Merge pull request #1103 from KhronosGroup/fix-1100

MSL: Cleanup temporary use with emit_uninitialized_temporary.

Author: HansKristian-Work

spirv_glsl.cpp

@@ -5285,7 +5285,6 @@ void CompilerGLSL::emit_glsl_op(uint32_t result_type, uint32_t id, uint32_t eop,
 
 	case GLSLstd450ModfStruct:
 	{
-		forced_temporaries.insert(id);
 		auto &type = get<SPIRType>(result_type);
 		emit_uninitialized_temporary_expression(result_type, id);
 		statement(to_expression(id), ".", to_member_name(type, 0), " = ", "modf(", to_expression(args[0]), ", ",
@@ -5425,7 +5424,6 @@ void CompilerGLSL::emit_glsl_op(uint32_t result_type, uint32_t id, uint32_t eop,
 
 	case GLSLstd450FrexpStruct:
 	{
-		forced_temporaries.insert(id);
 		auto &type = get<SPIRType>(result_type);
 		emit_uninitialized_temporary_expression(result_type, id);
 		statement(to_expression(id), ".", to_member_name(type, 0), " = ", "frexp(", to_expression(args[0]), ", ",
@@ -8533,7 +8531,6 @@ void CompilerGLSL::emit_instruction(const Instruction &instruction)
 		uint32_t result_id = ops[1];
 		uint32_t op0 = ops[2];
 		uint32_t op1 = ops[3];
-		forced_temporaries.insert(result_id);
 		auto &type = get<SPIRType>(result_type);
 		emit_uninitialized_temporary_expression(result_type, result_id);
 		const char *op = opcode == OpUMulExtended ? "umulExtended" : "imulExtended";

spirv_msl.cpp

@@ -4649,10 +4649,8 @@ void CompilerMSL::emit_instruction(const Instruction &instruction)
 		uint32_t result_id = ops[1];
 		uint32_t op0 = ops[2];
 		uint32_t op1 = ops[3];
-		forced_temporaries.insert(result_id);
 		auto &type = get<SPIRType>(result_type);
-		statement(variable_decl(type, to_name(result_id)), ";");
-		set<SPIRExpression>(result_id, to_name(result_id), result_type, true);
+		emit_uninitialized_temporary_expression(result_type, result_id);
 
 		auto &res_type = get<SPIRType>(type.member_types[1]);
 		if (opcode == OpIAddCarry)
@@ -4681,10 +4679,8 @@ void CompilerMSL::emit_instruction(const Instruction &instruction)
 		uint32_t result_id = ops[1];
 		uint32_t op0 = ops[2];
 		uint32_t op1 = ops[3];
-		forced_temporaries.insert(result_id);
 		auto &type = get<SPIRType>(result_type);
-		statement(variable_decl(type, to_name(result_id)), ";");
-		set<SPIRExpression>(result_id, to_name(result_id), result_type, true);
+		emit_uninitialized_temporary_expression(result_type, result_id);
 
 		statement(to_expression(result_id), ".", to_member_name(type, 0), " = ", to_enclosed_expression(op0), " * ",
 		          to_enclosed_expression(op1), ";");
@@ -4966,8 +4962,6 @@ void CompilerMSL::emit_atomic_func_op(uint32_t result_type, uint32_t result_id,
                                       uint32_t mem_order_2, bool has_mem_order_2, uint32_t obj, uint32_t op1,
                                       bool op1_is_pointer, bool op1_is_literal, uint32_t op2)
 {
-	forced_temporaries.insert(result_id);
-
 	string exp = string(op) + "(";
 
 	auto &type = get_pointee_type(expression_type(obj));
@@ -5006,12 +5000,11 @@ void CompilerMSL::emit_atomic_func_op(uint32_t result_type, uint32_t result_id,
 		// the CAS loop, otherwise it will loop infinitely, with the comparison test always failing.
 		// The function updates the comparitor value from the memory value, so the additional
 		// comparison test evaluates the memory value against the expected value.
-		statement(variable_decl(type, to_name(result_id)), ";");
+		emit_uninitialized_temporary_expression(result_type, result_id);
 		statement("do");
 		begin_scope();
 		statement(to_name(result_id), " = ", to_expression(op1), ";");
 		end_scope_decl(join("while (!", exp, " && ", to_name(result_id), " == ", to_enclosed_expression(op1), ")"));
-		set<SPIRExpression>(result_id, to_name(result_id), result_type, true);
 	}
 	else
 	{