[PATCH][testsuite] Fix fold-eqandshift-1.c when int is not 32 bits

[Rask Ingemann Lambertsen]

   This fixes three testsuite failures on targets where int not 32 bits wide
by making the shift count relative to the width of int. Tested on
m32c-unknown-elf and x86_64-unknown-linux-gnu.

:ADDPATCH testsuite:

2007-08-28  Rask Ingemann Lambertsen  <rask@sygehus.dk>

	* gcc.dg/fold-eqandshift-1.c (INT_BITS): New.
	(test5)(test6): Use it.

Index: gcc/testsuite/gcc.dg/fold-eqandshift-1.c
===================================================================
--- gcc/testsuite/gcc.dg/fold-eqandshift-1.c	(revision 127806)
+++ gcc/testsuite/gcc.dg/fold-eqandshift-1.c	(working copy)
@@ -25,15 +25,25 @@
   return (d >> 3) & 4;
 }
 
+#if __INT_MAX__ == 32767
+#define INT_BITS 16
+#elif __INT_MAX__ == 2147483647
+#define INT_BITS 32
+#elif __INT_MAX__ == 9223372036854775807
+#define INT_BITS 64
+#else
+#error Please add support for your target here.
+#endif
+
 void test5(int e)
 {
-  if ((e >> 31) & 64)
+  if ((e >> (INT_BITS - 1)) & 64)
     foo();
 }
 
 void test6(unsigned int f)
 {
-  if ((f >> 31) & 64)
+  if ((f >> (INT_BITS - 1)) & 64)
     foo();
 }