_bp
+ pop _bp
} by {
- ; Peephole 102 removed redundant mov
- mov dpl,%2
- ljmp %3
+ ; Peephole 102 removed redundant mov to %1
+ mov dpl,%2
+ ljmp %3
%4:
- mov dpl,%5
+ mov dpl,%5
%3:
%7:
- mov sp,bp
- pop bp
-}
+ mov sp,_bp
+ pop _bp
+} if notVolatile(%1), labelRefCount(%3 1)
replace {
- mov %1,%2
- ljmp %3
+ mov %1,%2
+ ljmp %3
%4:
- mov a%1,%5
+ mov a%1,%5
%3:
- mov dpl,%1
+ mov dpl,%1
%7:
- mov sp,bp
- pop bp
+ mov sp,_bp
+ pop _bp
} by {
- ; Peephole 103 removed redundant mov
- mov dpl,%2
- ljmp %3
+ ; Peephole 103 removed redundant mov to %1
+ mov dpl,%2
+ ljmp %3
%4:
- mov dpl,%5
+ mov dpl,%5
%3:
%7:
- mov sp,bp
- pop bp
-}
+ mov sp,_bp
+ pop _bp
+} if labelRefCount(%3 1)
-replace {
- mov a,bp
- clr c
- add a,#0x01
- mov r%1,a
-} by {
- ; Peephole 104 optimized increment (acc not set to r%1, flags undefined)
- mov r%1,bp
- inc r%1
-}
+// Does not seem to be triggered anymore
+//replace {
+// mov a,_bp
+// clr c
+// add a,#0x01
+// mov r%1,a
+//} by {
+// ; Peephole 104 optimized increment (acc not set to r%1, flags undefined)
+// mov r%1,_bp
+// inc r%1
+//}
replace {
- mov %1,a
- mov a,%1
+ mov %1,a
+ mov a,%1
} by {
- ; Peephole 105 removed redundant mov
- mov %1,a
-}
+ mov %1,a
+ ; Peephole 105 removed redundant mov
+} if notVolatile %1
replace {
- mov %1,a
- clr c
- mov a,%1
+ mov %1,a
+ clr c
+ mov a,%1
} by {
- ; Peephole 106 removed redundant mov
- mov %1,a
- clr c
-}
+ mov %1,a
+ clr c
+ ; Peephole 106 removed redundant mov
+} if notVolatile %1
replace {
- ljmp %1
+ ljmp %1
%1:
} by {
- ; Peephole 107 removed redundant ljmp
+ ; Peephole 107 removed redundant ljmp
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- jc %1
- ljmp %5
+ jc %1
+ ljmp %5
%1:
} by {
- ; Peephole 108 removed ljmp by inverse jump logic
- jnc %5
+ ; Peephole 108.a removed ljmp by inverse jump logic
+ jnc %5
%1:
-} if labelInRange
+} if labelInRange(), labelRefCountChange(%1 -1)
replace {
- jz %1
- ljmp %5
+ jz %1
+ ljmp %5
%1:
} by {
- ; Peephole 109 removed ljmp by inverse jump logic
- jnz %5
+ ; Peephole 108.b removed ljmp by inverse jump logic
+ jnz %5
%1:
-} if labelInRange
+} if labelInRange(), labelRefCountChange(%1 -1)
replace {
- jnz %1
- ljmp %5
+ jnz %1
+ ljmp %5
%1:
} by {
- ; Peephole 110 removed ljmp by inverse jump logic
- jz %5
+ ; Peephole 108.c removed ljmp by inverse jump logic
+ jz %5
%1:
-} if labelInRange
+} if labelInRange(), labelRefCountChange(%1 -1)
replace {
- jb %1,%2
- ljmp %5
+ jb %1,%2
+ ljmp %5
%2:
} by {
- ; Peephole 111 removed ljmp by inverse jump logic
- jnb %1,%5
+ ; Peephole 108.d removed ljmp by inverse jump logic
+ jnb %1,%5
%2:
-} if labelInRange
+} if labelInRange(), labelRefCountChange(%2 -1)
replace {
- jnb %1,%2
- ljmp %5
+ jnb %1,%2
+ ljmp %5
%2:
} by {
- ; Peephole 112 removed ljmp by inverse jump logic
- jb %1,%5
+ ; Peephole 108.e removed ljmp by inverse jump logic
+ jb %1,%5
%2:
-} if labelInRange
+} if labelInRange(), labelRefCountChange(%2 -1)
replace {
- ljmp %5
+ ljmp %5
%1:
} by {
- ; Peephole 132 changed ljmp to sjmp
- sjmp %5
+ ; Peephole 112.b changed ljmp to sjmp
+ sjmp %5
%1:
} if labelInRange
-
replace {
- clr a
- cjne %1,%2,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cpl a
%3:
- rrc a
- mov %4,c
+ rrc a
+ mov %4,c
} by {
- ; Peephole 113 optimized misc sequence
- clr %4
- cjne %1,%2,%3
- setb %4
+ ; Peephole 113.a optimized misc sequence
+ clr %4
+ cjne %1,%2,%3
+ setb %4
%3:
} if labelRefCount %3 1
replace {
- clr a
- cjne %1,%2,%3
- cjne %10,%11,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ cpl a
%3:
- rrc a
- mov %4,c
-} by {
- ; Peephole 114 optimized misc sequence
- clr %4
- cjne %1,%2,%3
- cjne %10,%11,%3
- setb %4
+ rrc a
+ mov %4,c
+} by {
+ ; Peephole 113.b optimized misc sequence
+ clr %4
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ setb %4
%3:
} if labelRefCount %3 2
replace {
- clr a
- cjne %1,%2,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cpl a
%3:
- jnz %4
+ jnz %4
} by {
- ; Peephole 115 jump optimization
- cjne %1,%2,%3
- sjmp %4
+ ; Peephole 115.a jump optimization (acc not set)
+ cjne %1,%2,%3
+ sjmp %4
%3:
} if labelRefCount %3 1
replace {
- clr a
- cjne %1,%2,%3
- cjne %9,%10,%3
- cpl a
+ mov %1,a
+ cjne %1,#0x00,%2
+ sjmp %3
+%2:
+} by {
+ mov %1,a
+ ; Peephole 115.b jump optimization
+ jz %3
+%2:
+} if labelRefCountChange(%2 -1)
+
+replace {
+ clr a
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ cpl a
%3:
- jnz %4
+ jnz %4
} by {
- ; Peephole 116 jump optimization
- cjne %1,%2,%3
- cjne %9,%10,%3
- sjmp %4
+ ; Peephole 115.c jump optimization (acc not set)
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ sjmp %4
%3:
} if labelRefCount %3 2
replace {
- clr a
- cjne %1,%2,%3
- cjne %9,%10,%3
- cjne %11,%12,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ cjne %11,%12,%3
+ cpl a
%3:
- jnz %4
+ jnz %4
} by {
- ; Peephole 117 jump optimization
- cjne %1,%2,%3
- cjne %9,%10,%3
- cjne %11,%12,%3
- sjmp %4
+ ; Peephole 115.d jump optimization (acc not set)
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ cjne %11,%12,%3
+ sjmp %4
%3:
} if labelRefCount %3 3
replace {
- clr a
- cjne %1,%2,%3
- cjne %9,%10,%3
- cjne %11,%12,%3
- cjne %13,%14,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ cjne %11,%12,%3
+ cjne %13,%14,%3
+ cpl a
%3:
- jnz %4
-} by {
- ; Peephole 118 jump optimization
- cjne %1,%2,%3
- cjne %9,%10,%3
- cjne %11,%12,%3
- cjne %13,%14,%3
- sjmp %4
+ jnz %4
+} by {
+ ; Peephole 115.e jump optimization (acc not set)
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ cjne %11,%12,%3
+ cjne %13,%14,%3
+ sjmp %4
%3:
} if labelRefCount %3 4
replace {
- mov a,#0x01
- cjne %1,%2,%3
- clr a
+ mov a,#0x01
+ cjne %1,%2,%3
+ clr a
%3:
- jnz %4
+ jnz %4
} by {
- ; Peephole 119 jump optimization
- cjne %1,%2,%4
+ ; Peephole 115.f jump optimization (acc not set)
+ cjne %1,%2,%4
%3:
-} if labelRefCount %3 1
+} if labelRefCount(%3 1), labelRefCountChange(%3 -1)
replace {
- mov a,#0x01
- cjne %1,%2,%3
- cjne %10,%11,%3
- clr a
+ mov a,#0x01
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ clr a
%3:
- jnz %4
+ jnz %4
} by {
- ; Peephole 120 jump optimization
- cjne %1,%2,%4
- cjne %10,%11,%4
+ ; Peephole 115.g jump optimization (acc not set)
+ cjne %1,%2,%4
+ cjne %10,%11,%4
%3:
-} if labelRefCount %3 2
+} if labelRefCount(%3 2), labelRefCountChange(%3 -2), labelRefCountChange(%4 1)
replace {
- mov a,#0x01
- cjne %1,%2,%3
- cjne %10,%11,%3
- cjne %12,%13,%3
- clr a
+ mov a,#0x01
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ cjne %12,%13,%3
+ clr a
%3:
- jnz %4
+ jnz %4
} by {
- ; Peephole 121 jump optimization
- cjne %1,%2,%4
- cjne %10,%11,%4
- cjne %12,%13,%4
+ ; Peephole 115.h jump optimization (acc not set)
+ cjne %1,%2,%4
+ cjne %10,%11,%4
+ cjne %12,%13,%4
%3:
-} if labelRefCount %3 3
+} if labelRefCount(%3 3), labelRefCountChange(%3 -3), labelRefCountChange(%4 2)
replace {
- mov a,#0x01
- cjne %1,%2,%3
- cjne %10,%11,%3
- cjne %12,%13,%3
- cjne %14,%15,%3
- clr a
+ mov a,#0x01
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ cjne %12,%13,%3
+ cjne %14,%15,%3
+ clr a
%3:
- jnz %4
+ jnz %4
} by {
- ; Peephole 122 jump optimization
- cjne %1,%2,%4
- cjne %10,%11,%4
- cjne %12,%13,%4
- cjne %14,%15,%4
+ ; Peephole 115.i jump optimization (acc not set)
+ cjne %1,%2,%4
+ cjne %10,%11,%4
+ cjne %12,%13,%4
+ cjne %14,%15,%4
%3:
-} if labelRefCount %3 4
+} if labelRefCount(%3 4), labelRefCountChange(%3 -4), labelRefCountChange(%4 3)
replace {
- mov a,#0x01
- cjne %1,%2,%3
- clr a
+ mov a,#0x01
+ cjne %1,%2,%3
+ clr a
%3:
- jz %4
+ jz %4
} by {
- ; Peephole 123 jump optimization
- cjne %1,%2,%3
- smp %4
+ ; Peephole 115.j jump optimization (acc not set)
+ cjne %1,%2,%3
+ sjmp %4
%3:
} if labelRefCount %3 1
replace {
- mov a,#0x01
- cjne %1,%2,%3
- cjne %10,%11,%3
- clr a
+ mov a,#0x01
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ clr a
%3:
- jz %4
+ jz %4
} by {
- ; Peephole 124 jump optimization
- cjne %1,%2,%3
- cjne %10,%11,%3
- sjmp %4
+ ; Peephole 115.k jump optimization (acc not set)
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ sjmp %4
%3:
} if labelRefCount %3 2
replace {
- mov a,#0x01
- cjne %1,%2,%3
- cjne %10,%11,%3
- cjne %12,%13,%3
- clr a
+ mov a,#0x01
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ cjne %12,%13,%3
+ clr a
%3:
- jz %4
+ jz %4
} by {
- ; Peephole 125 jump optimization
- cjne %1,%2,%3
- cjne %10,%11,%3
- cjne %12,%13,%3
- sjmp %4
+ ; Peephole 115.l jump optimization (acc not set)
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ cjne %12,%13,%3
+ sjmp %4
%3:
} if labelRefCount %3 3
replace {
- mov a,#0x01
- cjne %1,%2,%3
- cjne %10,%11,%3
- cjne %12,%13,%3
- cjne %14,%15,%3
- clr a
+ mov a,#0x01
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ cjne %12,%13,%3
+ cjne %14,%15,%3
+ clr a
%3:
- jz %4
-} by {
- ; Peephole 126 jump optimization
- cjne %1,%2,%3
- cjne %10,%11,%3
- cjne %12,%13,%3
- cjne %14,%15,%3
- sjmp %4
+ jz %4
+} by {
+ ; Peephole 115.m jump optimization (acc not set)
+ cjne %1,%2,%3
+ cjne %10,%11,%3
+ cjne %12,%13,%3
+ cjne %14,%15,%3
+ sjmp %4
%3:
} if labelRefCount %3 4
replace {
- push psw
- mov psw,%1
- push bp
- mov bp,%2
+ push psw
+ mov psw,%1
+ push _bp
+ mov _bp,%2
%3:
- mov %2,bp
- pop bp
- pop psw
- ret
+ mov %2,_bp
+ pop _bp
+ pop psw
+ ret
} by {
- ; Peephole 127 removed misc sequence
- ret
+ ; Peephole 127 removed misc sequence
+ ret
} if labelRefCount %3 0
replace {
- clr a
- rlc a
- jz %1
+ clr a
+ rlc a
+ jz %1
} by {
- ; Peephole 128 jump optimization
- jnc %1
+ ; Peephole 128 jump optimization
+ jnc %1
}
+// applies to: bug-524691.c --model-large: while (uRight - uLeft > 1)
replace {
- clr a
- rlc a
- jnz %1
+ clr a
+ rlc a
+ jnz %0
} by {
- ; Peephole 129 jump optimization
- jc %1
+ ; Peephole 129.a jump optimization
+ jc %0
}
-replace {
- mov r%1,@r%2
+// applies to: _fsdiv.c --xstack: if (mant1 < mant2)
+replace {
+ clr a
+ rlc a
+ pop %1
+ jnz %0
} by {
- ; Peephole 130 changed target address mode r%1 to ar%1
- mov ar%1,@r%2
-}
+ ; Peephole 129.b optimized condition
+ pop %1
+ jc %0
+} if notVolatile %1
-replace {
- mov a,%1
- subb a,#0x01
- mov %2,a
- mov %1,%2
+// applies to: time.c --xstack: while((days += (LEAP_YEAR(year) ? 366 : 365)) <= epoch)
+replace {
+ clr a
+ rlc a
+ pop %1
+ pop %2
+ jnz %0
} by {
- ; Peephole 131 optimized decrement (not caring for c)
- dec %1
- mov %2,%1
-}
+ ; Peephole 129.c optimized condition
+ pop %1
+ pop %2
+ jc %0
+} if notVolatile %1 %2
+// applies to: _memmove.c --xstack: if (((int)src < (int)dst) && ((((int)src)+acount) > (int)dst))
replace {
- mov r%1,%2
- mov ar%3,@r%1
- inc r%3
- mov r%4,%2
- mov @r%4,ar%3
+ clr a
+ rlc a
+ pop %1
+ pop %2
+ pop %3
+ jnz %0
} by {
- ; Peephole 133 removed redundant moves
- mov r%1,%2
- inc @r%1
- mov ar%3,@r%1
-}
+ ; Peephole 129.d optimized condition
+ pop %1
+ pop %2
+ pop %3
+ jc %0
+} if notVolatile %1 %2 %3
replace {
- mov r%1,%2
- mov ar%3,@r%1
- dec r%3
- mov r%4,%2
- mov @r%4,ar%3
+ mov r%1,@r%2
} by {
- ; Peephole 134 removed redundant moves
- mov r%1,%2
- dec @r%1
- mov ar%3,@r%1
+ ; Peephole 130 changed target address mode r%1 to ar%1
+ mov ar%1,@r%2
}
replace {
- mov r%1,a
- mov a,r%2
- orl a,r%1
+ mov a,%1
+ subb a,#0x01
+ mov %2,a
+ mov %1,%2
} by {
- ; Peephole 135 removed redundant mov
- mov r%1,a
- orl a,r%2
+ ; Peephole 131 optimized decrement (not caring for c)
+ dec %1
+ mov %2,%1
}
+// ideally the optimizations of rules 132.x should be done in genCmpXX
replace {
- mov %1,a
- mov dpl,%2
- mov dph,%3
- mov a,%1
+ clr c
+ mov a,#%1
+ subb a,%2
+ mov %3,c
} by {
- ; Peephole 136 removed redundant moves
- mov %1,a
- mov dpl,%2
- mov dph,%3
+ ; Peephole 132.a optimized genCmpGt by inverse logic (acc differs)
+ mov a,%2
+ add a,#0xff - %1
+ mov %3,c
+} if operandsLiteral(%1)
+
+replace {
+ clr c
+ mov a,#%1
+ subb a,%2
+ jnc %5
+} by {
+ ; Peephole 132.b optimized genCmpGt by inverse logic (acc differs)
+ mov a,%2
+ add a,#0xff - %1
+ jnc %5
+} if operandsLiteral(%1)
+
+replace {
+ clr c
+ mov a,#%1
+ subb a,%2
+ jc %5
+} by {
+ ; Peephole 132.c optimized genCmpGt by inverse logic (acc differs)
+ mov a,%2
+ add a,#0xff - %1
+ jc %5
+} if operandsLiteral(%1)
+
+// disabled. See bug1734654.c
+//replace {
+// clr c
+// mov a,%1
+// subb a,#%2
+// mov %3,c
+//} by {
+// ; Peephole 132.d optimized genCmpGt by inverse logic
+// mov a,#0x100 - %2
+// add a,%1
+// mov %3,c
+//} if operandsNotRelated('0x00' %2), operandsLiteral(%2)
+
+replace {
+ clr c
+ mov a,%1
+ subb a,#%2
+ jnc %5
+} by {
+ ; Peephole 132.e optimized genCmpLt by inverse logic (carry differs)
+ mov a,#0x100 - %2
+ add a,%1
+ jc %5
+} if operandsNotRelated('0x00' %2), operandsLiteral(%2)
+
+replace {
+ clr c
+ mov a,%1
+ subb a,#%2
+ jc %5
+} by {
+ ; Peephole 132.f optimized genCmpLt by inverse logic (carry differs)
+ mov a,#0x100 - %2
+ add a,%1
+ jnc %5
+} if operandsNotRelated('0x00' %2), operandsLiteral(%2)
+
+
+replace {
+ mov r%1,%2
+ mov ar%3,@r%1
+ inc r%3
+ mov r%4,%2
+ mov @r%4,ar%3
+} by {
+ mov r%1,%2
+ ; Peephole 133 removed redundant moves
+ inc @r%1
+ mov ar%3,@r%1
+} if notVolatile
+
+replace {
+ mov r%1,%2
+ mov ar%3,@r%1
+ dec r%3
+ mov r%4,%2
+ mov @r%4,ar%3
+} by {
+ mov r%1,%2
+ ; Peephole 134 removed redundant moves
+ dec @r%1
+ mov ar%3,@r%1
+} if notVolatile
+
+replace {
+ mov r%1,a
+ mov a,r%2
+ orl a,r%1
+} by {
+ mov r%1,a
+ ; Peephole 135 removed redundant mov
+ orl a,r%2
}
+replace {
+ mov %1,a
+ mov dpl,%2
+ mov dph,%3
+ mov a,%1
+} by {
+ mov %1,a
+ mov dpl,%2
+ mov dph,%3
+ ; Peephole 136 removed redundant mov
+} if notVolatile %1
+
// WTF? Doesn't look sensible to me...
