mov %1,a
}
-replace {
+replace restart {
// saving 1 byte, loosing 1 cycle but maybe allowing peephole 3.b to start
mov %1,#0x00
mov %2,#0x00
clr a
mov %1,a
mov %2,a
- ; Peephole 3.h changed mov %3,#0x00 to %3,a
+ ; Peephole 3.h changed mov %3,#0x00 to ...,a
mov %3,a
}
mov %1,a
mov %2,a
mov %3,a
- ; Peephole 3.i changed mov %4,#0x00 to %4,a
+ ; Peephole 3.i changed mov %4,#0x00 to ...,a
mov %4,a
}
mov %2,a
mov %3,a
mov %4,a
- ; Peephole 3.j changed mov %5,#0x00 to %5,a
+ ; Peephole 3.j changed mov %5,#0x00 to ...,a
mov %5,a
}
mov %3,a
mov %4,a
mov %5,a
- ; Peephole 3.k changed mov %6,#0x00 to %6,a
+ ; Peephole 3.k changed mov %6,#0x00 to ...,a
mov %6,a
}
mov a,%1
movx @dptr,a
} by {
- ; Peephole 100 removed redundant mov
mov %1,a
mov dptr,#%2
+ ; Peephole 100 removed redundant mov
movx @dptr,a
} if notVolatile %1
mov a,%1
movx @dptr,a
} by {
- ; Peephole 101 removed redundant mov
mov a,%1
movx @dptr,a
inc dptr
+ ; Peephole 101 removed redundant mov
movx @dptr,a
} if notVolatile %1
mov %1,a
mov a,%1
} by {
- ; Peephole 105 removed redundant mov
mov %1,a
+; Peephole 105 removed redundant mov
} if notVolatile %1
replace {
clr c
mov a,%1
} by {
- ; Peephole 106 removed redundant mov
mov %1,a
clr c
+ ; Peephole 106 removed redundant mov
} if notVolatile %1
replace {
} by {
; Peephole 107 removed redundant ljmp
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
jc %1
sjmp %3
%2:
} by {
- ; Peephole 115.b jump optimization
mov %1,a
+ ; Peephole 115.b jump optimization
jz %3
%2:
-} labelRefCountChange(%2 -1)
+} if labelRefCountChange(%2 -1)
replace {
clr a
mov a,%2
add a,#0xff - %1
mov %3,c
-}
+} if operandsLiteral(%1)
replace {
clr c
mov a,%2
add a,#0xff - %1
jnc %5
-}
+} if operandsLiteral(%1)
replace {
clr c
mov a,%2
add a,#0xff - %1
jc %5
-}
+} if operandsLiteral(%1)
replace {
clr c
mov a,#0x100 - %2
add a,%1
mov %3,c
-} if operandsNotRelated('0x00' %2)
+} if operandsNotRelated('0x00' %2), operandsLiteral(%2)
replace {
clr c
mov a,#0x100 - %2
add a,%1
jc %5
-} if operandsNotRelated('0x00' %2)
+} if operandsNotRelated('0x00' %2), operandsLiteral(%2)
replace {
clr c
mov a,#0x100 - %2
add a,%1
jnc %5
-} if operandsNotRelated('0x00' %2)
+} if operandsNotRelated('0x00' %2), operandsLiteral(%2)
replace {
mov r%4,%2
mov @r%4,ar%3
} by {
- ; Peephole 133 removed redundant moves
mov r%1,%2
+ ; Peephole 133 removed redundant moves
inc @r%1
mov ar%3,@r%1
} if notVolatile
mov r%4,%2
mov @r%4,ar%3
} by {
- ; Peephole 134 removed redundant moves
mov r%1,%2
+ ; Peephole 134 removed redundant moves
dec @r%1
mov ar%3,@r%1
} if notVolatile
mov a,r%2
orl a,r%1
} by {
- ; Peephole 135 removed redundant mov
mov r%1,a
+ ; Peephole 135 removed redundant mov
orl a,r%2
}
mov dph,%3
mov a,%1
} by {
- ; Peephole 136 removed redundant moves
mov %1,a
mov dpl,%2
mov dph,%3
+ ; Peephole 136 removed redundant move
} if notVolatile %1
// WTF? Doesn't look sensible to me...
mov r%1,a
}
+// applies to genlshOne
+replace {
+ mov ar%1,@%2
+ mov a,r%1
+ add a,acc
+ mov r%1,a
+} by {
+ ; 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
add a,%2
}
-// what are #147-#149 for?
