[llvm] [AMDGPU] fix build error unused-var (PR #115199)

[Gang Chen via llvm-commits]

https://github.com/cmc-rep created https://github.com/llvm/llvm-project/pull/115199

None

>From 26b65f639fa415bda58f4a76ef20dcf895a8ffe6 Mon Sep 17 00:00:00 2001
From: gangc <gangc at amd.com>
Date: Wed, 6 Nov 2024 11:29:35 -0800
Subject: [PATCH] [AMDGPU] fix build error unused-var

---
 llvm/lib/Target/AMDGPU/AMDGPUMachineFunction.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Target/AMDGPU/AMDGPUMachineFunction.cpp b/llvm/lib/Target/AMDGPU/AMDGPUMachineFunction.cpp
index f52476464e05e6..ac11b11ef97ae5 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUMachineFunction.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUMachineFunction.cpp
@@ -103,7 +103,7 @@ unsigned AMDGPUMachineFunction::allocateLDSGlobal(const DataLayout &DL,
 
   unsigned Offset;
   if (GV.getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS) {
-    if (TargetExtType *TTy = AMDGPU::isNamedBarrier(GV)) {
+    if (AMDGPU::isNamedBarrier(GV)) {
       std::optional<unsigned> BarAddr = getLDSAbsoluteAddress(GV);
       if (!BarAddr)
         llvm_unreachable("named barrier should have an assigned address");