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Mainline Regression in gcc.target/i386/pr32268.c
- From: "Kaveh R. GHAZI" <ghazi at caip dot rutgers dot edu>
- To: ubizjak at gmail dot com
- Cc: gcc at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
- Date: Sat, 16 Feb 2008 12:50:12 -0500 (EST)
- Subject: Mainline Regression in gcc.target/i386/pr32268.c
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;
}