+// 147: Fix compiler output to comply with 8051 instruction set.
replace {
orl r%1,a
} by {
- ; Peephole 147 changed target address mode r%1 to ar%1
+ ; Peephole 147.a changed target address mode r%1 to ar%1
orl ar%1,a
}
replace {
anl r%1,a
} by {
- ; Peephole 148 changed target address mode r%1 to ar%1
+ ; Peephole 147.b changed target address mode r%1 to ar%1
anl ar%1,a
}
replace {
xrl r%1,a
} by {
- ; Peephole 149 changed target address mode r%1 to ar%1
+ ; Peephole 147.c changed target address mode r%1 to ar%1
xrl ar%1,a
}
ret
}
+// peephole 213.a might revert this
replace {
mov %1,#%2
xrl %1,#0x80
; Peephole 160.a removed sjmp by inverse jump logic
jc %2
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
jc %1
; Peephole 160.b removed sjmp by inverse jump logic
jnc %2
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
jnz %1
; Peephole 160.c removed sjmp by inverse jump logic
jz %2
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
jz %1
; Peephole 160.d removed sjmp by inverse jump logic
jnz %2
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
jnb %3,%1
; Peephole 160.e removed sjmp by inverse jump logic
jb %3,%2
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
jb %3,%1
; Peephole 160.f removed sjmp by inverse jump logic
jnb %3,%2
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
mov %1,%2
mov %3,%1
mov %2,%1
} by {
- ; Peephole 166 removed redundant mov
mov %1,%2
mov %3,%1
+ ; Peephole 166 removed redundant mov
} if notVolatile %1 %2
replace {
; Peephole 168 jump optimization
jb %1,%3
%2:
-} labelRefCountChange(%2 -1)
+} if labelRefCountChange(%2 -1)
replace {
jb %1,%2
; Peephole 169 jump optimization
jnb %1,%3
%2:
-} labelRefCountChange(%2 -1)
+} if labelRefCountChange(%2 -1)
replace {
clr a
subb a,#0x01
mov %2,a
} by {
- ; Peephole 174.a optimized decrement (acc not set to %2, flags undefined)
mov r%1,%2
+ ; Peephole 174.a optimized decrement (acc not set to %2, flags undefined)
dec %2
}
add a,#0x01
mov %2,a
} by {
- ; Peephole 174.b optimized increment (acc not set to %2, flags undefined)
mov r%1,%2
+ ; Peephole 174.b optimized increment (acc not set to %2, flags undefined)
inc %2
}
mov %1,%2
mov %2,%1
} by {
- ; Peephole 177.a removed redundant mov
mov %1,%2
+ ; Peephole 177.a removed redundant mov
} if notVolatile %1 %2
// applies to f.e. scott-add.asm (--model-large)
mov r%1,a
mov a,ar%1
} by {
- ; Peephole 177.b removed redundant mov
mov r%1,a
+ ; Peephole 177.b removed redundant mov
}
// applies to f.e. bug-408972.c
mov %3,%4
mov %2,%1
} by {
- ; Peephole 177.d removed redundant move
mov %1,%2
mov %3,%4
-} if notVolatile(%1 %2),operandsNotRelated(%1 %3)
+ ; Peephole 177.d removed redundant move
+} if notVolatile(%1 %2),operandsNotRelated(%1 %2 %3)
// applies to f.e. bug-607243.c
