[spirv] Fix build warning and missing lambda capture.

tools/clang/lib/SPIRV/SPIRVEmitter.cpp

@@ -7163,7 +7163,6 @@ SpirvInstruction *SPIRVEmitter::processIntrinsicMad(const CallExpr *callExpr) {
   // because we need to specifically decorate the Fma instruction with
   // NoContraction decoration.
   if (isFloatOrVecMatOfFloatType(argType)) {
-    const auto opcode = GLSLstd450::GLSLstd450Fma;
     auto *glslInstSet = spvBuilder.getGLSLExtInstSet();
     // For matrix cases, operate on each row of the matrix.
     if (isMxNMatrix(arg0->getType())) {
@@ -7174,15 +7173,15 @@ SpirvInstruction *SPIRVEmitter::processIntrinsicMad(const CallExpr *callExpr) {
             spvBuilder.createCompositeExtract(vecType, arg1Instr, {index});
         auto *arg2Row =
             spvBuilder.createCompositeExtract(vecType, arg2Instr, {index});
-        auto *fma = spvBuilder.createExtInst(vecType, glslInstSet, opcode,
-                                             {arg0Row, arg1Row, arg2Row});
+        auto *fma = spvBuilder.createExtInst(
+            vecType, glslInstSet, GLSLstd450Fma, {arg0Row, arg1Row, arg2Row});
         spvBuilder.decorateNoContraction(fma);
         return fma;
       };
       return processEachVectorInMatrix(arg0, arg0Instr, actOnEachVec);
     }
     // Non-matrix cases
-    auto *fma = spvBuilder.createExtInst(argType, glslInstSet, opcode,
+    auto *fma = spvBuilder.createExtInst(argType, glslInstSet, GLSLstd450Fma,
                                          {arg0Instr, arg1Instr, arg2Instr});
     spvBuilder.decorateNoContraction(fma);
     return fma;

tools/clang/lib/SPIRV/SpirvType.cpp

@@ -249,8 +249,10 @@ FunctionType::FunctionType(const SpirvType *ret,
       paramTypes(param.begin(), param.end()) {
   // Make sure
   assert(!isa<HybridType>(ret));
-  for (auto *paramType : param)
+  for (auto *paramType : param) {
+    (void)paramType;
     assert(!isa<HybridType>(paramType));
+  }
 }
 
 } // namespace spirv