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[Bug tree-optimization/52285] [4.7 Regression] libgcrypt _gcry_burn_stack slowdown
- 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: Thu, 16 Feb 2012 18:50:27 +0000
- Subject: [Bug tree-optimization/52285] [4.7 Regression] libgcrypt _gcry_burn_stack slowdown
- Auto-submitted: auto-generated
- References: <bug-52285-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52285
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-16 18:50:27 UTC ---
Created attachment 26681
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26681
gcc47-pr52285.patch
Patch to ignore clobber stmts in tailc/tailr passes. This turns this testcase
back into a loop, for which the bad IVOPT decision matters.