// also check notVolatile %3, as it will return FALSE if it's @r%1
movx @dptr,a
mov dptr,%1
} by {
- ; Peephole 180.a removed redundant mov to dptr
mov dptr,%1
mov a,%2
movx @dptr,a
+ ; Peephole 180.a removed redundant mov to dptr
}
// volatile xdata char t; t=0x01; t=0x03; t=0x01;
movx @dptr,a
mov dptr,%1
} by {
- ; Peephole 180.b removed redundant mov to dptr
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
anl %1,#%3
} by {
; Peephole 183 avoided anl during execution
- anl %1,#(%2 & %3)
+ anl %1,#(%2&%3)
}
replace {
mov %1,a
} if notVolatile %1
-replace {
+// char indexed access to: long code table[] = {4,3,2,1};
+replace restart {
add a,#%1
mov dpl,a
clr a
mov %4,a
inc dptr
clr a
+ movc a,@a+dptr
} by {
; Peephole 186.a optimized movc sequence
+ mov b,a
mov dptr,#%1
- mov b,acc
movc a,@a+dptr
mov %2,a
- mov acc,b
inc dptr
+ mov a,b
movc a,@a+dptr
mov %3,a
- mov acc,b
inc dptr
+ mov a,b
movc a,@a+dptr
mov %4,a
- mov acc,b
inc dptr
+ mov a,b
+ movc a,@a+dptr
}
-replace {
+// char indexed access to: void* code table[] = {4,3,2,1};
+replace restart {
add a,#%1
mov dpl,a
clr a
mov %3,a
inc dptr
clr a
+ movc a,@a+dptr
} by {
; Peephole 186.b optimized movc sequence
+ mov b,a
mov dptr,#%1
- mov b,acc
movc a,@a+dptr
mov %2,a
- mov acc,b
inc dptr
+ mov a,b
movc a,@a+dptr
mov %3,a
- mov acc,b
inc dptr
+ mov a,b
+ movc a,@a+dptr
}
-replace {
+// char indexed access to: int code table[] = {4,3,2,1};
+replace restart {
add a,#%1
mov dpl,a
clr a
mov %2,a
inc dptr
clr a
+ movc a,@a+dptr
} by {
; Peephole 186.c optimized movc sequence
+ mov %2,a
mov dptr,#%1
- mov b,acc
movc a,@a+dptr
- mov %2,a
- mov acc,b
+ xch a,%2
inc dptr
+ movc a,@a+dptr
}
// char indexed access to: char code table[] = {4,3,2,1};
mul ab
add a,#%2
mov dpl,a
- mov a,b
- addc a,#(%2 >> 8)
+ mov a,#(%2 >> 8)
+ addc a,b
mov dph,a
clr a
movc a,@a+dptr
mov a,#0x0f
anl a,%1
} by {
- ; Peephole 189 removed redundant mov and anl
anl a,#0x0f
mov %1,a
+ ; Peephole 189 removed redundant mov and anl
} if notVolatile %1
// rules 190 & 191 need to be in order
lcall __gptrput
mov a,%1
} by {
- ; Peephole 190 removed redundant mov
mov a,%1
lcall __gptrput
+ ; Peephole 190 removed redundant mov
} if notVolatile %1
replace {
mov b,%4
mov a,%1
} by {
- ; Peephole 191 removed redundant mov
mov %1,a
mov dpl,%2
mov dph,%3
mov b,%4
+ ; Peephole 191 removed redundant mov
} if notVolatile %1
replace {
mov r%1,a
mov @r%2,ar%1
} by {
- ; Peephole 192 used a instead of ar%1 as source
mov r%1,a
+ ; Peephole 192 used a instead of ar%1 as source
mov @r%2,a
}
} by {
; Peephole 200.a removed redundant sjmp
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
sjmp %1
; Peephole 200.b removed redundant sjmp
%2:
%1:
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
push acc
inc r%1
}
+// reverts peephole 159? asx8051 cannot handle, too complex?
