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[Bug tree-optimization/71016] [6/7 Regression] Redundant sign extension with conditional __builtin_clzl
- 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: Mon, 02 Jan 2017 16:56:02 +0000
- Subject: [Bug tree-optimization/71016] [6/7 Regression] Redundant sign extension with conditional __builtin_clzl
- Auto-submitted: auto-generated
- References: <bug-71016-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71016
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40439
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40439&action=edit
gcc7-pr71016.patch
Actually, it is (sometimes) beneficial even for library calls. Untested patch.