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[Bug middle-end/81719] Range-based for loop on short fixed size array generates long unrolled loop
- 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: Tue, 08 Aug 2017 12:51:53 +0000
- Subject: [Bug middle-end/81719] Range-based for loop on short fixed size array generates long unrolled loop
- Auto-submitted: auto-generated
- References: <bug-81719-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81719
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Aug 8 12:51:20 2017
New Revision: 250954
URL: https://gcc.gnu.org/viewcvs?rev=250954&root=gcc&view=rev
Log:
2017-08-08 Richard Biener <rguenther@suse.de>
PR middle-end/81719
* tree-ssa-loop-niter.c: Include tree-dfa.h.
(expand_simple_operations): Also look through ADDR_EXPRs with
MEM_REF bases treating them as POINTER_PLUS_EXPR.
* g++.dg/tree-ssa/pr81719.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/tree-ssa/pr81719.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-loop-niter.c