Author: Aiden Grossman
Date: 2026-03-21T20:50:03Z
New Revision: adcb17b47641a1afb1cc694e3ff363fb1cb2a288

URL: 
https://github.com/llvm/llvm-project/commit/adcb17b47641a1afb1cc694e3ff363fb1cb2a288
DIFF: 
https://github.com/llvm/llvm-project/commit/adcb17b47641a1afb1cc694e3ff363fb1cb2a288.diff

LOG: [Clang][HLSL] Fix -Wunused-variable

Inline the definition of a variable into an assertion given it has no
other users and no side effects.

Added: 
    

Modified: 
    clang/lib/CodeGen/CGHLSLBuiltins.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/CodeGen/CGHLSLBuiltins.cpp 
b/clang/lib/CodeGen/CGHLSLBuiltins.cpp
index 6aebc22f94f52..eabc2c9d29df8 100644
--- a/clang/lib/CodeGen/CGHLSLBuiltins.cpp
+++ b/clang/lib/CodeGen/CGHLSLBuiltins.cpp
@@ -1143,8 +1143,8 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned 
BuiltinID,
       auto *MatTy = QTy0->castAs<ConstantMatrixType>();
       unsigned Rows = MatTy->getNumRows();
       unsigned Cols = MatTy->getNumColumns();
-      unsigned N = QTy1->castAs<VectorType>()->getNumElements();
-      assert(N == Cols && "vector length must match matrix column count");
+      assert(QTy1->castAs<VectorType>()->getNumElements() == Cols &&
+             "vector length must match matrix column count");
       if (IsRowMajor)
         Op0 = MB.CreateRowMajorToColumnMajorTransform(Op0, Rows, Cols);
       return MB.CreateMatrixMultiply(Op0, Op1, Rows, Cols, 1, "hlsl.mul");


        
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