tree 83e8aa707f91a11ab7db206404ca8e9d9c248313
parent a1ac7be38f4896ea57ff8866c8ff94eb5ac67a24
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......