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[Bug rtl-optimization/34490] [4.3 Regression] r128833 causes miscompilation of glibc clock_gettime.c
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Dec 2007 00:13:42 -0000
- Subject: [Bug rtl-optimization/34490] [4.3 Regression] r128833 causes miscompilation of glibc clock_gettime.c
- References: <bug-34490-87@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from jakub at gcc dot gnu dot org 2007-12-18 00:13 -------
Subject: Bug 34490
Author: jakub
Date: Tue Dec 18 00:13:29 2007
New Revision: 131023
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=131023
Log:
PR rtl-optimization/34490
* simplify-rtx.c (simplify_const_relational_operation): If !sign,
don't reduce mmin/mmax using num_sign_bit_copies.
* gcc.c-torture/execute/20071216-1.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/20071216-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/simplify-rtx.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34490