[DirectX] add maybe_unused to IsVolatile in legalizeMemCpy.

[farzonl]

fixes a warning when building release.

[llvmbot]

@llvm/pr-subscribers-backend-directx

Author: Farzon Lotfi (farzonl)

Changes

fixes a warning when building release.

---

Full diff: https://github.com/llvm/llvm-project/pull/143040.diff

1 Files Affected:

• (modified) llvm/lib/Target/DirectX/DXILLegalizePass.cpp (+1-1)

diff --git a/llvm/lib/Target/DirectX/DXILLegalizePass.cpp b/llvm/lib/Target/DirectX/DXILLegalizePass.cpp
index 79b0cf261ba31..85a4631119b9e 100644
--- a/llvm/lib/Target/DirectX/DXILLegalizePass.cpp
+++ b/llvm/lib/Target/DirectX/DXILLegalizePass.cpp
@@ -470,7 +470,7 @@ static void legalizeMemCpy(Instruction &I,
   Value *Src = CI->getArgOperand(1);
   ConstantInt *Length = dyn_cast<ConstantInt>(CI->getArgOperand(2));
   assert(Length && "Expected Length to be a ConstantInt");
-  ConstantInt *IsVolatile = dyn_cast<ConstantInt>(CI->getArgOperand(3));
+  [[maybe_unused]] ConstantInt *IsVolatile = dyn_cast<ConstantInt>(CI->getArgOperand(3));
   assert(IsVolatile && "Expected IsVolatile to be a ConstantInt");
   assert(IsVolatile->getZExtValue() == 0 && "Expected IsVolatile to be false");
   emitMemcpyExpansion(Builder, Dst, Src, Length);

[github-actions]

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