forgot this in my last commit

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4635 4a8a32a2-be11-0410-ad9d-d568d2c75423

diff --git a/support/regression/tests/regtrack.c b/support/regression/tests/regtrack.c
new file mode 100644 (file)
index 0000000..30f2ce8
--- /dev/null
+++ b/support/regression/tests/regtrack.c
@@ -0,0 +1,118 @@
+/*
+   regtrack.c - testing register tracking
+*/
+
+#include <testfwk.h>
+#include <string.h>
+
+#ifndef SDCC_mcs51
+#  define __xdata
+#  define __pdata
+#  define __code
+#endif
+
+volatile unsigned char __xdata t;
+
+__pdata      unsigned char ta[]={0x00,0x01,0x01,0x02,0x01,0xfe,0x7f,0xfe,0xef};
+__code const unsigned char tb[]={0x00,0x01,0x01,0x02,0x01,0xfe,0x7f,0xfe,0xef};
+
+static void 
+foo(unsigned char which)
+{
+  unsigned char i,k; // should be allocated to registers
+
+  k = 2;
+  do
+  {
+      t = 0xab;
+      i = 2;
+      do
+      {
+        switch( which )
+        {
+          case 1: k = 1;
+                  t = 1;    // mov
+                  break;
+          case 2: t = 0x01; 
+                  t = 0x02; // inc
+                  break;
+          case 3: t = 0x05;
+                  t = 0x04;
+                  t = 0x03; // dec
+                  break;
+          case 4: t = ~0x04;
+                  t = 0x04; // cpl
+                  break;
+          case 5: t = 0x05<<1;
+                  t = 0x05; // rr
+                  break;
+          case 6: t = 0x06>>1;
+                  t = 0x06; // rl
+                  break;
+          case 7: t = 0x70;
+                  t = 0x07; // swap
+                  break;
+          case 0x08: 
+                  t = 0x0a;
+                  k = 0x02;
+                  t = 0x08; // xrl
+                  break;
+          case 0x09: 
+                  t = 0x0f;
+                  k = 0xf9;
+                  t = 0x09; // anl
+                  break;
+          case 0x0a: 
+                  t = 0x08;
+                  k = 0x02;
+                  t = 0x0a; // orl
+                  break;
+          case 0x0b: 
+                  t = 0x0b*7;
+                  k = 7;
+                  t = t/7;  // div
+                  break;
+          case 0x0c: 
+                  t = 4;
+                  k = 3;
+                  t = t*3;  // mul
+                  break;
+        }
+      } while(--i);
+  }while(--k);
+
+}
+
+
+
+
+void testRegTrack(void)
+{
+  ASSERT(0==(char)memcmp(ta, tb, sizeof tb));
+
+  foo(1); ASSERT(t==1);
+  foo(2); ASSERT(t==2);
+  foo(3); ASSERT(t==3);
+  foo(4); ASSERT(t==4);
+#if 1  
+  /* various checks for equality */
+  foo(5); ASSERT(!(t^5));
+  foo(6); ASSERT(0==(t^6));
+  foo(7); ASSERT(!(t-7));
+  foo(8); ASSERT(0==(t-8));
+  foo(9); ASSERT(0==((unsigned char)(t+(0x100-9))));
+  foo(10); ASSERT(!((unsigned char)(t+(0x100-10))));
+  foo(11); ASSERT(t>=11 && t<=11);
+  foo(12); ASSERT(t>11 && t<13);
+#else  
+  foo(5); ASSERT(t==5);
+  foo(6); ASSERT(t==6);
+  foo(7); ASSERT(t==7);
+  foo(8); ASSERT(t==8);
+  foo(9); ASSERT(t==9);
+  foo(10); ASSERT(t==10);
+  foo(11); ASSERT(t==11);
+  foo(12); ASSERT(t==12);
+#endif
+}
+