//replace {
-// mov b,#0x00
-// mov a,%1
-// cjne %2,%3,%4
-// mov b,#0x01
+// mov b,#0x00
+// mov a,%1
+// cjne %2,%3,%4
+// mov b,#0x01
//%4:
-// mov a,b
-// jz %5
+// mov a,b
+// jz %5
//} by {
-// ; Peephole 137 optimized misc jump sequence
-// mov a,%1
-// cjne %2,%3,%5
+// ; Peephole 137 optimized misc jump sequence
+// mov a,%1
+// cjne %2,%3,%5
//%4:
//} if labelRefCount %4 1
//
//replace {
-// mov b,#0x00
-// mov a,%1
-// cjne %2,%3,%4
-// mov b,#0x01
+// mov b,#0x00
+// mov a,%1
+// cjne %2,%3,%4
+// mov b,#0x01
//%4:
-// mov a,b
-// jnz %5
+// mov a,b
+// jnz %5
//} by {
-// ; Peephole 138 optimized misc jump sequence
-// mov a,%1
-// cjne %2,%3,%4
-// sjmp %5
+// ; Peephole 138 optimized misc jump sequence
+// mov a,%1
+// cjne %2,%3,%4
+// sjmp %5
//%4:
//} if labelRefCount %4 1
replace {
- mov r%1,a
- anl ar%1,%2
- mov a,r%1
+ mov r%1,a
+ anl ar%1,%2
+ mov a,r%1
+} by {
+ ; Peephole 139.a removed redundant mov
+ anl a,%2
+ mov r%1,a
+}
+
+replace {
+ mov r%1,a
+ orl ar%1,%2
+ mov a,r%1
} by {
- ; Peephole 139 removed redundant mov
- anl a,%2
- mov r%1,a
+ ; Peephole 139.b removed redundant mov
+ orl a,%2
+ mov r%1,a
}
replace {
- mov r%1,a
- orl ar%1,%2
- mov a,r%1
+ mov r%1,a
+ xrl ar%1,%2
+ mov a,r%1
} by {
- ; Peephole 140 removed redundant mov
- orl a,%2
- mov r%1,a }
+ ; Peephole 139.c removed redundant mov
+ xrl a,%2
+ mov r%1,a
+}
+// applies to genlshOne
replace {
- mov r%1,a
- xrl ar%1,%2
- mov a,r%1
+ mov ar%1,@%2
+ mov a,r%1
+ add a,acc
+ mov r%1,a
} by {
- ; Peephole 141 removed redundant mov
- xrl a,%2
- mov r%1,a
+ ; Peephole 140 removed redundant mov
+ mov a,@%2
+ add a,@%2
+ mov r%1,a
}
replace {
- mov r%1,a
- mov r%2,ar%1
- mov ar%1,@r%2
+ mov r%1,a
+ mov r%2,ar%1
+ mov ar%1,@r%2
} by {
- ; Peephole 142 removed redundant moves
- mov r%2,a
- mov ar%1,@r%2
+ ; Peephole 142 removed redundant mov
+ mov r%2,a
+ mov ar%1,@r%2
}
replace {
- rlc a
- mov acc.0,c
+ rlc a
+ mov acc.0,c
} by {
- ; Peephole 143 converted rlc to rl
- rl a
+ ; Peephole 143.a converted rlc to rl
+ rl a
}
replace {
- rrc a
- mov acc.7,c
+ rrc a
+ mov acc.7,c
} by {
- ; Peephole 144 converted rrc to rc
- rr a
+ ; Peephole 143.b converted rrc to rc
+ rr a
}
replace {
- clr c
- addc a,%1
+ clr c
+ addc a,%1
} by {
- ; Peephole 145 changed to add without carry
- add a,%1
+ ; Peephole 145.a changed to add without carry
+ add a,%1
}
replace {
- clr c
- mov a,%1
- addc a,%2
+ clr c
+ mov a,%1
+ addc a,%2
} by {
- ; Peephole 146 changed to add without carry
- mov a,%1
- add a,%2
+ ; Peephole 145.b changed to add without carry
+ mov a,%1
+ add a,%2
}
+// 147: Fix compiler output to comply with 8051 instruction set.
replace {
- orl r%1,a
+ orl r%1,a
} by {
- ; Peephole 147 changed target address mode r%1 to ar%1
- orl ar%1,a
+ ; Peephole 147.a changed target address mode r%1 to ar%1
+ orl ar%1,a
}
replace {
- anl r%1,a
+ anl r%1,a
} by {
- ; Peephole 148 changed target address mode r%1 to ar%1
- anl ar%1,a
+ ; Peephole 147.b changed target address mode r%1 to ar%1
+ anl ar%1,a
}
replace {
- xrl r%1,a
+ xrl r%1,a
} by {
- ; Peephole 149 changed target address mode r%1 to ar%1
- xrl ar%1,a
+ ; Peephole 147.c changed target address mode r%1 to ar%1
+ xrl ar%1,a
}
replace {
- mov %1,dpl
- mov dpl,%1
+ mov r%1,dpl
+ mov dpl,r%1
%9:
- ret
+ ret
} by {
- ; Peephole 150 removed misc moves via dpl before return
+ ; Peephole 150.a removed misc moves via dpl before return
%9:
- ret
+ ret
}
replace {
- mov %1,dpl
- mov %2,dph
- mov dpl,%1
- mov dph,%2
+ mov r%1,dpl
+ mov r%2,dph
+ mov dpl,r%1
+ mov dph,r%2
%9:
- ret
+ ret
} by {
- ; Peephole 151 removed misc moves via dph, dpl before return
+ ; Peephole 150.b removed misc moves via dph, dpl before return
%9:
- ret
+ ret
}
replace {
- mov %1,dpl
- mov %2,dph
- mov dpl,%1
+ mov r%1,dpl
+ mov r%2,dph
+ mov dpl,r%1
%9:
- ret
+ ret
} by {
- ; Peephole 152 removed misc moves via dph, dpl before return
+ ; Peephole 150.c removed misc moves via dph, dpl before return
%9:
- ret
+ ret
}
replace {
- mov %1,dpl
- mov %2,dph
- mov %3,b
- mov dpl,%1
- mov dph,%2
- mov b,%3
+ mov r%1,dpl
+ mov r%2,dph
+ mov r%3,b
+ mov dpl,r%1
+ mov dph,r%2
+ mov b,r%3
%9:
- ret
+ ret
} by {
- ; Peephole 153 removed misc moves via dph, dpl, b before return
+ ; Peephole 150.d removed misc moves via dph, dpl, b before return
%9:
- ret
+ ret
}
replace {
- mov %1,dpl
- mov %2,dph
- mov %3,b
- mov dpl,%1
+ mov r%1,dpl
+ mov r%2,dph
+ mov r%3,b
+ mov dpl,r%1
%9:
- ret
+ ret
} by {
- ; Peephole 154 removed misc moves via dph, dpl, b before return
+ ; Peephole 150.e removed misc moves via dph, dpl, b before return
%9:
- ret
+ ret
}
replace {
- mov %1,dpl
- mov %2,dph
- mov %3,b
- mov dpl,%1
- mov dph,%2
+ mov r%1,dpl
+ mov r%2,dph
+ mov r%3,b
+ mov dpl,r%1
+ mov dph,r%2
%9:
- ret
+ ret
} by {
- ; Peephole 155 removed misc moves via dph, dpl, b before return
+ ; Peephole 150.f removed misc moves via dph, dpl, b before return
%9:
- ret
+ ret
}
replace {
- mov %1,dpl
- mov %2,dph
- mov %3,b
- mov %4,a
- mov dpl,%1
- mov dph,%2
- mov b,%3
- mov a,%4
+ mov r%1,dpl
+ mov r%2,dph
+ mov r%3,b
+ mov r%4,a
+ mov dpl,r%1
+ mov dph,r%2
+ mov b,r%3
+ mov a,r%4
%9:
- ret
+ ret
} by {
- ; Peephole 156 removed misc moves via dph, dpl, b, a before return
+ ; Peephole 150.g removed misc moves via dph, dpl, b, a before return
%9:
- ret
+ ret
}
replace {
- mov %1,dpl
- mov %2,dph
- mov %3,b
- mov %4,a
- mov dpl,%1
- mov dph,%2
+ mov r%1,dpl
+ mov r%2,dph
+ mov r%3,b
+ mov r%4,a
+ mov dpl,r%1
+ mov dph,r%2
%9:
- ret
+ ret
} by {
- ; Peephole 157 removed misc moves via dph, dpl, b, a before return
+ ; Peephole 150.h removed misc moves via dph, dpl, b, a before return
%9:
- ret
+ ret
}
replace {
- mov %1,dpl
- mov %2,dph
- mov %3,b
- mov %4,a
- mov dpl,%1
+ mov r%1,dpl
+ mov r%2,dph
+ mov r%3,b
+ mov r%4,a
+ mov dpl,r%1
%9:
- ret
+ ret
} by {
- ; Peephole 158 removed misc moves via dph, dpl, b, a before return
+ ; Peephole 150.i removed misc moves via dph, dpl, b, a before return
%9:
- ret
+ ret
}
+// peephole 213.a might revert this
replace {
- mov %1,#%2
- xrl %1,#0x80
+ mov %1,#%2
+ xrl %1,#0x80
} by {
- ; Peephole 159 avoided xrl during execution
- mov %1,#(%2 ^ 0x80)
+ ; Peephole 159 avoided xrl during execution
+ mov %1,#(%2 ^ 0x80)
}
replace {
- jnc %1
- sjmp %2
+ jnc %1
+ sjmp %2
%1:
} by {
- ; Peephole 160 removed sjmp by inverse jump logic
- jc %2
+ ; Peephole 160.a removed sjmp by inverse jump logic
+ jc %2
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- jc %1
- sjmp %2
+ jc %1
+ sjmp %2
%1:
} by {
- ; Peephole 161 removed sjmp by inverse jump logic
- jnc %2
+ ; Peephole 160.b removed sjmp by inverse jump logic
+ jnc %2
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- jnz %1
- sjmp %2
+ jnz %1
+ sjmp %2
%1:
} by {
- ; Peephole 162 removed sjmp by inverse jump logic
- jz %2
+ ; Peephole 160.c removed sjmp by inverse jump logic
+ jz %2
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- jz %1
- sjmp %2
+ jz %1
+ sjmp %2
%1:
} by {
- ; Peephole 163 removed sjmp by inverse jump logic
- jnz %2
+ ; Peephole 160.d removed sjmp by inverse jump logic
+ jnz %2
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- jnb %3,%1
- sjmp %2
+ jnb %3,%1
+ sjmp %2
%1:
} by {
- ; Peephole 164 removed sjmp by inverse jump logic
- jb %3,%2
+ ; Peephole 160.e removed sjmp by inverse jump logic
+ jb %3,%2
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- jb %3,%1
- sjmp %2
+ jb %3,%1
+ sjmp %2
%1:
} by {
- ; Peephole 165 removed sjmp by inverse jump logic
- jnb %3,%2
+ ; Peephole 160.f removed sjmp by inverse jump logic
+ jnb %3,%2
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- mov %1,%2
- mov %3,%1
- mov %2,%1
+ mov %1,%2
+ mov %3,%1
+ mov %2,%1
} by {
- ; Peephole 166 removed redundant mov
- mov %1,%2
- mov %3,%1
-}
+ mov %1,%2
+ mov %3,%1
+ ; Peephole 166 removed redundant mov
+} if notVolatile %1 %2
replace {
- mov c,%1
- cpl c
- mov %1,c
+ mov c,%1
+ cpl c
+ mov %1,c
} by {
- ; Peephole 167 removed redundant bit moves (c not set to %1)
- cpl %1
+ ; Peephole 167 removed redundant bit moves (c not set to %1)
+ cpl %1
}
replace {
- jnb %1,%2
- sjmp %3
+ jnb %1,%2
+ sjmp %3
%2:
} by {
- ; Peephole 168 jump optimization
