tree 1a4ed589abd516a2b6679d734c3a09f7531a94f4
parent f7f12476f99aec2ca00966aabe78f2d74982d907
author Simon Pilgrim <llvm-dev@redking.me.uk> 1544903024 +0000
committer Simon Pilgrim <llvm-dev@redking.me.uk> 1544903024 +0000

[X86] Lower to SHLD/SHRD on slow machines for optsize

Use consistent rules for when to lower to SHLD/SHRD for slow machines - fixes a weird issue where funnel shift gets expanded but then X86ISelLowering's combineOr sees the optsize and combines to SHLD/SHRD, but now with the modulo amount guard......

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349285 91177308-0d34-0410-b5e6-96231b3b80d8