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[Bug tree-optimization/63641] [5 Regression] Invalid shift leads to incorrect code on 32-bit system
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 25 Oct 2014 20:22:19 +0000
- Subject: [Bug tree-optimization/63641] [5 Regression] Invalid shift leads to incorrect code on 32-bit system
- Auto-submitted: auto-generated
- References: <bug-63641-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63641
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Oct 25 20:21:47 2014
New Revision: 216693
URL: https://gcc.gnu.org/viewcvs?rev=216693&root=gcc&view=rev
Log:
PR tree-optimization/63641
* tree-ssa-reassoc.c (optimize_range_tests_to_bit_test): Set high
to low + prec - 1 - clz (mask) instead of low + prec - clz (mask).
* gcc.c-torture/execute/pr63641.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr63641.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-reassoc.c