- jb %1,%3
+ ; Peephole 168 jump optimization
+ jb %1,%3
%2:
-}
+} if labelRefCountChange(%2 -1)
replace {
- jb %1,%2
- sjmp %3
+ jb %1,%2
+ sjmp %3
%2:
} by {
- ; Peephole 169 jump optimization
- jnb %1,%3
+ ; Peephole 169 jump optimization
+ jnb %1,%3
%2:
-}
+} if labelRefCountChange(%2 -1)
replace {
- clr a
- cjne %1,%2,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cpl a
%3:
- jz %4
+ jz %4
} by {
- ; Peephole 170 jump optimization
- cjne %1,%2,%4
+ ; Peephole 170 jump optimization
+ cjne %1,%2,%4
%3:
-} if labelRefCount %3 1
+} if labelRefCount(%3 1), labelRefCountChange(%3 -1)
replace {
- clr a
- cjne %1,%2,%3
- cjne %9,%10,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ cpl a
%3:
- jz %4
+ jz %4
} by {
- ; Peephole 171 jump optimization
- cjne %1,%2,%4
- cjne %9,%10,%4
+ ; Peephole 171 jump optimization
+ cjne %1,%2,%4
+ cjne %9,%10,%4
%3:
-} if labelRefCount %3 2
+} if labelRefCount(%3 2), labelRefCountChange(%3 -2), labelRefCountChange(%4 1)
replace {
- clr a
- cjne %1,%2,%3
- cjne %9,%10,%3
- cjne %11,%12,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ cjne %11,%12,%3
+ cpl a
%3:
- jz %4
+ jz %4
} by {
- ; Peephole 172 jump optimization
- cjne %1,%2,%4
- cjne %9,%10,%4
- cjne %11,%12,%4
+ ; Peephole 172 jump optimization
+ cjne %1,%2,%4
+ cjne %9,%10,%4
+ cjne %11,%12,%4
%3:
-} if labelRefCount %3 3
+} if labelRefCount(%3 3), labelRefCountChange(%3 -3), labelRefCountChange(%4 2)
replace {
- clr a
- cjne %1,%2,%3
- cjne %9,%10,%3
- cjne %11,%12,%3
- cjne %13,%14,%3
- cpl a
+ clr a
+ cjne %1,%2,%3
+ cjne %9,%10,%3
+ cjne %11,%12,%3
+ cjne %13,%14,%3
+ cpl a
%3:
- jz %4
+ jz %4
} by {
- ; Peephole 173 jump optimization
- cjne %1,%2,%4
- cjne %9,%10,%4
- cjne %11,%12,%4
- cjne %13,%14,%4
+ ; Peephole 173 jump optimization
+ cjne %1,%2,%4
+ cjne %9,%10,%4
+ cjne %11,%12,%4
+ cjne %13,%14,%4
%3:
-} if labelRefCount %3 4
+} if labelRefCount(%3 4), labelRefCountChange(%3 -4), labelRefCountChange(%4 3)
replace {
- mov r%1,%2
- clr c
- mov a,r%1
- subb a,#0x01
- mov %2,a
+ mov r%1,%2
+ clr c
+ mov a,r%1
+ subb a,#0x01
+ mov %2,a
} by {
- ; Peephole 174 optimized decrement (acc not set to %2, flags undefined)
- mov r%1,%2
- dec %2
+ mov r%1,%2
+ ; Peephole 174.a optimized decrement (acc not set to %2, flags undefined)
+ dec %2
}
replace {
- mov r%1,%2
- mov a,r%1
- add a,#0x01
- mov %2,a
+ mov r%1,%2
+ mov a,r%1
+ add a,#0x01
+ mov %2,a
} by {
- ; Peephole 175 optimized increment (acc not set to %2, flags undefined)
- mov r%1,%2
- inc %2
+ mov r%1,%2
+ ; Peephole 174.b optimized increment (acc not set to %2, flags undefined)
+ inc %2
}
replace {
- mov %1,@r%2
- inc %1
- mov @r%2,%1
+ mov %1,@r%2
+ inc %1
+ mov @r%2,%1
} by {
- ; Peephole 176 optimized increment, removed redundant mov
- inc @r%2
- mov %1,@r%2
-}
+ ; Peephole 174.c optimized increment, removed redundant mov
+ inc @r%2
+ mov %1,@r%2
+} if notVolatile
// this one will screw assignes to volatile/sfr's
-//replace {
-// mov %1,%2
-// mov %2,%1
-//} by {
-// ; Peephole 177 removed redundant mov
-// mov %1,%2
-//}
+replace {
+ mov %1,%2
+ mov %2,%1
+} by {
+ mov %1,%2
+ ; Peephole 177.a removed redundant mov
+} if notVolatile %1 %2
+
+// applies to f.e. scott-add.asm (--model-large)
+replace {
+ mov r%1,a
+ mov a,ar%1
+} by {
+ mov r%1,a
+ ; Peephole 177.b removed redundant mov
+}
+
+// applies to f.e. bug-408972.c
+replace {
+ mov %1,%2
+ mov %1,%3
+} by {
+ ; Peephole 177.c removed redundant mov
+ mov %1,%3
+} if notVolatile(%1 %2),operandsNotRelated(%1 %3)
+
+// applies to f.e. bug-408972.c
+// not before peephole 177.c
+replace restart {
+ mov %1,%2
+ mov %3,%4
+ mov %2,%1
+} by {
+ mov %1,%2
+ mov %3,%4
+ ; Peephole 177.d removed redundant mov
+} if notVolatile(%1 %2),operandsNotRelated(%1 %2 %3)
+
+// applies to f.e. bug-607243.c
+replace {
+ mov %1,%2
+ mov a%1,%3
+} by {
+ ; peephole 177.e removed redundant mov %1,%2
+ mov a%1,%3
+} if notVolatile(%2), operandsNotRelated(%1 %3)
+
+replace {
+ mov ar%1,%2
+ mov r%1,%3
+} by {
+ ; peephole 177.f removed redundant mov
+ mov r%1,%3
+} if notVolatile %2
+
+replace {
+ mov %1,%2
+ mov a,%1
+} by {
+ ; peephole 177.g optimized mov sequence
+ mov a,%2
+ mov %1,a
+} if notVolatile %1
+
+replace {
+ mov %1,%2
+ mov a,%2
+} by {
+ ; peephole 177.h optimized mov sequence
+ mov a,%2
+ mov %1,a
+} if notVolatile %2
+
+// applies to f.e. testfwk.c
+replace {
+ mov r%1,a
+ mov ar%2,r%1
+} by {
+ mov r%1,a
+ ; peephole 177.i optimized mov sequence
+ mov r%2,a
+}
+
+replace {
+ mov r%1,%2
+ mov ar%3,r%1
+ mov r%1,%4
+} by {
+ ; peephole 177.j optimized mov sequence
+ mov r%3,%2
+ mov r%1,%4
+}
replace {
- mov a,%1
- mov b,a
- mov a,%2
+ mov a,%1
+ mov b,a
+ mov a,%2
} by {
- ; Peephole 178 removed redundant mov
- mov b,%1
- mov a,%2
+ ; Peephole 178 removed redundant mov
+ mov b,%1
+ mov a,%2
}
// rules 179-182 provided by : Frieder <fe@lake.iup.uni-heidelberg.de>
// saving 2 byte, 1 cycle
replace {
- mov b,#0x00
- mov a,#0x00
+ mov b,#0x00
+ mov a,#0x00
} by {
- ; Peephole 179 changed mov to clr
- clr a
- mov b,a
+ ; Peephole 179 changed mov to clr
+ clr a
+ mov b,a
}
-// saving 1 byte, 0 cycles
+// applies to:
+// volatile xdata char t; t=0x01; t=0x03;
replace {
- mov a,#0x00
+ mov dptr,%1
+ mov a,%2
+ movx @dptr,a
+ mov dptr,%1
} by {
- ; Peephole 180 changed mov to clr
- clr a
+ mov dptr,%1
+ mov a,%2
+ movx @dptr,a
+ ; Peephole 180.a removed redundant mov to dptr
}
-// saving 3 byte, 2 cycles, return(NULL) profits here
+// volatile xdata char t; t=0x01; t=0x03; t=0x01;
+replace {
+ mov dptr,%1
+ mov a,%2
+ movx @dptr,a
+ mov a,%3
+ movx @dptr,a
+ mov dptr,%1
+} by {
+ mov dptr,%1
+ mov a,%2
+ movx @dptr,a
+ mov a,%3
+ movx @dptr,a
+ ; Peephole 180.b removed redundant mov to dptr
+}
+
+// saving 1 byte, 0 cycles
replace {
- mov dpl,#0x00
- mov dph,#0x00
+ mov a,#0x00
} by {
- ; Peephole 181 used 16 bit load of dptr
- mov dptr,#0x0000
+ ; Peephole 181 changed mov to clr
+ clr a
}
// saving 3 bytes, 2 cycles
// provided by Bernhard Held <bernhard.held@de.westinghouse.com>
replace {
- mov dpl,#%1
- mov dph,#(%1 >> 8)
+ mov dpl,#%1
+ mov dph,#(%1 >> 8)
+} by {
+ ; Peephole 182.a used 16 bit load of DPTR
+ mov dptr,#%1
+}
+
+// saving 3 byte, 2 cycles, return(NULL) profits here
+replace {
+ mov dpl,#0x%1
+ mov dph,#0x%2
} by {
- ; Peephole 182.a used 16 bit load of DPTR
- mov dptr,#%1
+ ; Peephole 182.b used 16 bit load of dptr
+ mov dptr,#0x%2%1
}
-
-// saving 3 byte, 2 cycles, return(float_constant) profits here
+
+// saving 3 byte, 2 cycles. Probably obsoleted by 182.b
replace {
- mov dpl,#%1
- mov dph,#%2
+ mov dpl,#%1
+ mov dph,#%2
} by {
- ; Peephole 182 used 16 bit load of dptr
- mov dptr,#(((%2)<<8) + %1)
+ ; Peephole 182.c used 16 bit load of dptr
+ mov dptr,#(((%2)<<8) + %1)
}
+// applies to return 0.0; in f.e. sincosf.c
replace {
- anl %1,#%2
- anl %1,#%3
-} by {
- ; Peephole 183 avoided anl during execution
- anl %1,#(%2 & %3)
-}
-
-replace {
- mov %1,a
- cpl a
- mov %1,a
-} by {
- ; Peephole 184 removed redundant mov
- cpl a
- mov %1,a
+ mov dpl,#%1
+ clr a
+ mov dph,a
+} by {
+ ; Peephole 182.d used 16 bit load of dptr
+ mov dptr,#(%1&0x00ff)
+ clr a
}
-replace {
-// acc being incremented might cause problems
- mov %1,a
- inc %1
-} by {
- ; Peephole 185 changed order of increment (acc incremented also!)
- inc a
- mov %1,a
-}
+replace {
+ anl %1,#%2
+ anl %1,#%3
+} by {
+ ; Peephole 183 avoided anl during execution
+ anl %1,#(%2&%3)
+}
replace {
- add a,#%1
- mov dpl,a
- clr a
- addc a,#(%1 >> 8)
- mov dph,a
- clr a
- movc a,@a+dptr
- mov %2,a
- inc dptr
- clr a
- movc a,@a+dptr
- mov %3,a
- inc dptr
- clr a
- movc a,@a+dptr
- mov %4,a
- inc dptr
- clr a
+ mov %1,a
+ cpl a
+ mov %1,a
} by {
- ; Peephole 186.a optimized movc sequence
- mov dptr,#%1
- mov b,acc
- movc a,@a+dptr
- mov %2,a
- mov acc,b
- inc dptr
- movc a,@a+dptr
- mov %3,a
- mov acc,b
- inc dptr
- mov %4,a
- mov acc,b
- inc dptr
+ ; Peephole 184 removed redundant mov
+ cpl a
+ mov %1,a
+} if notVolatile %1
+
+//replace {
+// acc being incremented might cause problems with register tracking
+// mov %1,a
+// inc %1
+//} by {
+// ; Peephole 185 changed order of increment (acc incremented also!)
