[llvm-branch-commits] [llvm] [AMDGPU] Handle direct loads to LDS in memory model (PR #142018)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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You can test this locally with the following command:
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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/Target/AMDGPU/SIMemoryLegalizer.cpp
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/AMDGPU/SIMemoryLegalizer.cpp b/llvm/lib/Target/AMDGPU/SIMemoryLegalizer.cpp
index 7624bcfe3..520112367 100644
--- a/llvm/lib/Target/AMDGPU/SIMemoryLegalizer.cpp
+++ b/llvm/lib/Target/AMDGPU/SIMemoryLegalizer.cpp
@@ -1155,9 +1155,9 @@ bool SIGfx6CacheControl::insertWait(MachineBasicBlock::iterator &MI,
   }
 
   // Conservatively wait for vmcnt(0) to ensure that LDS operations and direct
-  // LDS loads from global memory cannot be reordered with respect to each other.
-  // This waitcnt can be safely optimized to wait for a higher vmcnt based on
-  // the number of outstanding direct LDS loads.
+  // LDS loads from global memory cannot be reordered with respect to each
+  // other. This waitcnt can be safely optimized to wait for a higher vmcnt
+  // based on the number of outstanding direct LDS loads.
   if (DirectLDSWait) {
     unsigned WaitCntImmediate = AMDGPU::encodeWaitcnt(
         IV, 0, getExpcntBitMask(IV), getLgkmcntBitMask(IV));

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https://github.com/llvm/llvm-project/pull/142018