re PR target/22576 (ICE with simple factorial program compiled with -ffast-math on gcc 4.0.2)

2005-08-26  Uros Bizjak  <uros@kss-loka.si>

	* gcc.target/i386/builtin-apply-mmx.c: New test.

	PR target/22576
	* gcc.target/i386/pr22576.c: New test.

	PR target/22585
	* gcc.target/i386/pr22585.c: New test.

	PR target/23268
	* gcc.target/i386/pr23268.c: New test.

From-SVN: r104656

gcc/testsuite/ChangeLog

 2005-09-26  Uros Bizjak  <uros@kss-loka.si>
 
+	* gcc.target/i386/builtin-apply-mmx.c: New test.
+
+	PR target/22576
+	* gcc.target/i386/pr22576.c: New test.
+
+	PR target/22585
+	* gcc.target/i386/pr22585.c: New test.
+
+	PR target/23268
+	* gcc.target/i386/pr23268.c: New test.
+
 	PR middle-end/23831
 	* gcc.dg/vect/pr23831.c: New test.
 

gcc/testsuite/gcc.target/i386/builtin-apply-mmx.c

+/* __builtin_apply_args () and __builtin_return () built-in functions does
+   not function properly when -mmmx is used in compile flags.
+   __builtin_apply_args () saves all registers that pass arguments to a
+   function, including %mm0-%mm3, to a memory block, and __builtin_return ()
+   restores %mm0, from a return memory block, as it can be used as a
+   function return register.  Unfortunatelly, when MMX registers are touched,
+   i387 FPU switches to MMX mode, and no FP operation is possible until emms
+   instruction is issued.  */
+
+/* This test case is adapted from gcc.dg/builtin-apply4.c.  */
+ 
+/* { dg-do run { xfail "*-*-*" } } */
+/* { dg-options "-O2 -mmmx" } */
+
+#include "../../gcc.dg/i386-cpuid.h"
+
+extern void abort (void);
+
+double
+foo (double arg)
+{
+  if (arg != 116.0)
+    abort ();
+
+  return arg + 1.0;
+}
+
+inline double
+bar (double arg)
+{
+  foo (arg);
+  __builtin_return (__builtin_apply ((void (*)()) foo,
+				     __builtin_apply_args (), 16));
+}
+
+int
+main (int argc, char **argv)
+{
+  unsigned long cpu_facilities;
+
+  cpu_facilities = i386_cpuid ();
+
+  if (!(cpu_facilities & bit_MMX))
+    /* If host has no MMX support, pass.  */
+    return 0;
+
+  if (bar (116.0) != 117.0)
+    abort ();
+
+  return 0;
+}

gcc/testsuite/gcc.target/i386/pr22576.c

+/* PR target/22576 */
+/* Testcase reduced by Volker Reichelt */
+/* { dg-do compile } */
+/* { dg-options "-ffast-math" } */
+
+int
+foo (long double d)
+{
+  return d == 0;
+}

gcc/testsuite/gcc.target/i386/pr22585.c

+/* PR target/22585 */
+/* Testcase reduced by Volker Reichelt */
+/* { dg-do compile } */
+/* { dg-options "-march=i386 -O -ffast-math" } */
+
+int
+foo (long double d, int i)
+{
+  if (d == (long double) i)
+    return 1;
+}

gcc/testsuite/gcc.target/i386/pr23268.c

+/* PR target/23268 */
+/* Testcase reduced by Andrew Pinski */
+/* { dg-do compile } */
+/* { dg-options "-O1 -ffast-math" } */
+
+int
+f (float x)
+{
+  int a, b;
+  a = __builtin_log (2.f);
+  b = __builtin_lrint (x);
+  return (a + b);
+}