+// inc a
+// mov %1,a
+//} if notVolatile %1
+
+// char indexed access to: long code table[] = {4,3,2,1};
+replace restart {
+ add a,#%1
+ mov dpl,a
+ clr a
+ addc a,#(%1 >> 8)
+ mov dph,a
+ clr a
+ movc a,@a+dptr
+ mov %2,a
+ inc dptr
+ clr a
+ movc a,@a+dptr
+ mov %3,a
+ inc dptr
+ clr a
+ movc a,@a+dptr
+ mov %4,a
+ inc dptr
+ clr a
+ movc a,@a+dptr
+} by {
+ ; Peephole 186.a optimized movc sequence
+ mov b,a
+ mov dptr,#%1
+ movc a,@a+dptr
+ mov %2,a
+ inc dptr
+ mov a,b
+ movc a,@a+dptr
+ mov %3,a
+ inc dptr
+ mov a,b
+ movc a,@a+dptr
+ mov %4,a
+ inc dptr
+ mov a,b
+ movc a,@a+dptr
+}
+
+// char indexed access to: void* code table[] = {4,3,2,1};
+replace restart {
+ add a,#%1
+ mov dpl,a
+ clr a
+ addc a,#(%1 >> 8)
+ mov dph,a
+ clr a
+ movc a,@a+dptr
+ mov %2,a
+ inc dptr
+ clr a
+ movc a,@a+dptr
+ mov %3,a
+ inc dptr
+ clr a
+ movc a,@a+dptr
+} by {
+ ; Peephole 186.b optimized movc sequence
+ mov b,a
+ mov dptr,#%1
+ movc a,@a+dptr
+ mov %2,a
+ inc dptr
+ mov a,b
+ movc a,@a+dptr
+ mov %3,a
+ inc dptr
+ mov a,b
+ movc a,@a+dptr
+}
+
+// char indexed access to: int code table[] = {4,3,2,1};
+replace restart {
+ add a,#%1
+ mov dpl,a
+ clr a
+ addc a,#(%1 >> 8)
+ mov dph,a
+ clr a
+ movc a,@a+dptr
+ mov %2,a
+ inc dptr
+ clr a
+ movc a,@a+dptr
+} by {
+ ; Peephole 186.c optimized movc sequence
+ mov %2,a
+ mov dptr,#%1
+ movc a,@a+dptr
+ xch a,%2
+ inc dptr
+ movc a,@a+dptr
}
+// char indexed access to: char code table[] = {4,3,2,1};
replace {
- add a,#%1
- mov dpl,a
- clr a
- addc a,#(%1 >> 8)
- mov dph,a
- clr a
- movc a,@a+dptr
- mov %2,a
- inc dptr
- clr a
- movc a,@a+dptr
- mov %3,a
- inc dptr
- clr a
+ add a,#%1
+ mov dpl,a
+ clr a
+ addc a,#(%1 >> 8)
+ mov dph,a
+ clr a
+ movc a,@a+dptr
} by {
- ; Peephole 186.b optimized movc sequence
- mov dptr,#%1
- mov b,acc
- movc a,@a+dptr
- mov %2,a
- mov acc,b
- inc dptr
- movc a,@a+dptr
- mov %3,a
- mov acc,b
- inc dptr
+ ; Peephole 186.d optimized movc sequence
+ mov dptr,#%1
+ movc a,@a+dptr
+}
+
+// char indexed access to: int code table[] = {4,3,2,1};
+replace {
+ mov b,#0x02
+ mul ab
+ add a,#%2
+ mov dpl,a
+ mov a,#(%2 >> 8)
+ addc a,b
+ mov dph,a
+ clr a
+ movc a,@a+dptr
+ mov %3,a
+ mov a,#0x01
+ movc a,@a+dptr
+} by {
+ ; Peephole 186.e optimized movc sequence (b, dptr differ)
+ add a,acc
+ mov b,a
+ mov dptr,#%2
+ jnc .+3
+ inc dph
+ movc a,@a+dptr
+ mov %3,a
+ mov a,b
+ inc a
+ movc a,@a+dptr
}
replace {
- add a,#%1
- mov dpl,a
- clr a
- addc a,#(%1 >> 8)
- mov dph,a
- clr a
- movc a,@a+dptr
- mov %2,a
- inc dptr
- clr a
-} by {
- ; Peephole 186.c optimized movc sequence
- mov dptr,#%1
- mov b,acc
- movc a,@a+dptr
- mov %2,a
- mov acc,b
- inc dptr
-}
-
-replace {
- add a,#%1
- mov dpl,a
- clr a
- addc a,#(%1 >> 8)
- mov dph,a
- clr a
- movc a,@a+dptr
-} by {
- ; Peephole 186.d optimized movc sequence
- mov dptr,#%1
- movc a,@a+dptr
-}
-
-replace {
- mov r%1,%2
- anl ar%1,#%3
- mov a,r%1
-} by {
- ; Peephole 187 used a instead of ar%1 for anl
- mov a,%2
- anl a,#%3
- mov r%1,a
-}
-
-replace {
- mov %1,a
- mov dptr,%2
- movc a,@a+dptr
- mov %1,a
-} by {
- ; Peephole 188 removed redundant mov
- mov dptr,%2
- movc a,@a+dptr
- mov %1,a
-}
-
-replace {
- anl a,#0x0f
- mov %1,a
- mov a,#0x0f
- anl a,%1
+ mov r%1,%2
+ anl ar%1,#%3
+ mov a,r%1
} by {
- ; Peephole 189 removed redundant mov and anl
- anl a,#0x0f
- mov %1,a
+ ; Peephole 187 used a instead of ar%1 for anl
+ mov a,%2
+ anl a,#%3
+ mov r%1,a
}
+replace {
+ mov %1,a
+ mov dptr,%2
+ movc a,@a+dptr
+ mov %1,a
+} by {
+ ; Peephole 188 removed redundant mov
+ mov dptr,%2
+ movc a,@a+dptr
+ mov %1,a
+} if notVolatile %1
+
+replace {
+ anl a,#0x0f
+ mov %1,a
+ mov a,#0x0f
+ anl a,%1
+} by {
+ anl a,#0x0f
+ mov %1,a
+ ; Peephole 189 removed redundant mov and anl
+} if notVolatile %1
+
// rules 190 & 191 need to be in order
replace {
- mov a,%1
- lcall __gptrput
- mov a,%1
+ mov a,%1
+ lcall __gptrput
+ mov a,%1
} by {
- ; Peephole 190 removed redundant mov
- mov a,%1
- lcall __gptrput
-}
+ mov a,%1
+ lcall __gptrput
+ ; Peephole 190 removed redundant mov
+} if notVolatile %1
+
+replace {
+ mov %1,a
+ mov dpl,%2
+ mov dph,%3
+ mov b,%4
+ mov a,%1
+} by {
+ mov %1,a
+ mov dpl,%2
+ mov dph,%3
+ mov b,%4
+ ; Peephole 191 removed redundant mov
+} if notVolatile %1
+// applies to f.e. regression/ports/mcs51/support.c
replace {
- mov %1,a
- mov dpl,%2
- mov dph,%3
- mov b,%4
- mov a,%1
+ mov r%1,a
+ mov @r%2,ar%1
} by {
- ; Peephole 191 removed redundant mov
- mov %1,a
- mov dpl,%2
- mov dph,%3
- mov b,%4
+ mov r%1,a
+ ; Peephole 192.a used a instead of ar%1 as source
+ mov @r%2,a
}
+// applies to f.e. printf_large.c
replace {
- mov r%1,a
- mov @r%2,ar%1
+ mov ar%1,@r%2
+ mov a,r%1
} by {
- ; Peephole 192 used a instead of ar%1 as source
- mov r%1,a
- mov @r%2,a
+ ; Peephole 192.b used a instead of ar%1 as destination
+ mov a,@r%2
+ mov r%1,a
}
replace {
- jnz %3
- mov a,%4
- jnz %3
- mov a,%9
- jnz %3
- mov a,%12
- cjne %13,%14,%3
- sjmp %7
+ jnz %3
+ mov a,%4
+ jnz %3
+ mov a,%9
+ jnz %3
+ mov a,%12
+ cjne %13,%14,%3
+ sjmp %7
%3:
- sjmp %8
-} by {
- ; Peephole 193.a optimized misc jump sequence
- jnz %8
- mov a,%4
- jnz %8
- mov a,%9
- jnz %8
- mov a,%12
- cjne %13,%14,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 4
+ sjmp %8
+} by {
+ ; Peephole 193.a optimized misc jump sequence
+ jnz %8
+ mov a,%4
+ jnz %8
+ mov a,%9
+ jnz %8
+ mov a,%12
+ cjne %13,%14,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 4), labelRefCountChange(%3 -4), labelRefCountChange(%8 3)
replace {
- cjne %1,%2,%3
- mov a,%4
- cjne %5,%6,%3
- mov a,%9
- cjne %10,%11,%3
- mov a,%12
- cjne %13,%14,%3
- sjmp %7
-%3:
- sjmp %8
-} by {
- ; Peephole 193 optimized misc jump sequence
- cjne %1,%2,%8
- mov a,%4
- cjne %5,%6,%8
- mov a,%9
- cjne %10,%11,%8
- mov a,%12
- cjne %13,%14,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 4
+ cjne %1,%2,%3
+ mov a,%4
+ cjne %5,%6,%3
+ mov a,%9
+ cjne %10,%11,%3
+ mov a,%12
+ cjne %13,%14,%3
+ sjmp %7
+%3:
+ sjmp %8
+} by {
+ ; Peephole 193.b optimized misc jump sequence
+ cjne %1,%2,%8
+ mov a,%4
+ cjne %5,%6,%8
+ mov a,%9
+ cjne %10,%11,%8
+ mov a,%12
+ cjne %13,%14,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 4), labelRefCountChange(%3 -4), labelRefCountChange(%8 3)
replace {
- cjne @%1,%2,%3
- inc %1
- cjne @%1,%6,%3
- inc %1
- cjne @%1,%11,%3
- inc %1
- cjne @%1,%14,%3
- sjmp %7
-%3:
- sjmp %8
-} by {
- ; Peephole 193.a optimized misc jump sequence
- cjne @%1,%2,%8
- inc %1
- cjne @%1,%6,%8
- inc %1
- cjne @%1,%11,%8
- inc %1
- cjne @%1,%14,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 4
+ cjne @%1,%2,%3
+ inc %1
+ cjne @%1,%6,%3
+ inc %1
+ cjne @%1,%11,%3
+ inc %1
+ cjne @%1,%14,%3
+ sjmp %7
+%3:
+ sjmp %8
+} by {
+ ; Peephole 193.c optimized misc jump sequence
+ cjne @%1,%2,%8
+ inc %1
+ cjne @%1,%6,%8
+ inc %1
+ cjne @%1,%11,%8
+ inc %1
+ cjne @%1,%14,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 4), labelRefCountChange(%3 -4), labelRefCountChange(%8 3)
replace {
- cjne %1,%2,%3
- cjne %5,%6,%3
- cjne %10,%11,%3
- cjne %13,%14,%3
- sjmp %7
+ cjne %1,%2,%3
+ cjne %5,%6,%3
+ cjne %10,%11,%3
+ cjne %13,%14,%3
+ sjmp %7
%3:
- sjmp %8
-} by {
- ; Peephole 194 optimized misc jump sequence
- cjne %1,%2,%8
- cjne %5,%6,%8
- cjne %10,%11,%8
- cjne %13,%14,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 4
+ sjmp %8
+} by {
+ ; Peephole 194 optimized misc jump sequence
+ cjne %1,%2,%8
+ cjne %5,%6,%8
+ cjne %10,%11,%8
+ cjne %13,%14,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 4), labelRefCountChange(%3 -4), labelRefCountChange(%8 3)
replace {
- jnz %3
- mov a,%4
- jnz %3
- mov a,%9
- cjne %10,%11,%3
- sjmp %7
+ jnz %3
+ mov a,%4
+ jnz %3
+ mov a,%9
+ cjne %10,%11,%3
+ sjmp %7
%3:
- sjmp %8
-} by {
- ; Peephole 195.a optimized misc jump sequence
- jnz %8
- mov a,%4
- jnz %8
- mov a,%9
- cjne %10,%11,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 3
+ sjmp %8
+} by {
+ ; Peephole 195.a optimized misc jump sequence
+ jnz %8
+ mov a,%4
+ jnz %8
+ mov a,%9
+ cjne %10,%11,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 3), labelRefCountChange(%3 -3), labelRefCountChange(%8 2)
replace {
- cjne %1,%2,%3
- mov a,%4
- cjne %5,%6,%3
- mov a,%9
- cjne %10,%11,%3
- sjmp %7
+ cjne %1,%2,%3
+ mov a,%4
+ cjne %5,%6,%3
+ mov a,%9
+ cjne %10,%11,%3
+ sjmp %7
%3:
- sjmp %8
-} by {
- ; Peephole 195.b optimized misc jump sequence
- cjne %1,%2,%8
- mov a,%4
- cjne %5,%6,%8
- mov a,%9
- cjne %10,%11,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 3
+ sjmp %8
+} by {
+ ; Peephole 195.b optimized misc jump sequence
+ cjne %1,%2,%8
+ mov a,%4
+ cjne %5,%6,%8
+ mov a,%9
+ cjne %10,%11,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 3), labelRefCountChange(%3 -3), labelRefCountChange(%8 2)
replace {
- cjne @%1,%2,%3
- inc %1
- cjne @%1,%6,%3
- inc %1
- cjne @%1,%11,%3
- sjmp %7
+ cjne @%1,%2,%3
+ inc %1
+ cjne @%1,%6,%3
+ inc %1
+ cjne @%1,%11,%3
+ sjmp %7
%3:
- sjmp %8
-} by {
- ; Peephole 195.c optimized misc jump sequence
- cjne @%1,%2,%8
- inc %1
- cjne @%1,%6,%8
- inc %1
- cjne @%1,%11,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 3
+ sjmp %8
+} by {
+ ; Peephole 195.c optimized misc jump sequence
+ cjne @%1,%2,%8
+ inc %1
+ cjne @%1,%6,%8
+ inc %1
+ cjne @%1,%11,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 3), labelRefCountChange(%3 -3), labelRefCountChange(%8 2)
replace {
- cjne %1,%2,%3
- cjne %5,%6,%3
- cjne %10,%11,%3
- sjmp %7
+ cjne %1,%2,%3
+ cjne %5,%6,%3
+ cjne %10,%11,%3
+ sjmp %7
%3:
- sjmp %8
+ sjmp %8
} by {
- ; Peephole 196 optimized misc jump sequence
- cjne %1,%2,%8
- cjne %5,%6,%8
- cjne %10,%11,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 3
+ ; Peephole 196 optimized misc jump sequence
+ cjne %1,%2,%8
+ cjne %5,%6,%8
+ cjne %10,%11,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 3), labelRefCountChange(%3 -3), labelRefCountChange(%8 2)
replace {
- jnz %3
- mov a,%4
- cjne %5,%6,%3
- sjmp %7
+ jnz %3
+ mov a,%4
+ cjne %5,%6,%3
+ sjmp %7
%3:
- sjmp %8
+ sjmp %8
} by {
- ; Peephole 197.a optimized misc jump sequence
- jnz %8
- mov a,%4
- cjne %5,%6,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 2
+ ; Peephole 197.a optimized misc jump sequence
+ jnz %8
+ mov a,%4
+ cjne %5,%6,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 2), labelRefCountChange(%3 -2), labelRefCountChange(%8 1)
replace {
- cjne %1,%2,%3
- mov a,%4
- cjne %5,%6,%3
- sjmp %7
+ cjne %1,%2,%3
+ mov a,%4
+ cjne %5,%6,%3
+ sjmp %7
%3:
- sjmp %8
+ sjmp %8
} by {
- ; Peephole 197.b optimized misc jump sequence
- cjne %1,%2,%8
- mov a,%4
- cjne %5,%6,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 2
+ ; Peephole 197.b optimized misc jump sequence
+ cjne %1,%2,%8
+ mov a,%4
+ cjne %5,%6,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 2), labelRefCountChange(%3 -2), labelRefCountChange(%8 1)
replace {
- cjne @%1,%2,%3
- inc %1
- cjne @%1,%6,%3
- sjmp %7
+ cjne @%1,%2,%3
+ inc %1
+ cjne @%1,%6,%3
+ sjmp %7
%3:
- sjmp %8
+ sjmp %8
} by {
- ; Peephole 197.c optimized misc jump sequence
- cjne @%1,%2,%8
- inc %1
- cjne @%1,%6,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 2
+ ; Peephole 197.c optimized misc jump sequence
+ cjne @%1,%2,%8
+ inc %1
+ cjne @%1,%6,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 2), labelRefCountChange(%3 -2), labelRefCountChange(%8 1)
replace {
- cjne %1,%2,%3
- cjne %5,%6,%3
- sjmp %7
+ cjne %1,%2,%3
+ cjne %5,%6,%3
+ sjmp %7
%3:
- sjmp %8
+ sjmp %8
} by {
- ; Peephole 198 optimized misc jump sequence
- cjne %1,%2,%8
- cjne %5,%6,%8
- sjmp %7
-;%3:
-} if labelRefCount %3 2
+ ; Peephole 198.a optimized misc jump sequence
+ cjne %1,%2,%8
+ cjne %5,%6,%8
+ sjmp %7
+%3:
+} if labelInRange(%8), labelRefCount(%3 2), labelRefCountChange(%3 -2), labelRefCountChange(%8 1)
replace {
- cjne %1,%2,%3
- sjmp %4
+ cjne %1,%2,%3
+ sjmp %4
%3:
- sjmp %5
+ sjmp %5
} by {
- ; Peephole 199 optimized misc jump sequence
- cjne %1,%2,%5
- sjmp %4
-;%3:
-} if labelRefCount %3 1
+ ; Peephole 198.b optimized misc jump sequence
+ cjne %1,%2,%5
+ sjmp %4
+%3:
+} if labelInRange(%5), labelRefCount(%3 1), labelRefCountChange(%3 -1)
replace {
- sjmp %1
+ sjmp %1
%1:
} by {
- ; Peephole 200 removed redundant sjmp
+ ; Peephole 200.a removed redundant sjmp
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- sjmp %1
+ sjmp %1
%2:
%1:
} by {
- ; Peephole 201 removed redundant sjmp
+ ; Peephole 200.b removed redundant sjmp
%2:
%1:
-}
+} if labelRefCountChange(%1 -1)
replace {
- push acc
- mov dptr,%1
- pop acc
+ push acc
+ mov dptr,%1
+ pop acc
} by {
- ; Peephole 202 removed redundant push pop
- mov dptr,%1
+ ; Peephole 202 removed redundant push pop
+ mov dptr,%1
}
replace {
- mov r%1,_spx
- lcall %2
- mov r%1,_spx
+ mov r%1,_spx
+ lcall %2
+ mov r%1,_spx
} by {
- ; Peephole 203 removed mov r%1,_spx
- lcall %2
+ ; Peephole 203 removed mov r%1,_spx
+ lcall %2
}
replace {
- mov %1,a
- add a,acc
- mov %1,a
+ mov %1,a
+ add a,acc
+ mov %1,a
} by {
- ; Peephole 204 removed redundant mov
- add a,acc
- mov %1,a
-}
+ ; Peephole 204 removed redundant mov
+ add a,acc
+ mov %1,a
+} if notVolatile %1
replace {
- djnz %1,%2
- sjmp %3
+ djnz %1,%2
+ sjmp %3
%2:
- sjmp %4
+ sjmp %4
%3:
} by {
- ; Peephole 205 optimized misc jump sequence
- djnz %1,%4
+ ; Peephole 205 optimized misc jump sequence
+ djnz %1,%4
%2:
%3:
-} if labelRefCount %2 1
+} if labelRefCount(%2 1), labelRefCountChange(%2 -1), labelRefCountChange(%3 -1)
replace {
- mov %1,%1
+ mov %1,%1
} by {
- ; Peephole 206 removed redundant mov %1,%1
-}
+ ; Peephole 206 removed redundant mov %1,%1
+} if notVolatile %1
-replace {
- mov a,_bp
- add a,#0x00
- mov %1,a
-} by {
- ; Peephole 207 removed zero add (acc not set to %1, flags undefined)
- mov %1,_bp
-}
+// Does not seem to be triggered anymore
+//replace {
+// mov a,_bp
+// add a,#0x00
+// mov %1,a
+//} by {
+// ; Peephole 207 removed zero add (acc not set to %1, flags undefined)
+// mov %1,_bp
+//}
replace {
- push acc
- mov r%1,_bp
- pop acc
+ push acc
+ mov r%1,_bp
+ pop acc
} by {
- ; Peephole 208 removed redundant push pop
- mov r%1,_bp
+ ; Peephole 208 removed redundant push pop
+ mov r%1,_bp
}
+// Does not seem to be triggered anymore
+//replace {
+// mov a,_bp
+// add a,#0x00
+// inc a
+// mov %1,a
+//} by {
+// ; Peephole 209 optimized increment (acc not set to %1, flags undefined)
+// mov %1,_bp
+// inc %1
+//}
+
replace {
- mov a,_bp
- add a,#0x00
- inc a
- mov %1,a
+ mov dptr,#((((%1 >> 8)) <<8) + %1)
} by {
- ; Peephole 209 optimized increment (acc not set to %1, flags undefined)
- mov %1,_bp
- inc %1
+ ; Peephole 210 simplified expression
+ mov dptr,#%1
}
replace {
- mov dptr,#((((%1 >> 8)) <<8) + %1)
+ push %1
+ pop %1
} by {
- ; Peephole 210 simplified expression
- mov dptr,#%1
+ ; Peephole 211 removed redundant push %1 pop %1
}
-replace {
- push %1
- pop %1
-} by {
- ; Peephole 211 removed redundant push %1 pop %1
-}
+// Does not seem to be triggered anymore
+//replace {
+// mov a,_bp
+// add a,#0x01
+// mov r%1,a
+//} by {
+// ; Peephole 212 reduced add sequence to inc
+// mov r%1,_bp
+// inc r%1
+//}
+// reverts peephole 159? asx8051 cannot handle, too complex?