replace {
mov %1,#(( %2 >> 8 ) ^ 0x80)
} by {
mov a,%2
add a,%1
} by {
- ; Peephole 214 reduced some extra moves
mov %1,a
+ ; Peephole 214 reduced some extra moves
add a,%2
} if operandsNotSame
dec r%1
mov @r%1,a
} by {
- ; Peephole 216.a simplified clear (2bytes)
mov r%1,%2
clr a
+ ; Peephole 216.a simplified clear (2 bytes)
mov @r%1,a
inc r%1
mov @r%1,a
dec r%1
mov @r%1,a
} by {
- ; Peephole 216.b simplified clear (3bytes)
mov r%1,%2
clr a
+ ; Peephole 216.b simplified clear (3 bytes)
mov @r%1,a
inc r%1
mov @r%1,a
dec r%1
mov @r%1,a
} by {
- ; Peephole 216.c simplified clear (4bytes)
mov r%1,%2
clr a
+ ; Peephole 216.c simplified clear (4 bytes)
mov @r%1,a
inc r%1
mov @r%1,a
clr a
movx @dptr,a
} by {
- ; Peephole 219.b removed redundant clear
clr a
movx @dptr,a
mov dptr,%1
movx @dptr,a
mov dptr,%2
+ ; Peephole 219.b removed redundant clear
movx @dptr,a
}
mov dpl,%1
mov dph,%2
} by {
- ; Peephole 223.a removed redundant dph/dpl moves
mov %1,dpl
mov %2,dph
+ ; Peephole 223.a removed redundant dph/dpl moves
} if notVolatile %1 %2
replace {
mov dpl,%1
mov dph,(%1 + 1)
} by {
- ; Peephole 223.b removed redundant dph/dpl moves
mov %1,dpl
mov (%1 + 1),dph
+ ; Peephole 223.b removed redundant dph/dpl moves
} if notVolatile %1
replace {
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
+ ; Peephole 225 removed redundant move to acc
} if notVolatile %1
+replace {
+ clr a
+ movx @%1,a
+ inc %1
+ clr a
+} by {
+ clr a
+ movx @%1,a
+ inc %1
+ ; Peephole 226.a removed unnecessary clr
+}
+
replace {
clr a
movx @%1,a
inc %1
clr a
} by {
- ; Peephole 226 removed unnecessary clr
clr a
movx @%1,a
inc %1
movx @%1,a
inc %1
+ ; Peephole 226.b removed unnecessary clr
}
replace {
lcall __decdptr
movx @dptr,a
} by {
- ; Peephole 227.a replaced inefficient 32 bit clear
mov dptr,#%1
clr a
+ ; Peephole 227.a replaced inefficient 32 bit clear
movx @dptr,a
inc dptr
movx @dptr,a
mov a,#%2
movx @dptr,a
} by {
- ; Peephole 227.b replaced inefficient 32 constant
mov dptr,#%1
+ ; Peephole 227.b replaced inefficient 32 constant
mov a,#%2
movx @dptr,a
inc dptr
lcall __decdptr
movx @dptr,a
} by {
- ; Peephole 227.c replaced inefficient 16 bit clear
mov dptr,#%1
clr a
+ ; Peephole 227.c replaced inefficient 16 bit clear
movx @dptr,a
inc dptr
movx @dptr,a
mov a,#%2
movx @dptr,a
} by {
- ; Peephole 227.d replaced inefficient 16 bit constant
mov dptr,#%1
+ ; Peephole 227.d replaced inefficient 16 bit constant
mov a,#%2
movx @dptr,a
inc dptr
mov %3,%4
%1:
ret
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
replace {
sjmp %1
mov dph,%6
%1:
ret
-} labelRefCountChange(%1 -1)
+} if labelRefCountChange(%1 -1)
// applies to f.e. device/lib/log10f.c
replace {
addc a,%1
}
-// peepholes 241.a to 241.c and 241.d to 241.f need to be in order
+// peepholes 241.a to 241.d and 241.e to 241.h need to be in order
replace {
- cjne r%1,#%2,%3
- cjne r%4,#%5,%3
- cjne r%6,#%7,%3
- cjne r%8,#%9,%3
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ cjne r%6,#%7,%0
+ cjne r%8,#%9,%0
mov a,#0x01
- sjmp %10
-%3:
+ sjmp %1
+%0:
clr a
-%10:
+%1:
} by {
; Peephole 241.a optimized compare
clr a
- cjne r%1,#%2,%3
- cjne r%4,#%5,%3
- cjne r%6,#%7,%3
- cjne r%8,#%9,%3
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ cjne r%6,#%7,%0
+ cjne r%8,#%9,%0
inc a
-%3:
-%10:
-} labelRefCountChange(%10 -1)
+%0:
+%1:
+} if labelRefCountChange(%1 -1)
-// applies to f.e. time.c
+// applies to generic pointer compare
replace {
