1 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/20020523-2.c b/gcc/testsuite/gcc.target/i386/20020523-2.c
new file mode 100644
index 00000000000..ebe8bb8f5cd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/20020523-2.c
@@ -0,0 +1,53 @@
+/* PR target/6753
+   This testcase was miscompiled because sse_mov?fcc_const0*
+   patterns were missing earlyclobber.  */
+/* { dg-do run { target i?86-*-* x86_64-*-* } } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-march=pentium3 -msse -ffast-math -O2" } */
+
+#include "i386-cpuid.h"
+extern void abort (void);
+extern void exit (int);
+
+float one = 1.f;
+
+void bar (float f)
+{
+  if (__builtin_memcmp (&one, &f, sizeof (float)))
+    abort ();
+}
+
+float foo (void)
+{
+  return 1.f;
+}
+
+typedef struct
+{
+  float t;
+} T;
+
+void bail_if_no_sse (void)
+{
+  unsigned int edx;
+  /* See if capabilities include SSE (25th bit; 26 for SSE2).  */
+  edx = i386_cpuid();
+  if (!(edx & bit_SSE))
+    exit (0);
+}
+
+int main (void)
+{
+  int i;
+  T x[1];
+
+  bail_if_no_sse ();
+  for (i = 0; i < 1; i++)
+    {
+      x[i].t = foo ();
+      x[i].t = 0.f > x[i].t ? 0.f : x[i].t;
+      bar (x[i].t);
+    }
+
+  exit (0);
+}