replace {
- mov a,_bp
- add a,#0x01
- mov r%1,a
+ mov %1,#(( %2 >> 8 ) ^ 0x80)
} by {
- ; Peephole 212 reduced add sequence to inc
- mov r%1,_bp
- inc r%1
+ ; Peephole 213.a inserted fix
+ mov %1,#(%2 >> 8)
+ xrl %1,#0x80
}
replace {
- mov %1,#(( %2 >> 8 ) ^ 0x80)
+ mov %1,#(( %2 + %3 >> 8 ) ^ 0x80)
} by {
- ; Peephole 213.a inserted fix
- mov %1,#(%2 >> 8)
- xrl %1,#0x80
+ ; Peephole 213.b inserted fix
+ mov %1,#((%2 + %3) >> 8)
+ xrl %1,#0x80
}
-replace {
- mov %1,#(( %2 + %3 >> 8 ) ^ 0x80)
-} by {
- ; Peephole 213.b inserted fix
- mov %1,#((%2 + %3) >> 8)
- xrl %1,#0x80
-}
-replace {
- mov %1,a
- mov a,%2
- add a,%1
+replace {
+ mov %1,a
+ mov a,%2
+ add a,%1
} by {
- ; Peephole 214 reduced some extra moves
- mov %1,a
- add a,%2
+ mov %1,a
+ ; Peephole 214.a removed redundant mov
+ add a,%2
} if operandsNotSame
replace {
- mov %1,a
- add a,%2
- mov %1,a
+ mov %1,a
+ add a,%2
+ mov %1,a
} by {
- ; Peephole 215 removed some moves
- add a,%2
- mov %1,a
+ ; Peephole 214.b removed redundant mov
+ add a,%2
+ mov %1,a
} if operandsNotSame
replace {
- mov r%1,%2
- clr a
- inc r%1
- mov @r%1,a
- dec r%1
- mov @r%1,a
+ mov r%1,%2
+ clr a
+ inc r%1
+ mov @r%1,a
+ dec r%1
+ mov @r%1,a
} by {
- ; Peephole 216 simplified clear (2bytes)
- mov r%1,%2
- clr a
- mov @r%1,a
- inc r%1
- mov @r%1,a
+ mov r%1,%2
+ clr a
+ ; Peephole 216.a simplified clear (2 bytes)
+ mov @r%1,a
+ inc r%1
+ mov @r%1,a
}
replace {
- mov r%1,%2
- clr a
- inc r%1
- inc r%1
- mov @r%1,a
- dec r%1
- mov @r%1,a
- dec r%1
- mov @r%1,a
-} by {
- ; Peephole 217 simplified clear (3bytes)
- mov r%1,%2
- clr a
- mov @r%1,a
- inc r%1
- mov @r%1,a
- inc r%1
- mov @r%1,a
+ mov r%1,%2
+ clr a
+ inc r%1
+ inc r%1
+ mov @r%1,a
+ dec r%1
+ mov @r%1,a
+ dec r%1
+ mov @r%1,a
+} by {
+ mov r%1,%2
+ clr a
+ ; Peephole 216.b simplified clear (3 bytes)
+ mov @r%1,a
+ inc r%1
+ mov @r%1,a
+ inc r%1
+ mov @r%1,a
}
replace {
- mov r%1,%2
- clr a
- inc r%1
- inc r%1
- inc r%1
- mov @r%1,a
- dec r%1
- mov @r%1,a
- dec r%1
- mov @r%1,a
- dec r%1
- mov @r%1,a
-} by {
- ; Peephole 218 simplified clear (4bytes)
- mov r%1,%2
- clr a
- mov @r%1,a
- inc r%1
- mov @r%1,a
- inc r%1
- mov @r%1,a
- inc r%1
- mov @r%1,a
+ mov r%1,%2
+ clr a
+ inc r%1
+ inc r%1
+ inc r%1
+ mov @r%1,a
+ dec r%1
+ mov @r%1,a
+ dec r%1
+ mov @r%1,a
+ dec r%1
+ mov @r%1,a
+} by {
+ mov r%1,%2
+ clr a
+ ; Peephole 216.c simplified clear (4 bytes)
+ mov @r%1,a
+ inc r%1
+ mov @r%1,a
+ inc r%1
+ mov @r%1,a
+ inc r%1
+ mov @r%1,a
}
replace {
- clr a
- movx @dptr,a
- mov dptr,%1
- clr a
- movx @dptr,a
+ clr a
+ movx @dptr,a
+ mov dptr,%1
+ clr a
+ movx @dptr,a
} by {
- ; Peephole 219 removed redundant clear
- clr a
- movx @dptr,a
- mov dptr,%1
- movx @dptr,a
+ ; Peephole 219.a removed redundant clear
+ clr a
+ movx @dptr,a
+ mov dptr,%1
+ movx @dptr,a
}
replace {
- clr a
- movx @dptr,a
- mov dptr,%1
- movx @dptr,a
- mov dptr,%2
- clr a
- movx @dptr,a
-} by {
- ; Peephole 219.a removed redundant clear
- clr a
- movx @dptr,a
- mov dptr,%1
- movx @dptr,a
- mov dptr,%2
- movx @dptr,a
+ clr a
+ movx @dptr,a
+ mov dptr,%1
+ movx @dptr,a
+ mov dptr,%2
+ clr a
+ movx @dptr,a
+} by {
+ clr a
+ movx @dptr,a
+ mov dptr,%1
+ movx @dptr,a
+ mov dptr,%2
+ ; Peephole 219.b removed redundant clear
+ movx @dptr,a
}
replace {
- mov dps,#0x00
- mov dps,#0x01
+ mov dps,#0x00
+ mov dps,#0x01
} by {
- ; Peephole 220.a removed bogus DPS set
- mov dps,#0x01
+ ; Peephole 220.a removed bogus DPS set
+ mov dps,#0x01
}
replace {
- mov dps,#0x01
- mov dps,#0x00
+ mov dps,#0x01
+ mov dps,#0x00
} by {
- ; Peephole 220.b removed bogus DPS set
- mov dps,#0x00
+ ; Peephole 220.b removed bogus DPS set
+ mov dps,#0x00
}
replace {
- mov %1 + %2,(%2 + %1)
+ mov %1 + %2,(%2 + %1)
} by {
- ; Peephole 221.a remove redundant move
-}
+ ; Peephole 221.a remove redundant mov
+} if notVolatile
replace {
- mov (%1 + %2 + %3),((%2 + %1) + %3)
+ mov (%1 + %2 + %3),((%2 + %1) + %3)
} by {
- ; Peephole 221.b remove redundant move
-}
+ ; Peephole 221.b remove redundant mov
+} if notVolatile
replace {
- dec r%1
- inc r%1
+ dec r%1
+ inc r%1
} by {
- ; Peephole 222 removed dec/inc pair
+ ; Peephole 222 removed dec/inc pair
}
replace {
- mov %1,dpl
- mov %2,dph
- mov dpl,%1
- mov dph,%2
+ mov %1,dpl
+ mov %2,dph
+ mov dpl,%1
+ mov dph,%2
} by {
- ; Peephole 223 removed redundant dph/dpl moves
- mov %1,dpl
- mov %2,dph
-}
+ mov %1,dpl
+ mov %2,dph
+ ; Peephole 223.a removed redundant dph/dpl moves
+} if notVolatile %1 %2
replace {
- mov %1,dpl
- mov (%1 + 1),dph
- mov dpl,%1
- mov dph,(%1 + 1)
+ mov %1,dpl
+ mov (%1 + 1),dph
+ mov dpl,%1
+ mov dph,(%1 + 1)
} by {
- ; Peephole 224 removed redundant dph/dpl moves
- mov %1,dpl
- mov (%1 + 1),dph
-}
+ mov %1,dpl
+ mov (%1 + 1),dph
+ ; Peephole 223.b removed redundant dph/dpl moves
+} if notVolatile %1
replace {
- mov a,%1
- movx @dptr,a
- mov dpl,%2
- mov dph,%3
- mov b,%4
- mov a,%1
+ mov a,%1
+ movx @dptr,a
+ mov dpl,%2
+ mov dph,%3
+ mov b,%4
+ mov a,%1
} by {
- ; Peephole 225 removed redundant move to acc
- mov a,%1
- movx @dptr,a
- mov dpl,%2
- mov dph,%3
- mov b,%4
-}
+ mov a,%1
+ movx @dptr,a
+ mov dpl,%2
+ mov dph,%3
+ mov b,%4
+ ; Peephole 225 removed redundant move to acc
+} if notVolatile %1
replace {
- clr a
- movx @dptr,a
- inc dptr
- movx @dptr,a
- inc dptr
- clr a
+ clr a
+ movx @%1,a
+ inc %1
+ clr a
} by {
- ; Peephole 226 removed unnecessary clr
- clr a
- movx @dptr,a
- inc dptr
- movx @dptr,a
- inc dptr
+ clr a
+ movx @%1,a
+ inc %1
+ ; Peephole 226.a removed unnecessary clr
}
replace {
- mov dptr,#%1
- clr a
- inc dptr
- inc dptr
- inc dptr
- movx @dptr,a
- lcall __decdptr
- movx @dptr,a
- lcall __decdptr
- movx @dptr,a
- lcall __decdptr
- movx @dptr,a
+ clr a
+ movx @%1,a
+ inc %1
+ movx @%1,a
+ inc %1
+ clr a
} by {
- ; Peephole 227 replaced inefficient 32 bit clear
- mov dptr,#%1
- clr a
- movx @dptr,a
- inc dptr
- movx @dptr,a
- inc dptr
- movx @dptr,a
- inc dptr
- movx @dptr,a
- mov dptr,#%1
+ clr a
+ movx @%1,a
+ inc %1
+ movx @%1,a
+ inc %1
+ ; Peephole 226.b removed unnecessary clr
}
replace {
- mov dptr,#%1
- clr a
- inc dptr
- inc dptr
- inc dptr
- movx @dptr,a
- lcall __decdptr
- movx @dptr,a
- lcall __decdptr
- movx @dptr,a
- lcall __decdptr
- mov a,#%2
- movx @dptr,a
-} by {
- ; Peephole 228 replaced inefficient 32 constant
- mov dptr,#%1
- mov a,#%2
- movx @dptr,a
- inc dptr
- clr a
- movx @dptr,a
- inc dptr
- movx @dptr,a
- inc dptr
- movx @dptr,a
- mov dptr,#%1
-}
-
-replace {
- mov dptr,#%1
- clr a
- inc dptr
- movx @dptr,a
- lcall __decdptr
- movx @dptr,a
-} by {
- ; Peephole 229 replaced inefficient 16 bit clear
- mov dptr,#%1
- clr a
- movx @dptr,a
- inc dptr
- movx @dptr,a
- mov dptr,#%1
-}
-
-replace {
- mov dptr,#%1
- clr a
- inc dptr
- movx @dptr,a
- lcall __decdptr
- mov a,#%2
- movx @dptr,a
-} by {
- ; Peephole 230 replaced inefficient 16 constant
- mov dptr,#%1
- mov a,#%2
- movx @dptr,a
- inc dptr
- clr a
- movx @dptr,a
- mov dptr,#%1
-}
-
-// this last peephole often removes the last mov from 227-230
-replace {
- mov dptr,#%1
- mov dptr,#%2
-} by {
- ; Peephole 231 removed redundant mov to dptr
- mov dptr,#%2
-}
-
-replace {
- movx a,@dptr
-} by {
- ; Peephole 232 using movc to read xdata (--xram-movc)
- clr a
- movc a,@a+dptr
-} if xramMovcOption
+ mov dptr,#%1
+ clr a
+ inc dptr
+ inc dptr
+ inc dptr
+ movx @dptr,a
+ lcall __decdptr
+ movx @dptr,a
+ lcall __decdptr
+ movx @dptr,a
+ lcall __decdptr
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ clr a
+ ; Peephole 227.a replaced inefficient 32 bit clear
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+ mov dptr,#%1
+}
replace {
- lcall _gptrget
-} by {
- ; Peephole 233 using _gptrgetc instead of _gptrget (--xram-movc)
- lcall _gptrgetc
-} if xramMovcOption
+ mov dptr,#%1
+ clr a
+ inc dptr
+ inc dptr
+ inc dptr
+ movx @dptr,a
+ lcall __decdptr
+ movx @dptr,a
+ lcall __decdptr
+ movx @dptr,a
+ lcall __decdptr
+ mov a,#%2
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ ; Peephole 227.b replaced inefficient 32 constant
+ mov a,#%2
+ movx @dptr,a
+ inc dptr
+ clr a
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+ mov dptr,#%1
+}
replace {
- mov r%1,a
- mov dpl,r%1
-%2:
- ret
-} by {
- ; Peephole 234 loading dpl directly from a(ccumulator), r%1 not set
- mov dpl,a
+ mov dptr,#%1
+ clr a
+ inc dptr
+ movx @dptr,a
+ lcall __decdptr
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ clr a
+ ; Peephole 227.c replaced inefficient 16 bit clear
+ movx @dptr,a
+ inc dptr
+ movx @dptr,a
+ mov dptr,#%1
+}
+
+replace {
+ mov dptr,#%1
+ clr a
+ inc dptr
+ movx @dptr,a
+ lcall __decdptr
+ mov a,#%2
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ ; Peephole 227.d replaced inefficient 16 bit constant
+ mov a,#%2
+ movx @dptr,a
+ inc dptr
+ clr a
+ movx @dptr,a
+ mov dptr,#%1
+}
+
+// this last peephole often removes the last mov from 227.a - 227.d
+replace {
+ mov dptr,#%1
+ mov dptr,#%2
+} by {
+ ; Peephole 227.e removed redundant mov to dptr
+ mov dptr,#%2
+}
+
+replace {
+ movx a,@dptr
+} by {
+ ; Peephole 232 using movc to read xdata (--xram-movc)
+ clr a
+ movc a,@a+dptr
+} if xramMovcOption
+
+replace {
+ lcall _gptrget
+} by {
+ ; Peephole 233 using _gptrgetc instead of _gptrget (--xram-movc)
+ lcall _gptrgetc
+} if xramMovcOption
+
+replace {
+ mov r%1,a
+ mov dpl,r%1
%2:
- ret
+ ret
+} by {
+ ; Peephole 234.a loading dpl directly from a(ccumulator), r%1 not set
+ mov dpl,a
+%2:
+ ret
}
replace {
- mov r%1,a
- mov dpl,r%2
- mov dph,r%1
+ mov r%1,a
+ mov dpl,r%2
+ mov dph,r%1
%3:
- ret
+ ret
} by {
- ; Peephole 235 loading dph directly from a(ccumulator), r%1 not set
- mov dpl,r%2
- mov dph,a
+ ; Peephole 234.b loading dph directly from a(ccumulator), r%1 not set
+ mov dpl,r%2
+ mov dph,a
%3:
- ret
+ ret
}
// 14 rules by Fiorenzo D. Ramaglia <fd.ramaglia@tin.it>
replace {
- add a,ar%1
+ add a,ar%1
} by {
- ; Peephole 236.a used r%1 instead of ar%1
- add a,r%1
+ ; Peephole 236.a used r%1 instead of ar%1