- cjne r%1,#%2,%3
- cjne r%4,#%5,%3
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ cjne r%6,#%7,%0
mov a,#0x01
- sjmp %6
-%3:
+ sjmp %1
+%0:
clr a
-%6:
+%1:
} by {
; Peephole 241.b optimized compare
clr a
- cjne r%1,#%2,%3
- cjne r%4,#%5,%3
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
+ cjne r%6,#%7,%0
inc a
-%3:
-%6:
-} labelRefCountChange(%6 -1)
+%0:
+%1:
+} if labelRefCountChange(%1 -1)
-// applies to f.e. malloc.c
+// applies to f.e. time.c
replace {
- cjne r%1,#%2,%3
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
mov a,#0x01
- sjmp %4
-%3:
+ sjmp %1
+%0:
clr a
-%4:
+%1:
} by {
; Peephole 241.c optimized compare
clr a
- cjne r%1,#%2,%3
+ cjne r%2,#%3,%0
+ cjne r%4,#%5,%0
inc a
-%3:
-%4:
-} labelRefCountChange(%4 -1)
+%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%1,#%2,%3
- inc r%1
- cjne @r%1,#%4,%3
- inc r%1
- cjne @r%1,#%5,%3
- inc r%1
- cjne @r%1,#%6,%3
+ 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 %7
-%3:
+ sjmp %2
+%1:
clr a
-%7:
+%2:
} by {
- ; Peephole 241.d optimized compare
+ ; Peephole 241.e optimized compare
clr a
- cjne @r%1,#%2,%3
- inc r%1
- cjne @r%1,#%4,%3
- inc r%1
- cjne @r%1,#%5,%3
- inc r%1
- cjne @r%1,#%6,%3
+ 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
-%3:
-%7:
-} labelRefCountChange(%7 -1)
+%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%1,#%2,%3
- inc r%1
- cjne @r%1,#%4,%3
+ cjne @r%0,#%3,%1
+ inc r%0
+ cjne @r%0,#%4,%1
mov a,#0x01
- sjmp %7
-%3:
+ sjmp %2
+%1:
clr a
-%7:
+%2:
} by {
- ; Peephole 241.e optimized compare
+ ; Peephole 241.g optimized compare
clr a
- cjne @r%1,#%2,%3
- inc r%1
- cjne @r%1,#%4,%3
+ cjne @r%0,#%3,%1
+ inc r%0
+ cjne @r%0,#%4,%1
inc a
-%3:
-%7:
-} labelRefCountChange(%7 -1)
+%1:
+%2:
+} if labelRefCountChange(%2 -1)
// applies to f.e. vprintf.asm (--stack-auto)
replace {
- cjne @r%1,#%2,%3
+ cjne @r%0,#%3,%1
mov a,#0x01
- sjmp %7
-%3:
+ sjmp %2
+%1:
clr a
-%7:
+%2:
} by {
- ; Peephole 241.f optimized compare
+ ; Peephole 241.h optimized compare
clr a
- cjne @r%1,#%2,%3
+ cjne @r%0,#%3,%1
inc a
-%3:
-%7:
-} labelRefCountChange(%7 -1)
+%1:
+%2:
+} if labelRefCountChange(%2 -1)
// applies to f.e. scott-bool1.c
replace {
%1:
jz %4
} by {
- ; Peephole 242.a avoided branch jnz to jz
jnz %1
mov %2,%3
+ ; Peephole 242.a avoided branch jnz to jz
jz %4
%1:
} if labelRefCount %1 1
%1:
jz %4
} by {
- ; Peephole 242.b avoided branch jnz to jz
jnz %1
mov %2,%3
orl a,%5
+ ; Peephole 242.b avoided branch jnz to jz
jz %4
%1:
} if labelRefCount %1 1
%1:
jz %4
} by {
- ; Peephole 242.c avoided branch jnz to jz
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
mov r%1,a
mov dpl,r%1
} by {
- ; Peephole 244.c loading dpl from a instead of r%1
mov r%1,a
+ ; Peephole 244.c loading dpl from a instead of r%1
mov dpl,a
}
mov r%1,a
mov dph,r%1
} by {
- ; Peephole 244.d loading dph from a instead of r%1
mov r%1,a
+ ; Peephole 244.d loading dph from a instead of r%1
mov dph,a
}
anl a,#%3
movx @dptr,a
} by {
- ; Peephole 246.a combined clr/clr
mov dptr,#%1
movx a,@dptr
+ ; Peephole 246.a combined clr/clr
anl a,#%2&%3
movx @dptr,a
} if notVolatile %1
orl a,#%3
movx @dptr,a
} by {
- ; Peephole 246.b combined set/set
mov dptr,#%1
movx a,@dptr
+ ; Peephole 246.b combined set/set
orl a,#%2|%3
movx @dptr,a
} if notVolatile %1
anl a,#%3
movx @dptr,a
} by {
- ; Peephole 246.c combined set/clr
mov dptr,#%1
movx a,@dptr
orl a,#%2
+ ; Peephole 246.c combined set/clr
anl a,#%3
movx @dptr,a
