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

[Shilei Tian via llvm-commits]

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

None

>From 4035b8f30f9ce74bb9ba7ebb457a8002f7d96bee Mon Sep 17 00:00:00 2001
From: Shilei Tian <i at tianshilei.me>
Date: Mon, 25 Aug 2025 00:05:13 -0400
Subject: [PATCH] [NFC][AMDGPU] Remove redundant code in
 `AMDGPUSubtarget::getWavesPerEU`

---
 llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

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(