+ add a,r%1
}
replace {
- addc a,ar%1
+ addc a,ar%1
} by {
- ; Peephole 236.b used r%1 instead of ar%1
- addc a,r%1
+ ; Peephole 236.b used r%1 instead of ar%1
+ addc a,r%1
}
replace {
- anl a,ar%1
+ anl a,ar%1
} by {
- ; Peephole 236.c used r%1 instead of ar%1
- anl a,r%1
+ ; Peephole 236.c used r%1 instead of ar%1
+ anl a,r%1
}
replace {
- dec ar%1
+ dec ar%1
} by {
- ; Peephole 236.d used r%1 instead of ar%1
- dec r%1
+ ; Peephole 236.d used r%1 instead of ar%1
+ dec r%1
}
replace {
- djnz ar%1,%2
+ djnz ar%1,%2
} by {
- ; Peephole 236.e used r%1 instead of ar%1
- djnz r%1,%2
+ ; Peephole 236.e used r%1 instead of ar%1
+ djnz r%1,%2
}
replace {
- inc ar%1
+ inc ar%1
} by {
- ; Peephole 236.f used r%1 instead of ar%1
- inc r%1
+ ; Peephole 236.f used r%1 instead of ar%1
+ inc r%1
}
replace {
- mov a,ar%1
+ mov a,ar%1
} by {
- ; Peephole 236.g used r%1 instead of ar%1
- mov a,r%1
+ ; Peephole 236.g used r%1 instead of ar%1
+ mov a,r%1
}
replace {
- mov ar%1,#%2
+ mov ar%1,#%2
} by {
- ; Peephole 236.h used r%1 instead of ar%1
- mov r%1,#%2
+ ; Peephole 236.h used r%1 instead of ar%1
+ mov r%1,#%2
}
replace {
- mov ar%1,a
+ mov ar%1,a
} by {
- ; Peephole 236.i used r%1 instead of ar%1
- mov r%1,a
+ ; Peephole 236.i used r%1 instead of ar%1
+ mov r%1,a
}
replace {
- mov ar%1,ar%2
+ mov ar%1,ar%2
} by {
- ; Peephole 236.j used r%1 instead of ar%1
- mov r%1,ar%2
+ ; Peephole 236.j used r%1 instead of ar%1
+ mov r%1,ar%2
}
replace {
- orl a,ar%1
+ orl a,ar%1
} by {
- ; Peephole 236.k used r%1 instead of ar%1
- orl a,r%1
+ ; Peephole 236.k used r%1 instead of ar%1
+ orl a,r%1
}
replace {
- subb a,ar%1
+ subb a,ar%1
} by {
- ; Peephole 236.l used r%1 instead of ar%1
- subb a,r%1
+ ; Peephole 236.l used r%1 instead of ar%1
+ subb a,r%1
}
replace {
- xch a,ar%1
+ xch a,ar%1
} by {
- ; Peephole 236.m used r%1 instead of ar%1
- xch a,r%1
+ ; Peephole 236.m used r%1 instead of ar%1
+ xch a,r%1
}
replace {
- xrl a,ar%1
+ xrl a,ar%1
} by {
- ; Peephole 236.n used r%1 instead of ar%1
- xrl a,r%1
+ ; Peephole 236.n used r%1 instead of ar%1
+ xrl a,r%1
}
replace {
- sjmp %1
+ sjmp %1
%2:
- mov %3,%4
+ mov %3,%4
%1:
- ret
+ ret
} by {
- ; Peephole 237.a removed sjmp to ret
- ret
+ ; Peephole 237.a removed sjmp to ret
+ ret
%2:
- mov %3,%4
+ mov %3,%4
%1:
- ret
-}
+ ret
+} if labelRefCountChange(%1 -1)
replace {
- sjmp %1
+ sjmp %1
%2:
- mov %3,%4
- mov dpl,%5
- mov dph,%6
+ mov %3,%4
+ mov dpl,%5
+ mov dph,%6
%1:
- ret
+ ret
} by {
- ; Peephole 237.b removed sjmp to ret
- ret
+ ; Peephole 237.b removed sjmp to ret
+ ret
%2:
- mov %3,%4
- mov dpl,%5
- mov dph,%6
+ mov %3,%4
+ mov dpl,%5
+ mov dph,%6
%1:
- ret
-}
+ ret
+} if labelRefCountChange(%1 -1)
// applies to f.e. device/lib/log10f.c
replace {
- mov %1,%9
- mov %2,%10
- mov %3,%11
- mov %4,%12
-
- mov %5,%13
- mov %6,%14
- mov %7,%15
- mov %8,%16
-
- mov %9,%1
- mov %10,%2
- mov %11,%3
- mov %12,%4
-} by {
- mov %1,%9
- mov %2,%10
- mov %3,%11
- mov %4,%12
-
- mov %5,%13
- mov %6,%14
- mov %7,%15
- mov %8,%16
- ; Peephole 238.a removed 4 redundant moves
-} if operandsNotSame8 %1 %2 %3 %4 %5 %6 %7 %8
+ mov %1,%9
+ mov %2,%10
+ mov %3,%11
+ mov %4,%12
+
+ mov %5,%13
+ mov %6,%14
+ mov %7,%15
+ mov %8,%16
+
+ mov %9,%1
+ mov %10,%2
+ mov %11,%3
+ mov %12,%4
+} by {
+ mov %1,%9
+ mov %2,%10
+ mov %3,%11
+ mov %4,%12
+
+ mov %5,%13
+ mov %6,%14
+ mov %7,%15
+ mov %8,%16
+ ; Peephole 238.a removed 4 redundant moves
+} if operandsNotSame8(%1 %2 %3 %4 %5 %6 %7 %8), notVolatile(%1 %2 %3 %4 %9 %10 %11 %12)
// applies to device/lib/log10f.c
replace {
- mov %1,%5
- mov %2,%6
- mov %3,%7
- mov %4,%8
-
- mov %5,%1
- mov %6,%2
- mov %7,%3
-} by {
- mov %1,%5
- mov %2,%6
- mov %3,%7
- mov %4,%8
- ; Peephole 238.b removed 3 redundant moves
-} if operandsNotSame7 %1 %2 %3 %4 %5 %6 %7
+ mov %1,%5
+ mov %2,%6
+ mov %3,%7
+ mov %4,%8
+
+ mov %5,%1
+ mov %6,%2
+ mov %7,%3
+} by {
+ mov %1,%5
+ mov %2,%6
+ mov %3,%7
+ mov %4,%8
+ ; Peephole 238.b removed 3 redundant moves
+} if operandsNotSame7(%1 %2 %3 %4 %5 %6 %7), notVolatile(%1 %2 %3 %5 %6 %7)
// applies to f.e. device/lib/time.c
replace {
- mov %1,%5
- mov %2,%6
-
- mov %3,%7
- mov %4,%8
+ mov %1,%5
+ mov %2,%6
+
+ mov %3,%7
+ mov %4,%8
- mov %5,%1
- mov %6,%2
+ mov %5,%1
+ mov %6,%2
} by {
- mov %1,%5
- mov %2,%6
-
- mov %3,%7
- mov %4,%8
- ; Peephole 238.c removed 2 redundant moves
-} if operandsNotSame4 %1 %2 %3 %4
+ mov %1,%5
+ mov %2,%6
+
+ mov %3,%7
+ mov %4,%8
+ ; Peephole 238.c removed 2 redundant moves
+} if operandsNotSame4(%1 %2 %3 %4), notVolatile(%1 %2 %5 %6)
// applies to f.e. support/regression/tests/bug-524209.c
replace {
- mov %1,%4
- mov %2,%5
- mov %3,%6
+ mov %1,%4
+ mov %2,%5
+ mov %3,%6
- mov %4,%1
- mov %5,%2
- mov %6,%3
+ mov %4,%1
+ mov %5,%2
+ mov %6,%3
} by {
- mov %1,%4
- mov %2,%5
- mov %3,%6
- ; Peephole 238.d removed 3 redundant moves
-} if operandsNotSame6 %1 %2 %3 %4 %5 %6
+ mov %1,%4
+ mov %2,%5
+ mov %3,%6
+ ; Peephole 238.d removed 3 redundant moves
+} if operandsNotSame6(%1 %2 %3 %4 %5 %6), notVolatile(%1 %2 %3 %4 %5 %6)
// applies to f.e. ser_ir.asm
replace {
- mov r%1,acc
+ mov r%1,acc
+} by {
+ ; Peephole 239 used a instead of acc
+ mov r%1,a
+}
+
+replace restart {
+ mov a,%1
+ addc a,#0x00
+} by {
+ ; Peephole 240 use clr instead of addc a,#0
+ clr a
+ addc a,%1
+}
+
+// peepholes 241.a to 241.d and 241.e to 241.h need to be in order
+replace {
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ cjne r%6,#%7,%0
+ cjne r%8,#%9,%0
+ mov a,#0x01
+ sjmp %1
+%0:
+ clr a
+%1:
+} by {
+ ; Peephole 241.a optimized compare
+ clr a
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ cjne r%6,#%7,%0
+ cjne r%8,#%9,%0
+ inc a
+%0:
+%1:
+} if labelRefCountChange(%1 -1)
+
+// applies to generic pointer compare
+replace {
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ cjne r%6,#%7,%0
+ mov a,#0x01
+ sjmp %1
+%0:
+ clr a
+%1:
+} by {
+ ; Peephole 241.b optimized compare
+ clr a
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ cjne r%6,#%7,%0
+ inc a
+%0:
+%1:
+} if labelRefCountChange(%1 -1)
+
+// applies to f.e. time.c
+replace {
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ mov a,#0x01
+ sjmp %1
+%0:
+ clr a
+%1:
+} by {
+ ; Peephole 241.c optimized compare
+ clr a
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ inc a
+%0:
+%1:
+} if labelRefCountChange(%1 -1)
+
+// applies to f.e. malloc.c
+replace {
+ cjne r%2,#%3,%0
+ mov a,#0x01
+ sjmp %1
+%0:
+ clr a
+%1:
+} by {
+ ; Peephole 241.d optimized compare
+ clr a
+ cjne r%2,#%3,%0
+ inc a
+%0:
+%1:
+} if labelRefCountChange(%1 -1)
+
+// applies to f.e. j = (k!=0x1000);
+// with volatile idata long k;
+replace {
+ cjne @r%0,#%3,%1
+ inc r%0
+ cjne @r%0,#%4,%1
+ inc r%0
+ cjne @r%0,#%5,%1
+ inc r%0
+ cjne @r%0,#%6,%1
+ mov a,#0x01
+ sjmp %2
+%1:
+ clr a
+%2:
+} by {
+ ; Peephole 241.e optimized compare
+ clr a
+ cjne @r%0,#%3,%1
+ inc r%0
+ cjne @r%0,#%4,%1
+ inc r%0
+ cjne @r%0,#%5,%1
+ inc r%0
+ cjne @r%0,#%6,%1
+ inc a
+%1:
+%2:
+} if labelRefCountChange(%2 -1)
+
+// applies to f.e. j = (p!=NULL);
+// with volatile idata char *p;
+replace {
+ cjne @r%0,#%3,%1
+ inc r%0
+ cjne @r%0,#%4,%1
+ inc r%0
+ cjne @r%0,#%5,%1
+ mov a,#0x01
+ sjmp %2
+%1:
+ clr a
+%2:
+} by {
+ ; Peephole 241.f optimized compare
+ clr a
+ cjne @r%0,#%3,%1
+ inc r%0
+ cjne @r%0,#%4,%1
+ inc r%0
+ cjne @r%0,#%5,%1
+ inc a
+%1:
+%2:
+} if labelRefCountChange(%2 -1)
+
+// applies to f.e. j = (k!=0x1000);
+// with volatile idata int k;
+replace {
+ cjne @r%0,#%3,%1
+ inc r%0
+ cjne @r%0,#%4,%1
+ mov a,#0x01
+ sjmp %2
+%1:
+ clr a
+%2:
+} by {
+ ; Peephole 241.g optimized compare
+ clr a
+ cjne @r%0,#%3,%1
+ inc r%0
+ cjne @r%0,#%4,%1
+ inc a
+%1:
+%2:
+} if labelRefCountChange(%2 -1)
+
+// applies to f.e. vprintf.asm (--stack-auto)
+replace {
+ cjne @r%0,#%3,%1
+ mov a,#0x01
+ sjmp %2
+%1:
+ clr a
+%2:
+} by {
+ ; Peephole 241.h optimized compare
+ clr a
+ cjne @r%0,#%3,%1
+ inc a
+%1:
+%2:
+} if labelRefCountChange(%2 -1)
+
+// applies to f.e. scott-bool1.c
+replace {
+ jnz %1
+ mov %2,%3
+%1:
+ jz %4
+} by {
+ jnz %1
+ mov %2,%3
+ ; Peephole 242.a avoided branch jnz to jz
+ jz %4
+%1:
+} if labelRefCount %1 1
+
+// applies to f.e. scott-bool1.c
+replace {
+ jnz %1
+ mov %2,%3
+ orl a,%5
+%1:
+ jz %4
+} by {
+ jnz %1
+ mov %2,%3
+ orl a,%5
+ ; Peephole 242.b avoided branch jnz to jz
+ jz %4
+%1:
+} if labelRefCount %1 1
+
+// applies to f.e. logic.c
+replace {
+ jnz %1
+ mov %2,%3
+ orl a,%5
+ orl a,%6
+ orl a,%7
+%1:
+ jz %4
+} by {
+ jnz %1
+ mov %2,%3
+ orl a,%5
+ orl a,%6
+ orl a,%7
+ ; Peephole 242.c avoided branch jnz to jz
+ jz %4
+%1:
+} if labelRefCount %1 1
+
+// applies to f.e. vprintf.c
+// this is a rare case, usually the "tail increment" is noticed earlier
+replace {
+ cjne %1,%2,%3
+ inc %4
+%3:
+ sjmp %5
+} by {
+ ; Peephole 243 avoided branch to sjmp
+ cjne %1,%2,%5
+ inc %4
+%3:
+ sjmp %5
+} if labelInRange(), labelRefCountChange(%3 -1), labelRefCountChange(%5 1)
+
+// applies to f.e. simplefloat.c (saving 1 cycle)
+replace {
+ mov r%1,dpl
+ mov a,r%1
+} by {
+ ; Peephole 244.a moving first to a instead of r%1
+ mov a,dpl
+ mov r%1,a
+}
+
+// applies to f.e. _itoa.c (saving 1 cycle)
+replace {
+ mov r%1,dph
+ mov a,r%1
+} by {
+ ; Peephole 244.b moving first to a instead of r%1
+ mov a,dph
+ mov r%1,a
+}
+
+
+// applies to f.e. bug-460010.c (saving 1 cycle)
+replace {
+ mov r%1,a
+ mov dpl,r%1
+} by {
+ mov r%1,a
+ ; Peephole 244.c loading dpl from a instead of r%1
+ mov dpl,a
+}
+
+replace {
+ mov r%1,a
+ mov dph,r%1
+} by {
+ mov r%1,a
+ ; Peephole 244.d loading dph from a instead of r%1
+ mov dph,a
+}
+
+// this one is safe but disables 245.a 245.b
+// please remove 245 if 245.a 245.b are found to be safe
+// applies to f.e. scott-compare.c
+replace {
+ clr a
+ rlc a
+ mov r%1,a
+ cjne a,#0x01,%2
+%2:
+ clr a
+ rlc a
+ mov r%1,a
+} by {
+ ; Peephole 245 optimized complement (r%1 and acc set needed?)
