Mainline Regression in gcc.target/i386/pr32268.c

["Kaveh R. GHAZI" <ghazi@caip.rutgers.edu>]

Hi Uros,

This broke on x86_64 in the last day or so, I thought maybe you might know
what happened.  (You touched config/i386 FP stuff recently.)  I'm seeing a
regression in gcc.target/i386/pr32268.c as seen here:
http://gcc.gnu.org/ml/gcc-testresults/2008-02/msg01108.html

Right now the execute failures only appear with -fpic/-fPIC, however I
believe this is because inlining is masking the problem and allowing
things to get folded.  With -fpic/-fPIC the inlining is disabled and the
abort occurs.

You can trigger the bug in a regular pass by applying the following
noinline patch to the testcase.  Thoughts?

		Thanks,
		--Kaveh


diff -rup orig/egcc-SVN20080216/gcc/testsuite/gcc.target/i386/pr32268.c egcc-SVN20080216/gcc/testsuite/gcc.target/i386/pr32268.c
--- orig/egcc-SVN20080216/gcc/testsuite/gcc.target/i386/pr32268.c	2007-12-31 19:11:58.000000000 +0100
+++ egcc-SVN20080216/gcc/testsuite/gcc.target/i386/pr32268.c	2008-02-16 18:34:04.000000000 +0100
@@ -4,12 +4,14 @@

 extern void abort(void);

-int test_lt(__float128 x, __float128 y)
+int __attribute__ ((__noinline__))
+test_lt(__float128 x, __float128 y)
 {
   return x < y;
 }

-int test_gt (__float128 x, __float128 y)
+int __attribute__ ((__noinline__))
+test_gt (__float128 x, __float128 y)
 {
   return x > y;
 }