test/tint/identifiers/underscore/prefix/lower/parameter.wgsl.expected.ir.msl - dawn - Git at Google

 #include <metal_stdlib>
 using namespace metal;

 void f(int _a) {
   int const b = _a;
 }
	#include <metal_stdlib>
	using namespace metal;

	void f(int _a) {
	int const b = _a;
	}