+ cpl c
+ clr a
+ rlc a
+ mov r%1,a
+} if labelRefCount(%2 1), labelRefCountChange(%2 -1)
+
+// this one will not be triggered if 245 is present
+// please remove 245 if 245.a 245.b are found to be safe
+// applies to f.e. vprintf.c
+replace {
+ clr a
+ rlc a
+ mov r%1,a
+ cjne a,#0x01,%2
+%2:
+ clr a
+ rlc a
+ mov r%1,a
+ jz %3
+} by {
+ ; Peephole 245.a optimized conditional jump (r%1 and acc not set!)
+ jc %3
+} if labelRefCount(%2 1), labelRefCountChange(%2 -1)
+
+// this one will not be triggered if 245 is present
+// please remove 245 if 245.a 245.b are found to be safe
+// applies to f.e. scott-compare.c
+replace {
+ clr a
+ rlc a
+ mov r%1,a
+ cjne a,#0x01,%2
+%2:
+ clr a
+ rlc a
+ mov r%1,a
+ jnz %3
+} by {
+ ; Peephole 245.b optimized conditional jump (r%1 and acc not set!)
+ jnc %3
+} if labelRefCount(%2 1), labelRefCountChange(%2 -1)
+
+
+// rules 246.x apply to f.e. bitfields.c
+replace {
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%2
+ movx @dptr,a
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%3
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ movx a,@dptr
+ ; Peephole 246.a combined clr/clr
+ anl a,#%2&%3
+ movx @dptr,a
+} if notVolatile %1
+
+replace {
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%2
+ movx @dptr,a
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%3
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ movx a,@dptr
+ ; Peephole 246.b combined set/set
+ orl a,#%2|%3
+ movx @dptr,a
+} if notVolatile %1
+
+replace {
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%2
+ movx @dptr,a
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%3
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%2
+ ; Peephole 246.c combined set/clr
+ anl a,#%3
+ movx @dptr,a
+} if notVolatile %1
+
+replace {
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%2
+ movx @dptr,a
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%3
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%2
+ ; Peephole 246.d combined clr/set
+ orl a,#%3
+ movx @dptr,a
+} if notVolatile %1
+
+replace {
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%2
+ anl a,#%3
+ movx @dptr,a
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%4
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%2
+ ; Peephole 246.e combined set/clr/clr
+ anl a,#%3&%4
+ movx @dptr,a
+} if notVolatile %1
+
+replace {
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%2
+ anl a,#%3
+ movx @dptr,a
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%4
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%2
+ anl a,#%3
+ ; Peephole 246.f combined set/clr/set
+ orl a,#%4
+ movx @dptr,a
+} if notVolatile %1
+
+replace {
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%2
+ orl a,#%3
+ movx @dptr,a
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%4
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%2
+ orl a,#%3
+ ; Peephole 246.g combined clr/set/clr
+ anl a,#%4
+ movx @dptr,a
+} if notVolatile %1
+
+replace {
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%2
+ orl a,#%3
+ movx @dptr,a
+ mov dptr,#%1
+ movx a,@dptr
+ orl a,#%4
+ movx @dptr,a
+} by {
+ mov dptr,#%1
+ movx a,@dptr
+ anl a,#%2
+ ; Peephole 246.h combined clr/set/set
+ orl a,#%3|%4
+ movx @dptr,a
+} if notVolatile %1
+
+
+// rules 247.x apply to f.e. bitfields.c
+replace {
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%2
+ mov @r%5,a
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%3
+ mov @r%5,a
+} by {
+ mov r%5,#%1
+ mov a,@r%5
+ ; Peephole 247.a combined clr/clr
+ anl a,#%2&%3
+ mov @r%5,a
+} if notVolatile %1
+
+replace {
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%2
+ mov @r%5,a
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%3
+ mov @r%5,a
+} by {
+ mov r%5,#%1
+ mov a,@r%5
+ ; Peephole 247.b combined set/set
+ orl a,#%2|%3
+ mov @r%5,a
+} if notVolatile %1
+
+replace {
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%2
+ mov @r%5,a
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%3
+ mov @r%5,a
+} by {
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%2
+ ; Peephole 247.c combined set/clr
+ anl a,#%3
+ mov @r%5,a
+} if notVolatile %1
+
+replace {
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%2
+ mov @r%5,a
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%3
+ mov @r%5,a
+} by {
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%2
+ ; Peephole 247.d combined clr/set
+ orl a,#%3
+ mov @r%5,a
+} if notVolatile %1
+
+replace {
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%2
+ anl a,#%3
+ mov @r%5,a
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%4
+ mov @r%5,a
+} by {
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%2
+ ; Peephole 247.e combined set/clr/clr
+ anl a,#%3&%4
+ mov @r%5,a
+} if notVolatile %1
+
+replace {
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%2
+ anl a,#%3
+ mov @r%5,a
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%4
+ mov @r%5,a
+} by {
+ mov r%5,#%1
+ mov a,@r%5
+ orl a,#%2
+ anl a,#%3
+ ; Peephole 247.f combined set/clr/set
+ orl a,#%4
+ mov @r%5,a
+} if notVolatile %1
+
+replace {
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%2
+ orl a,#%3
+ mov @r%5,a
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%4
+ mov @r%5,a
+} by {
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%2
+ orl a,#%3
+ ; Peephole 247.g combined clr/set/clr
+ anl a,#%4
+ mov @r%5,a
+} if notVolatile %1
+
+replace {
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%2
+ orl a,#%3
+ mov @r%5,a
+ mov r%5,#%1
+ mov a,@r%4
+ orl a,#%4
+ mov @r%5,a
+} by {
+ mov r%5,#%1
+ mov a,@r%5
+ anl a,#%2
+ ; Peephole 247.h combined clr/set/set
+ orl a,#%3|%4
+ mov @r%5,a
+} if notVolatile %1
+
+
+// Peepholes 248.x have to be compatible with the keyword volatile.
+// They optimize typical accesses to memory mapped I/O devices:
+// volatile xdata char t; t|=0x01;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ mov dptr,%1
+ mov a,%3
+ orl a,r%2
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ ; Peephole 248.a optimized or to xdata
+ orl a,%3
+ movx @dptr,a
+}
+
+// volatile xdata char t; t&=0x01;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ mov dptr,%1
+ mov a,%3
+ anl a,r%2
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ ; Peephole 248.b optimized and to xdata
+ anl a,%3
+ movx @dptr,a
+}
+
+// volatile xdata char t; t^=0x01;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ mov dptr,%1
+ mov a,%3
+ xrl a,r%2
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ ; Peephole 248.c optimized xor to xdata
+ xrl a,%3
+ movx @dptr,a
+}
+
+// volatile xdata char t; t|=0x01; t&=~0x01; t|=0x01;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ orl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ anl a,%4
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ orl a,%5
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ ; Peephole 248.d optimized or/and/or to volatile xdata
+ orl a,%3
+ movx @dptr,a
+ movx a,@dptr
+ anl a,%4
+ movx @dptr,a
+ movx a,@dptr
+ mov r%2,a
+ orl a,%5
+ movx @dptr,a
+}
+
+// volatile xdata char t; t&=~0x01; t|=0x01; t&=~0x01;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ anl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ orl a,%4
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ anl a,%5
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ ; Peephole 248.e optimized and/or/and to volatile xdata
+ anl a,%3
+ movx @dptr,a
+ movx a,@dptr
+ orl a,%4
+ movx @dptr,a
+ movx a,@dptr
+ mov r%2,a
+ anl a,%5
+ movx @dptr,a
+}
+
+// volatile xdata char t; t|=0x01; t&=~0x01;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ orl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ anl a,%4
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ ; Peephole 248.f optimized or/and to volatile xdata
+ orl a,%3
+ movx @dptr,a
+ movx a,@dptr
+ mov r%2,a
+ anl a,%4
+ movx @dptr,a
+}
+
+// volatile xdata char t; t&=~0x01; t|=0x01;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ anl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ orl a,%4
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ ; Peephole 248.g optimized and/or to volatile xdata
+ anl a,%3
+ movx @dptr,a
+ movx a,@dptr
+ mov r%2,a
+ orl a,%4
+ movx @dptr,a
+}
+
+// volatile xdata char t; t^=0x01; t^=0x01;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ xrl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ mov r%2,a
+ xrl a,%4
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ ; Peephole 248.h optimized xor/xor to volatile xdata
+ xrl a,%3
+ movx @dptr,a
+ movx a,@dptr
+ mov r%2,a
+ xrl a,%4
+ movx @dptr,a
+}
+
+// Peeepholes 248.i to 248.m are like 248.d to 248.h except they apply to bitfields:
+// xdata struct { unsigned b0:1; unsigned b1:1; unsigned b2:1; } xport;
+// xport.b0=1; xport.b0=0; xport.b0=1;
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ orl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ anl a,%4
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ orl a,%5
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ orl a,%3
+ movx @dptr,a
+ ; Peephole 248.i optimized or/and/or to xdata bitfield
+ movx a,@dptr
+ anl a,%4
+ movx @dptr,a
+ movx a,@dptr
+ orl a,%5
+ movx @dptr,a
+}
+
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ anl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ orl a,%4
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ anl a,%5
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ anl a,%3
+ movx @dptr,a
+ ; Peephole 248.j optimized and/or/and to xdata bitfield
+ movx a,@dptr
+ orl a,%4
+ movx @dptr,a
+ movx a,@dptr
+ anl a,%5
+ movx @dptr,a
+}
+
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ orl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ anl a,%4
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ orl a,%3
+ movx @dptr,a
+ ; Peephole 248.k optimized or/and to xdata bitfield
+ movx a,@dptr
+ anl a,%4
+ movx @dptr,a
+}
+
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ anl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ orl a,%4
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ anl a,%3
+ movx @dptr,a
+ ; Peephole 248.l optimized and/or to xdata bitfield
+ movx a,@dptr
+ orl a,%4
+ movx @dptr,a
+}
+
+replace {
+ mov dptr,%1
+ movx a,@dptr
+ xrl a,%3
+ movx @dptr,a
+
+ mov dptr,%1
+ movx a,@dptr
+ xrl a,%4
+ movx @dptr,a
+} by {
+ mov dptr,%1
+ movx a,@dptr
+ xrl a,%3
+ movx @dptr,a
+ ; Peephole 248.m optimized xor/xor to xdata bitfield
+ movx a,@dptr
+ xrl a,%4
+ movx @dptr,a
+}
+
+
+replace {
+ jnz %1
+%1:
+} by {
+ ; Peephole 249.a jump optimization
+} if labelRefCount(%1 1), labelRefCountChange(%1 -1)
+
+replace {
+ jz %1
+%1:
+} by {
+ ; Peephole 249.b jump optimization
+} if labelRefCount(%1 1), labelRefCountChange(%1 -1)
+
+
+// This allows non-interrupt and interrupt code to safely compete
+// for a resource without the non-interrupt code having to disable
+// interrupts:
+// volatile bit resource_is_free;
+// if( resource_is_free ) {
+// resource_is_free=0; do_something; resource_is_free=1;
+// }
+replace {
+ jnb %1,%2
+%3:
+ clr %1
+} by {
+ ; Peephole 250.a using atomic test and clear
+ jbc %1,%3
+ sjmp %2
+%3:
+} if labelRefCount(%3 0), labelRefCountChange(%3 1)
+
+replace {
+ jb %1,%2
+ ljmp %3
+%2:
+ clr %1
+} by {
+ ; Peephole 250.b using atomic test and clear
+ jbc %1,%2
+ ljmp %3
+%2:
+} if labelRefCount %2 1
+
+
+// not before peephole 250.b
+replace {
+ ljmp %5
+} by {
+ ; Peephole 251.a replaced ljmp to ret with ret
+ ret
+} if labelIsReturnOnly(), labelRefCountChange(%5 -1)
+
+// not before peephole 250.b
+replace {
+ sjmp %5
+} by {
+ ; Peephole 251.b replaced sjmp to ret with ret
+ ret
+} if labelIsReturnOnly(), labelRefCountChange(%5 -1)
+
+// applies to shifts.c and when accessing arrays with an unsigned integer index
+// saving 1 byte, 2 cycles
+replace {
+ mov r%1,%2
+ mov a,(%2 + 1)
+ xch a,r%1
+ add a,acc
+ xch a,r%1
+ rlc a
+ mov r%3,a
+} by {
+ ; Peephole 252 optimized left shift
+ mov a,%2
+ add a,acc
+ mov r%1,a
+ mov a,(%2 + 1)
+ rlc a
+ mov r%3,a
+}
+
+// unsigned char i=8; do{ } while(--i != 0);
+// this applies if i is kept in a register
+replace {
+ dec %1
+ cjne %1,#0x00,%2
+} by {
+ ; Peephole 253.a optimized decrement with compare
+ djnz %1,%2
+} if notVolatile(%1)
+
+// unsigned char i=8; do{ } while(--i != 0);
+// this applies if i is kept in data memory
+// must come before 256, see bug 1721024
+replace {
+ dec %1
+ mov a,%1
+ jnz %2
+} by {
+ ; Peephole 253.b optimized decrement with compare
+ djnz %1,%2
+} if notVolatile(%1), operandsNotRelated(%1 '@r0' '@r1')
+
+
+// applies to f.e. funptrs.c
+// saves one byte if %1 is a register or @register
+replace {
+ mov a,%1
+ add a,acc
+} by {
+ mov a,%1
+ ; Peephole 254 optimized left shift
+ add a,%1
+} if notVolatile %1
+
+// applies to f.e. switch.c
+replace {
+ clr c
+ mov a,#%1
+ subb a,%2
+ jc %3
+%4:
+ mov a,%2
+ add a,%2
+ add a,%2
+ mov dptr,%5
+ jmp @a+dptr
+} by {
+ ; Peephole 255 optimized jump table index calculation
+ mov a,%2
+ cjne a,#(%1+0x01),.+1
+ jnc %3
+%4:
+ add a,%2
+ add a,%2
+ mov dptr,%5
+ jmp @a+dptr
+}
+
+// applies to f.e. jump tables and scott-bool1.c.
