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[Bug tree-optimization/69196] [5/6 Regression] code size regression with jump threading at -O2
- From: "vogt at linux dot vnet.ibm.com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 02 Mar 2016 07:45:29 +0000
- Subject: [Bug tree-optimization/69196] [5/6 Regression] code size regression with jump threading at -O2
- Auto-submitted: auto-generated
- References: <bug-69196-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69196
Dominik Vogt <vogt at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vogt at linux dot vnet.ibm.com
--- Comment #15 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
The new test fails on s390x:
.../build/gcc/xgcc -B.../build/gcc/
.../gcc/testsuite/gcc.dg/tree-ssa/pr69196-1.c -fno-diagnostics-show-caret
-fdiagnostics-color=never -O2 -fdump-tree-vrp1-details -S -m31 -o pr69196-1.s
PASS: gcc.dg/tree-ssa/pr69196-1.c (test for excess errors)
FAIL: gcc.dg/tree-ssa/pr69196-1.c scan-tree-dump vrp1 "FSM did not thread
around loop and would copy too many statements"
(same with -m64 instead of -m31).