[llvm] [AMDGPU] Optimize rotate instruction selection patterns (PR #143551)

[via llvm-commits]

github-actions[bot] wrote:

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions h,cpp -- llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.h llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.h llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
index 6e74ea56b..db13dcc5e 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
@@ -2046,14 +2046,9 @@ AMDGPULegalizerInfo::AMDGPULegalizerInfo(const GCNSubtarget &ST_,
     .clampScalar(0, S32, S64)
     .lower();
 
-  getActionDefinitionsBuilder(G_ROTR)
-    .legalFor({S32})
-    .scalarize(0)
-    .lower();
+  getActionDefinitionsBuilder(G_ROTR).legalFor({S32}).scalarize(0).lower();
 
-  getActionDefinitionsBuilder(G_ROTL)
-    .scalarize(0)
-    .lower();
+  getActionDefinitionsBuilder(G_ROTL).scalarize(0).lower();
 
   // TODO: Only Try to form v2s16 with legal packed instructions.
   getActionDefinitionsBuilder(G_FSHR)

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https://github.com/llvm/llvm-project/pull/143551