+// similar peepholes can be constructed for other instructions
+// after which a flag or a register is known (like: djnz, cjne, jnc)
+replace {
+ jc %1
+%2:
+ clr c
+} by {
+ jc %1
+%2:
+ ; Peephole 256.a removed redundant clr c
+} if labelRefCount %2 0
+
+// applies to f.e. logf.c
+replace {
+ jnz %1
+%2:
+ clr a
+} by {
+ jnz %1
+%2:
+ ; Peephole 256.b removed redundant clr a
+} if labelRefCount %2 0
+
+// applies to f.e. bug-905492.c
+replace {
+ jnz %1
+%2:
+ mov %3,#0x00
+} by {
+ jnz %1
+%2:
+ ; Peephole 256.c loading %3 with zero from a
+ mov %3,a
+} if labelRefCount %2 0
+
+// applies to f.e. malloc.c
+replace {
+ jnz %1
+%2:
+ mov %4,%5
+ mov %3,#0x00
+} by {
+ jnz %1
+%2:
+ mov %4,%5
+ ; Peephole 256.d loading %3 with zero from a
+ mov %3,a
+} if labelRefCount(%2 0),operandsNotRelated('a' %4)
+
+replace {
+ jnz %1
+%2:
+ mov %4,%5
+ mov %6,%7
+ mov %3,#0x00
+} by {
+ jnz %1
+%2:
+ mov %4,%5
+ mov %6,%7
+ ; Peephole 256.e loading %3 with zero from a
+ mov %3,a
+} if labelRefCount(%2 0),operandsNotRelated('a' %4 %6)
+
+replace {
+ jnz %1
+%2:
+ mov %4,%5
+ mov %6,%7
+ mov %8,%9
+ mov %3,#0x00
+} by {
+ jnz %1
+%2:
+ mov %4,%5
+ mov %6,%7
+ mov %8,%9
+ ; Peephole 256.f loading %2 with zero from a
+ mov %3,a
+} if labelRefCount(%2 0),operandsNotRelated('a' %4 %6 %8)
+
+
+// in_byte<<=1; if(in_bit) in_byte|=1;
+// helps f.e. reading data on a 3-wire (SPI) bus
+replace {
+ mov a,%1
+ add a,%1
+ mov %1,a
+ jnb %2,%3
+%4:
+ orl %1,#0x01
+%3:
+} by {
+ mov a,%1
+ ; Peephole 258.a optimized bitbanging
+ mov c,%2
+ addc a,%1
+ mov %1,a
+%4:
+%3:
+} if notVolatile(%1), labelRefCountChange(%3 -1)
+
+// in_byte<<=1; if(in_bit) in_byte|=1;
+replace {
+ mov a,r%1
+ add a,r%1
+ mov r%1,a
+ jnb %2,%3
+%4:
+ orl ar%1,#0x01
+%3:
+} by {
+ mov a,r%1
+ ; Peephole 258.b optimized bitbanging
+ mov c,%2
+ addc a,r%1
+ mov r%1,a
+%4:
+%3:
+} if labelRefCountChange(%3 -1)
+
+// in_byte>>=1; if(in_bit) in_byte|=0x80;
+replace {
+ mov a,%1
+ clr c
+ rrc a
+ mov %1,a
+ jnb %2,%3
+%4:
+ orl %1,#0x80
+%3:
+} by {
+ mov a,%1
+ ; Peephole 258.c optimized bitbanging
+ mov c,%2
+ rrc a
+ mov %1,a
+%4:
+%3:
+} if notVolatile(%1), labelRefCountChange(%3 -1)
+
+// in_byte>>=1; if(in_bit) in_byte|=0x80;
+replace {
+ mov a,r%1
+ clr c
+ rrc a
+ mov r%1,a
+ jnb %2,%3
+%4:
+ orl ar%1,#0x80
+%3:
+} by {
+ mov a,r%1
+ ; Peephole 258.d optimized bitbanging
+ mov c,%2
+ rrc a
+ mov r%1,a
+%4:
+%3:
+} if labelRefCountChange(%3 -1)
+
+// out_bit=out_byte&0x80; out_byte<<=1;
+// helps f.e. writing data on a 3-wire (SPI) bus
+replace {
+ mov a,%1
+ rlc a
+ mov %2,c
+ mov a,%1
+ add a,%1
+ mov %1,a
+} by {
+ mov a,%1
+ ; Peephole 258.e optimized bitbanging
+ add a,%1
+ mov %2,c
+ mov %1,a
+} if notVolatile %1
+
+// out_bit=out_byte&0x01; out_byte>>=1;
+replace {
+ mov a,%1
+ rrc a
+ mov %2,c
+ mov a,%1
+ clr c
+ rrc a
+ mov %1,a
+} by {
+ mov a,%1
+ ; Peephole 258.f optimized bitbanging
+ clr c
+ rrc a
+ mov %2,c
+ mov %1,a
+} if notVolatile %1
+
+// Peepholes 259.x rely on the correct labelRefCount. Otherwise they are
+// not compatible with peepholes 250.x
+// Peepholes 250.x add jumps to a previously unused label. If the
+// labelRefCount is not increased, peepholes 259.x are (mistakenly) applied.
+// (Mail on sdcc-devel 2004-10-25)
+//
+// applies to f.e. vprintf.c
+replace {
+ sjmp %1
+%2:
+ ret
+} by {
+ sjmp %1
+ ; Peephole 259.a removed redundant label %2 and ret
+ ;
+} if labelRefCount %2 0
+
+// applies to f.e. gets.c
+replace {
+ ljmp %1
+%2:
+ ret
+} by {
+ ljmp %1
+ ; Peephole 259.b removed redundant label %2 and ret
+ ;
+} if labelRefCount %2 0
+
+// optimizing jumptables
+// Please note: to enable peephole 260.x you currently have to set
+// the environment variable SDCC_SJMP_JUMPTABLE
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+%3:
+} by {
+ ; Peephole 260.a used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+%3:
+} by {
+ ; Peephole 260.b used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+%3:
+} by {
+ ; Peephole 260.c used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+%3:
+} by {
+ ; Peephole 260.d used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+%3:
+} by {
+ ; Peephole 260.e used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+
+ ljmp %13
+%3:
+} by {
+ ; Peephole 260.f used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+
+ sjmp %13
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+
+ ljmp %13
+ ljmp %14
+%3:
+} by {
+ ; Peephole 260.g used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+
+ sjmp %13
+ sjmp %14
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+
+ ljmp %13
+ ljmp %14
+ ljmp %15
+%3:
+} by {
+ ; Peephole 260.h used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+
+ sjmp %13
+ sjmp %14
+ sjmp %15
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+
+ ljmp %13
+ ljmp %14
+ ljmp %15
+ ljmp %16
+%3:
+} by {
+ ; Peephole 260.i used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+
+ sjmp %13
+ sjmp %14
+ sjmp %15
+ sjmp %16
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+
+ ljmp %13
+ ljmp %14
+ ljmp %15
+ ljmp %16
+ ljmp %17
+%3:
+} by {
+ ; Peephole 260.j used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+
+ sjmp %13
+ sjmp %14
+ sjmp %15
+ sjmp %16
+ sjmp %17
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+
+ ljmp %13
+ ljmp %14
+ ljmp %15
+ ljmp %16
+ ljmp %17
+ ljmp %18
+%3:
+} by {
+ ; Peephole 260.k used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+
+ sjmp %13
+ sjmp %14
+ sjmp %15
+ sjmp %16
+ sjmp %17
+ sjmp %18
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+
+ ljmp %13
+ ljmp %14
+ ljmp %15
+ ljmp %16
+ ljmp %17
+ ljmp %18
+ ljmp %19
+%3:
+} by {
+ ; Peephole 260.l used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+
+ sjmp %13
+ sjmp %14
+ sjmp %15
+ sjmp %16
+ sjmp %17
+ sjmp %18
+ sjmp %19
+%3:
+} if labelJTInRange
+
+// optimizing jumptables
+replace {
+ add a,%1
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ ljmp %5
+ ljmp %6
+ ljmp %7
+ ljmp %8
+ ljmp %9
+ ljmp %10
+ ljmp %11
+ ljmp %12
+
+ ljmp %13
+ ljmp %14
+ ljmp %15
+ ljmp %16
+ ljmp %17
+ ljmp %18
+ ljmp %19
+ ljmp %20
+%3:
+} by {
+ ; Peephole 260.m used sjmp in jumptable
+ mov dptr,#%2
+ jmp @a+dptr
+%2:
+ sjmp %5
+ sjmp %6
+ sjmp %7
+ sjmp %8
+ sjmp %9
+ sjmp %10
+ sjmp %11
+ sjmp %12
+
+ sjmp %13
+ sjmp %14
+ sjmp %15
+ sjmp %16
+ sjmp %17
+ sjmp %18
+ sjmp %19
+ sjmp %20
+%3:
+} if labelJTInRange
+
+// applies to: a = (a << 1) | (a >> 15);
+replace {
+ mov a,%1
+ rlc a
+ mov %1,a
+ mov a,%2
+ rlc a
+ mov %2,a
+ mov a,%1
+ mov acc.0,c
+ mov %1,a
+} by {
+ mov a,%1
+ rlc a
+ ; Peephole 261.a optimized left rol
+ xch a,%2
+ rlc a
+ xch a,%2
+ mov acc.0,c
+ mov %1,a
+}
+
+// applies to: a = (a << 15) | (a >> 1);
+replace {
+ mov a,%1
+ rrc a
+ mov %1,a
+ mov a,%2
+ rrc a
+ mov %2,a
+ mov a,%1
+ mov acc.7,c
+ mov %1,a
+} by {
+ mov a,%1
+ rrc a
+ ; Peephole 261.b optimized right rol
+ xch a,%2
+ rrc a
+ xch a,%2
+ mov acc.7,c
+ mov %1,a
+}
+
+replace {
+ cpl c
+ cpl c
} by {
- ; Peephole 239 used a instead of acc
- mov r%1,a
+ ; Peephole 262 removed redundant cpl c
}
+
+replace {
+ mov %1,#%2
+ inc %1
+ inc %1
+ inc %1
+} by {
+ ; Peephole 263.a optimized loading const
+ mov %1,#(%2 + 3)
+} if notVolatile(%1)
+
+replace {
+ mov %1,#%2
+ inc %1
+ inc %1
+} by {
+ ; Peephole 263.b optimized loading const
+ mov %1,#(%2 + 2)
+} if notVolatile(%1)
+
+replace {
+ mov %1,#%2
+ inc %1
+} by {
+ ; Peephole 263.c optimized loading const
+ mov %1,#(%2 + 1)
+} if notVolatile(%1)
+
+
+replace {
+ clr a
+ cjne %1,%2,%3
+ inc a
+%3:
+ jz %4
+} by {
+ ; Peephole 264 jump optimization (acc not set)
+ cjne %1,%2,%4
+%3:
+} if labelRefCount(%3 1), labelRefCountChange(%3 -1)
+
+
+replace {
+ mov %1,c
+ cpl %1
+} by {
+ ; Peephole 265 optimized mov/cpl sequence (carry differs)
+ cpl c
+ mov %1,c
+} if notVolatile(%1)
+
+replace {
+ mov %1,c
+ jb %1,%2
+} by {
+ ; Peephole 266.a optimized mov/jump sequence
+ mov %1,c
+ jc %2
+} if notVolatile(%1)
+
+replace {
+ mov %1,c
+ jnb %1,%2
+} by {
+ ; Peephole 266.b optimized mov/jump sequence
+ mov %1,c
+ jnc %2
+} if notVolatile(%1)
+
+replace {
+ jnc %1
+ setb %2
+ sjmp %3
+%1:
+ clr %2
+%3:
+} by {
+ ; Peephole 267.a optimized mov bit sequence
+ mov %2,c
+%1:
+%3:
+} if labelRefCount(%1 1), labelRefCountChange(%1 -1), labelRefCountChange(%3 -1)
+
+replace {
+ jc %1
+ clr %2
+ sjmp %3
+%1:
+ setb %2
+%3:
+} by {
+ ; Peephole 267.b optimized mov bit sequence
+ mov %2,c
+%1:
+%3:
+} if labelRefCount(%1 1), labelRefCountChange(%1 -1), labelRefCountChange(%3 -1)
+
+replace {
+ mov %1,c
+ mov %1,c
+} by {
+ ; Peephole 268 removed redundant mov
+ mov %1,c
+} if notVolatile(%1)
+
+replace {
+ mov %1,c
+ mov c,%1
+} by {
+ ; Peephole 269 removed redundant mov
+ mov %1,c
+} if notVolatile(%1)
+
+//accessing struct/array on stack
+//replace {
+// add a,#%1
+// add a,#%2
+//} by {
+// ; Peephole 270 removed redundant add (carry might differ, bug 2736282)
+// add a,#%1+%2
+//}
+
+replace {
+ jz %1
+ mov %2,%4
+ sjmp %3
+%1:
+ mov %2,#0x00
+%3:
+} by {
+ jz %1
+ ; Peephole 271 optimized ternary operation (acc different)
+ mov a,%4
+%1:
+ mov %2,a
+%3:
+} if operandsNotRelated('a' 'dptr' %2), labelRefCount(%1 1), labelRefCountChange(%3 -1)
+
+
+replace restart {
+ pop ar%1
+} by {
+ ; Peephole 300 pop ar%1 removed
+} if deadMove(%1)
+
+replace {
+ mov r%1,%2
+} by {
+ ; Peephole 301 mov r%1,%2 removed
+} if notVolatile(%2), deadMove(%1)
+
+
+// applies to: void test( char c ) { if( c ) func1(); else func2(); }
+replace {
+ lcall %1
+ ret
+} by {
+ ; Peephole 400.a replaced lcall/ret with ljmp
+ ljmp %1
+}
+
+// applies to: void test( char c ) { if( c ) func1(); else func2(); }
+replace {
+ lcall %1
+%2:
+ ret
+} by {
+ ; Peephole 400.b replaced lcall/ret with ljmp
+ ljmp %1
+ ;
+} if labelRefCount %2 0
+
+// applies to f.e. scott-bool1.c
+replace {
+ lcall %1
+%2:
+ ret
+} by {
+ ; Peephole 400.c replaced lcall with ljmp
+ ljmp %1
+%2:
+ ret
+}
+
+// for programs less than 2k
+replace {
+ lcall %1
+} by {
+ ; Peephole 400.d replaced lcall with acall
+ acall %1
+} if useAcallAjmp
+
+// for programs less than 2k
+replace {
+ ljmp %1
+} by {
+ ; Peephole 400.e replaced ljmp with ajmp
+ ajmp %1
+} if useAcallAjmp
+
+
+// should be one of the last peepholes
+replace{
+%1:
+} by {
+ ; Peephole 500 removed redundant label %1
+} if labelRefCount(%1 0)
projects / fw / sdcc / blobdiff