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[Bug tree-optimization/57326] Piecewise folding of operations on PHI nodes
- 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, 12 Aug 2016 12:58:47 +0000
- Subject: [Bug tree-optimization/57326] Piecewise folding of operations on PHI nodes
- Authentication-results: sourceware.org; auth=none
- Auto-submitted: auto-generated
- References: <bug-57326-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57326
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |7.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Aug 12 12:58:15 2016
New Revision: 239414
URL: https://gcc.gnu.org/viewcvs?rev=239414&root=gcc&view=rev
Log:
2016-08-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/57326
* tree-ssa-pre.c (fully_constant_expression): Handle simplification
returning an SSA name.
(phi_translate_1): When fully_constant_expression returns a NAME
make sure we have a leader for it.
* gcc.dg/tree-ssa/ssa-pre-32.c: New testcase.
* gcc.dg/tree-ssa/loadpre14.c: Adjust.
* gcc.dg/tree-ssa/pr35287.c: Likewise.
* gcc.target/i386/pr45685.c: Likewise.
* gcc.dg/tree-ssa/predcom-1.c: Disable PRE.
* gcc.dg/tree-ssa/predcom-2.c: Likewise.
* gcc.dg/tree-ssa/predcom-3.c: Likewise.
* gcc.dg/tree-ssa/ssa-sink-10.c: Likewise.
* gfortran.dg/pr34163.f90: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-32.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/tree-ssa/loadpre14.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr35287.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/predcom-1.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-10.c
trunk/gcc/testsuite/gcc.target/i386/pr45685.c
trunk/gcc/testsuite/gfortran.dg/pr34163.f90
trunk/gcc/tree-ssa-pre.c