[AMDGPU] fix build error unused-var

[cmc-rep]

No description provided.

[llvmbot]

@llvm/pr-subscribers-backend-amdgpu

Author: Gang Chen (cmc-rep)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/115199.diff

1 Files Affected:

• (modified) llvm/lib/Target/AMDGPU/AMDGPUMachineFunction.cpp (+1-1)

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");