} if notVolatile %1
orl a,#%3
movx @dptr,a
} by {
- ; Peephole 246.d combined clr/set
mov dptr,#%1
movx a,@dptr
anl a,#%2
+ ; Peephole 246.d combined clr/set
orl a,#%3
movx @dptr,a
} if notVolatile %1
anl a,#%4
movx @dptr,a
} by {
- ; Peephole 246.e combined set/clr/clr
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
orl a,#%4
movx @dptr,a
} by {
- ; Peephole 246.f combined set/clr/set
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
anl a,#%4
movx @dptr,a
} by {
- ; Peephole 246.g combined clr/set/clr
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
orl a,#%4
movx @dptr,a
} by {
- ; Peephole 246.h combined clr/set/set
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
anl a,#%3
mov @r%5,a
} by {
- ; Peephole 247.a combined clr/clr
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
orl a,#%3
mov @r%5,a
} by {
- ; Peephole 247.b combined set/set
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
anl a,#%3
mov @r%5,a
} by {
- ; Peephole 247.c combined set/clr
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
orl a,#%3
mov @r%5,a
} by {
- ; Peephole 247.d combined clr/set
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
anl a,#%4
mov @r%5,a
} by {
- ; Peephole 247.e combined set/clr/clr
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
orl a,#%4
mov @r%5,a
} by {
- ; Peephole 247.f combined set/clr/set
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
anl a,#%4
mov @r%5,a
} by {
- ; Peephole 247.g combined clr/set/clr
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
orl a,#%4
mov @r%5,a
} by {
- ; Peephole 247.h combined clr/set/set
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
orl a,r%2
movx @dptr,a
} by {
- ; Peephole 248.a optimized or to xdata
mov dptr,%1
movx a,@dptr
mov r%2,a
+ ; Peephole 248.a optimized or to xdata
orl a,%3
movx @dptr,a
}
anl a,r%2
movx @dptr,a
} by {
- ; Peephole 248.b optimized and to xdata
mov dptr,%1
movx a,@dptr
mov r%2,a
+ ; Peephole 248.b optimized and to xdata
anl a,%3
movx @dptr,a
}
xrl a,r%2
movx @dptr,a
} by {
- ; Peephole 248.c optimized xor to xdata
mov dptr,%1
movx a,@dptr
mov r%2,a
+ ; Peephole 248.c optimized xor to xdata
xrl a,%3
movx @dptr,a
}
orl a,%5
movx @dptr,a
} by {
- ; Peephole 248.d optimized or/and/or to volatile xdata
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,%5
movx @dptr,a
} by {
- ; Peephole 248.e optimized and/or/and to volatile xdata
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
anl a,%4
movx @dptr,a
} by {
- ; Peephole 248.f optimized or/and to volatile xdata
mov dptr,%1
movx a,@dptr
+ ; Peephole 248.f optimized or/and to volatile xdata
orl a,%3
movx @dptr,a
movx a,@dptr
orl a,%4
movx @dptr,a
} by {
- ; Peephole 248.g optimized and/or to volatile xdata
mov dptr,%1
movx a,@dptr
+ ; Peephole 248.g optimized and/or to volatile xdata
anl a,%3
movx @dptr,a
movx a,@dptr
xrl a,%4
movx @dptr,a
} by {
- ; Peephole 248.h optimized xor/xor to volatile xdata
mov dptr,%1
movx a,@dptr
+ ; Peephole 248.h optimized xor/xor to volatile xdata
xrl a,%3
movx @dptr,a
movx a,@dptr
orl a,%5
movx @dptr,a
} by {
- ; Peephole 248.i optimized or/and/or to xdata bitfield
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
anl a,%5
movx @dptr,a
} by {
- ; Peephole 248.j optimized and/or/and to xdata bitfield
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
anl a,%4
movx @dptr,a
} by {
- ; Peephole 248.k optimized or/and to xdata bitfield
