[all-commits] [llvm/llvm-project] b4c660: [VectorCombine][X86] Add test showing foldShuffleO...
Simon Pilgrim via All-commits
all-commits at lists.llvm.org
Tue Apr 23 03:17:54 PDT 2024
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: b4c6607add8bba778b0a278ce7d069c057219eed
https://github.com/llvm/llvm-project/commit/b4c6607add8bba778b0a278ce7d069c057219eed
Author: Simon Pilgrim <llvm-dev at redking.me.uk>
Date: 2024-04-23 (Tue, 23 Apr 2024)
Changed paths:
M llvm/test/Transforms/VectorCombine/X86/shuffle-of-shuffles.ll
Log Message:
-----------
[VectorCombine][X86] Add test showing foldShuffleOfShuffles folding shuffles that would be better separate
On AVX+ targets a broadcast load can be treated as free.
Commit: a9e87304a3da9ef8ab0f9e035b0c480f8dd4c017
https://github.com/llvm/llvm-project/commit/a9e87304a3da9ef8ab0f9e035b0c480f8dd4c017
Author: Simon Pilgrim <llvm-dev at redking.me.uk>
Date: 2024-04-23 (Tue, 23 Apr 2024)
Changed paths:
A llvm/test/Analysis/CostModel/X86/load-broadcast.ll
Log Message:
-----------
[CostModel][X86] Add costs test coverage for broadcast loads
Broadcast shuffles can be free is fed from a one-use load
Commit: f89f670d92b5726fc61bf8252a6ecc273086c501
https://github.com/llvm/llvm-project/commit/f89f670d92b5726fc61bf8252a6ecc273086c501
Author: Simon Pilgrim <llvm-dev at redking.me.uk>
Date: 2024-04-23 (Tue, 23 Apr 2024)
Changed paths:
M llvm/lib/Target/X86/X86TargetTransformInfo.cpp
M llvm/test/Analysis/CostModel/X86/load-broadcast.ll
Log Message:
-----------
[CostModel][X86] Broadcast shuffles can be free if they are from a one-use load
AVX1+ can handle 32/64-bit broadcast loads, AVX2+ can handle all broadcast loads (we should be able to improve isLegalBroadcastLoad to handle more of this type matching).
Compare: https://github.com/llvm/llvm-project/compare/132bf4aedd67...f89f670d92b5
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