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[Bug tree-optimization/81588] [7/8 Regression] Wrong code at -O2
- 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: Tue, 01 Aug 2017 08:33:09 +0000
- Subject: [Bug tree-optimization/81588] [7/8 Regression] Wrong code at -O2
- Auto-submitted: auto-generated
- References: <bug-81588-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81588
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Aug 1 08:32:37 2017
New Revision: 250760
URL: https://gcc.gnu.org/viewcvs?rev=250760&root=gcc&view=rev
Log:
PR tree-optimization/81588
* tree-ssa-reassoc.c (optimize_range_tests_var_bound): If
ranges[i].in_p, invert comparison code ccode. For >/>=,
swap rhs1 and rhs2 and comparison code unconditionally,
for </<= don't do that. Don't swap rhs1/rhs2 again if
ranges[i].in_p, instead invert comparison code ccode if
opcode or oe->rank is BIT_IOR_EXPR.
* gcc.dg/tree-ssa/pr81588.c: New test.
* gcc.dg/pr81588.c: New test.
* gcc.c-torture/execute/pr81588.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr81588.c
trunk/gcc/testsuite/gcc.dg/pr81588.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr81588.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-reassoc.c