re PR target/12598 (Invalid size optimization on volatile memory reference)

	PR target/12598
	* gcc.dg/torture/cris-volatile-1.c: New test.

From-SVN: r72520

gcc/testsuite/ChangeLog

+2003-10-15  Hans-Peter Nilsson  <hp@axis.com>
+
+	PR target/12598
+	* gcc.dg/torture/cris-volatile-1.c: New test.
+
 2003-10-14  Roger Sayle  <roger@eyesopen.com>
 
 	PR optimization/9325

gcc/testsuite/gcc.dg/torture/cris-volatile-1.c

+/* Copyright (C) 2003  Free Software Foundation.
+   Check that size-optimizations for move insns (specifically peephole
+   optimizations) aren't applied to volatile objects in the CRIS port.
+   Origin: Hans-Peter Nilsson.  */
+/* { dg-do compile { target cris-*-* } } */
+/* { dg-final { scan-assembler-not {movu\...\[} } } */
+/* { dg-final { scan-assembler-not {move\.[^d].\[} } } */
+/* { dg-final { scan-assembler-not {and\.[^d].\[} } } */
+/* { dg-final { scan-assembler-not {or\.[^d].\[} } } */
+
+static const unsigned long c = 0x0000FF00;
+unsigned long
+a1 (void)
+{
+  unsigned long m;
+  m = *(volatile unsigned long*) 0xb00000c8;
+  m &= c;
+  return m;
+}
+extern volatile unsigned long xx;
+unsigned long
+a2 (void)
+{
+  unsigned long m;
+  m = xx;
+  m &= c;
+  return m;
+}
+extern volatile unsigned long yy[];
+unsigned long
+a3 (void)
+{
+  unsigned long m;
+  m = yy[3];
+  m &= 0xfe00;
+  return m;
+}
+unsigned long
+ac1 (void)
+{
+  unsigned long m;
+  m = *(volatile unsigned long*) 0xb00000c8;
+  m &= 0xfe00;
+  return m;
+}
+extern volatile unsigned long xx;
+unsigned long
+ac2 (void)
+{
+  unsigned long m;
+  m = xx;
+  m &= 0xfe00;
+  return m;
+}
+extern volatile unsigned long yy[];
+unsigned long
+ac3 (void)
+{
+  unsigned long m;
+  m = yy[3];
+  m &= 0xfe00;
+  return m;
+}
+extern volatile unsigned long yy[];
+unsigned long
+oc3 (void)
+{
+  unsigned long m;
+  m = yy[3];
+  m |= ~0xf;
+  return m;
+}