[spirv] Require source location in createEndPrimitive.

tools/clang/include/clang/SPIRV/SpirvBuilder.h

@@ -411,7 +411,7 @@ public:
   void createEmitVertex(SourceLocation loc = {});
 
   /// \brief Creates an OpEndPrimitive instruction.
-  void createEndPrimitive(SourceLocation loc = {});
+  void createEndPrimitive(SourceLocation);
 
   /// \brief Creates an OpArrayLength instruction.
   SpirvArrayLength *createArrayLength(QualType resultType, SourceLocation loc,

tools/clang/lib/SPIRV/SpirvEmitter.cpp

@@ -3516,7 +3516,7 @@ SpirvEmitter::processStreamOutputAppend(const CXXMemberCallExpr *expr) {
 SpirvInstruction *
 SpirvEmitter::processStreamOutputRestart(const CXXMemberCallExpr *expr) {
   // TODO: handle multiple stream-output objects
-  spvBuilder.createEndPrimitive();
+  spvBuilder.createEndPrimitive(expr->getExprLoc());
   return 0;
 }