[llvm] [NFC][AMDGPU] Remove redundant code in `AMDGPUSubtarget::getWavesPerEU` (PR #155201)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Shilei Tian (shiltian)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/155201.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp (+1-5) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp b/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
index d095fc6cf9549..7668294e2ff30 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
@@ -209,11 +209,7 @@ std::pair<unsigned, unsigned>
 AMDGPUSubtarget::getWavesPerEU(const Function &F) const {
   // Default/requested minimum/maximum flat work group sizes.
   std::pair<unsigned, unsigned> FlatWorkGroupSizes = getFlatWorkGroupSizes(F);
-  // Minimum number of bytes allocated in the LDS.
-  unsigned LDSBytes = AMDGPU::getIntegerPairAttribute(F, "amdgpu-lds-size",
-                                                      {0, UINT32_MAX}, true)
-                          .first;
-  return getWavesPerEU(FlatWorkGroupSizes, LDSBytes, F);
+  return getWavesPerEU(F, FlatWorkGroupSizes);
 }
 
 std::pair<unsigned, unsigned> AMDGPUSubtarget::getWavesPerEU(

``````````

</details>


https://github.com/llvm/llvm-project/pull/155201