shader: link multiple compute helpers without synthetic return loops

src/graphics/shader/recompiler/ShaderRecompiler.h

@@ -8,6 +8,7 @@
 #include "graphics/shader/shader.h"
 
 #include <array>
+#include <bitset>
 #include <optional>
 #include <span>
 #include <vector>
@@ -47,16 +48,20 @@ struct ShaderSource {
 	struct Call {
 		uint32_t instruction;
 		std::array<IR::Value, 2> target;
+		std::bitset<128> preserved_registers;
+		uint64_t address = 0;
 	};
 	struct Linked {
+		struct Function { uint32_t offset; uint32_t size; };
 		std::vector<uint32_t> code;
 		Decoder::Program decoded;
+		std::vector<Function> functions;
 		std::vector<uint32_t> observed_function;
 	};
 	std::vector<uint32_t> code;
 	Decoder::Program decoded;
 	IR::ResourcePlan call_targets;
-	std::optional<Call> call;
+	std::vector<Call> calls;
 	std::optional<Linked> linked;
 	uint64_t revision = 0;
 	std::vector<std::pair<uint64_t, uint64_t>> reads;