[all-commits] [llvm/llvm-project] 2657fe: [CostModel][X86] Fix funnel shift check prefixes
Simon Pilgrim via All-commits
all-commits at lists.llvm.org
Thu Jul 22 12:10:41 PDT 2021
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 2657fe1721c301e11269f38763d5d835f186143d
https://github.com/llvm/llvm-project/commit/2657fe1721c301e11269f38763d5d835f186143d
Author: Simon Pilgrim <llvm-dev at redking.me.uk>
Date: 2021-07-22 (Thu, 22 Jul 2021)
Changed paths:
M llvm/test/Analysis/CostModel/X86/fshl.ll
M llvm/test/Analysis/CostModel/X86/fshr.ll
Log Message:
-----------
[CostModel][X86] Fix funnel shift check prefixes
We'd lost AVX1 test coverage due to bulldozer (XOP) trying to use the same check prefixes - we really need to fix the update script to avoid this!
Commit: 4185c5502c81285206ea35172411966c8bd8bd30
https://github.com/llvm/llvm-project/commit/4185c5502c81285206ea35172411966c8bd8bd30
Author: Simon Pilgrim <llvm-dev at redking.me.uk>
Date: 2021-07-22 (Thu, 22 Jul 2021)
Changed paths:
M llvm/lib/Target/X86/X86TargetTransformInfo.cpp
M llvm/test/Analysis/CostModel/X86/div.ll
M llvm/test/Analysis/CostModel/X86/fshl.ll
M llvm/test/Analysis/CostModel/X86/fshr.ll
M llvm/test/Analysis/CostModel/X86/rem.ll
M llvm/test/Analysis/CostModel/X86/vshift-ashr-cost-inseltpoison.ll
M llvm/test/Analysis/CostModel/X86/vshift-ashr-cost.ll
M llvm/test/Analysis/CostModel/X86/vshift-lshr-cost-inseltpoison.ll
M llvm/test/Analysis/CostModel/X86/vshift-lshr-cost.ll
M llvm/test/Analysis/CostModel/X86/vshift-shl-cost-inseltpoison.ll
M llvm/test/Analysis/CostModel/X86/vshift-shl-cost.ll
Log Message:
-----------
[CostModel][X86] Adjust shift SSE4 legalized costs based on llvm-mca reports.
Update shl/lshr/ashr costs based on the worst case costs from the script in D103695 - many of the 128-bit shifts (usually where integer multiplies aren't used) have similar behaviour to AVX1 so we can merge them.
Compare: https://github.com/llvm/llvm-project/compare/14e34a83b0d2...4185c5502c81
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