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[Bug tree-optimization/79389] [7 Regression] 30% performance regression in SciMark2 MonteCarlo
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 24 Feb 2017 08:05:04 +0000
- Subject: [Bug tree-optimization/79389] [7 Regression] 30% performance regression in SciMark2 MonteCarlo
- Auto-submitted: auto-generated
- References: <bug-79389-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79389
--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 24 08:04:31 2017
New Revision: 245696
URL: https://gcc.gnu.org/viewcvs?rev=245696&root=gcc&view=rev
Log:
2017-02-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/79389
* gimple-ssa-split-paths.c (is_feasible_trace): Verify more
properly that a threading opportunity exists. Detect conditional
copy/constant propagation opportunities.
* gcc.dg/tree-ssa/split-path-10.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/split-path-10.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-ssa-split-paths.c
trunk/gcc/testsuite/ChangeLog