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[Bug target/48077] [Code Improvement] Poor expansion of multiply on powerpc64-linux
- From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 11 Mar 2011 19:22:20 +0000
- Subject: [Bug target/48077] [Code Improvement] Poor expansion of multiply on powerpc64-linux
- Auto-submitted: auto-generated
- References: <bug-48077-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48077
William J. Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc64-linux, others |powerpc64-linux
Component|rtl-optimization |target
Summary|[Code Improvement] Use |[Code Improvement] Poor
|multiplication by magic |expansion of multiply on
|number for integer division |powerpc64-linux
|by constant |
--- Comment #3 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2011-03-11 19:22:06 UTC ---
Changing this to a target issue. Confirmed that gcc is producing the correct
magic number multiply, which survives till final assembly output, when the poor
expansion takes place.