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
orl a,%4
movx @dptr,a
} by {
- ; Peephole 248.l optimized and/or to xdata bitfield
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
xrl a,%4
movx @dptr,a
} by {
- ; Peephole 248.m optimized xor/xor to xdata bitfield
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
mov a,%1
add a,acc
} by {
- ; Peephole 254 optimized left shift
mov a,%1
+ ; Peephole 254 optimized left shift
add a,%1
} if notVolatile %1
%2:
clr c
} by {
- ; Peephole 256.a removed redundant clr c
jc %1
%2:
+ ; Peephole 256.a removed redundant clr c
} if labelRefCount %2 0
// applies to f.e. logf.c
%2:
clr a
} by {
- ; Peephole 256.b removed redundant clr a
jnz %1
%2:
+ ; Peephole 256.b removed redundant clr a
} if labelRefCount %2 0
// applies to f.e. bug-905492.c
%2:
mov %3,#0x00
} by {
- ; Peephole 256.c loading %3 with zero from a
jnz %1
%2:
+ ; Peephole 256.c loading %3 with zero from a
mov %3,a
} if labelRefCount %2 0
mov %4,%5
mov %3,#0x00
} by {
- ; Peephole 256.d loading %3 with zero from a
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)
mov %6,%7
mov %3,#0x00
} by {
- ; Peephole 256.e loading %3 with zero from a
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)
mov %8,%9
mov %3,#0x00
} by {
- ; Peephole 256.f loading %2 with zero from a
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)
orl %1,#0x01
%3:
} by {
- ; Peephole 258.a optimized bitbanging
mov a,%1
+ ; Peephole 258.a optimized bitbanging
mov c,%2
addc a,%1
mov %1,a
orl ar%1,#0x01
%3:
} by {
- ; Peephole 258.b optimized bitbanging
mov a,r%1
+ ; Peephole 258.b optimized bitbanging
mov c,%2
addc a,r%1
mov r%1,a
%4:
%3:
-} labelRefCountChange(%3 -1)
+} if labelRefCountChange(%3 -1)
// in_byte>>=1; if(in_bit) in_byte|=0x80;
replace {
orl %1,#0x80
%3:
} by {
- ; Peephole 258.c optimized bitbanging
mov a,%1
+ ; Peephole 258.c optimized bitbanging
mov c,%2
rrc a
mov %1,a
orl ar%1,#0x80
%3:
} by {
- ; Peephole 258.d optimized bitbanging
mov a,r%1
+ ; Peephole 258.d optimized bitbanging
mov c,%2
rrc a
mov r%1,a
%4:
%3:
-} labelRefCountChange(%3 -1)
+} if labelRefCountChange(%3 -1)
// out_bit=out_byte&0x80; out_byte<<=1;
// helps f.e. writing data on a 3-wire (SPI) bus
add a,%1
mov %1,a
} by {
- ; Peephole 258.e optimized bitbanging
mov a,%1
+ ; Peephole 258.e optimized bitbanging
add a,%1
mov %2,c
mov %1,a
rrc a
mov %1,a
} by {
- ; Peephole 258.f optimized bitbanging
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
+// 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
+// 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:
+%2:
ret
} by {
sjmp %1
// applies to f.e. gets.c
replace {
ljmp %1
-%2:
+%2:
ret
} by {
ljmp %1
mov acc.0,c
mov %1,a
} by {
- ; Peephole 261.a optimized left rol
mov a,%1
rlc a
+ ; Peephole 261.a optimized left rol
xch a,%2
rlc a
xch a,%2
mov acc.7,c
mov %1,a
} by {
- ; Peephole 261.b optimized right rol
mov a,%1
rrc a
+ ; Peephole 261.b optimized right rol
xch a,%2
rrc a
xch a,%2
mov %1,a
}
+replace {
+ cpl c
+ cpl c
+} by {
+ ; 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)
+}
+
+replace {
+ mov %1,#%2
+ inc %1
+ inc %1
+} by {
+ ; Peephole 263.b optimized loading const
+ mov %1,#(%2 + 2)
+}
+
+replace {
+ mov %1,#%2
+ inc %1
+} by {
+ ; Peephole 263.c optimized loading const
+ mov %1,#(%2 + 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)
+
// should be one of the last peepholes
replace{
%1:
projects / fw / sdcc / blobdiff