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glasm: Ensure reg alloc order across compilers on GLASM
Use a struct constructor to serialize register allocation arguments to ensure registers are allocated in the same order regardless of the compiler used. The A and B functions can be called in any order when passed as arguments to "foo": foo(A(), B()) But the order is guaranteed for curly-braced constructor calls in classes: Foo{A(), B()} Use this to get consistent behavior.
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@ -128,24 +128,27 @@ auto Arg(EmitContext& ctx, const IR::Value& arg) {
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}
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}
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}
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}
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template <auto func, bool is_first_arg_inst, typename... Args>
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template <auto func, bool is_first_arg_inst>
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void InvokeCall(EmitContext& ctx, IR::Inst* inst, Args&&... args) {
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struct InvokeCall {
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template <typename... Args>
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InvokeCall(EmitContext& ctx, IR::Inst* inst, Args&&... args) {
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if constexpr (is_first_arg_inst) {
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if constexpr (is_first_arg_inst) {
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func(ctx, *inst, args.Extract()...);
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func(ctx, *inst, args.Extract()...);
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} else {
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} else {
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func(ctx, args.Extract()...);
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func(ctx, args.Extract()...);
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}
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}
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}
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}
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};
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template <auto func, bool is_first_arg_inst, size_t... I>
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template <auto func, bool is_first_arg_inst, size_t... I>
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void Invoke(EmitContext& ctx, IR::Inst* inst, std::index_sequence<I...>) {
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void Invoke(EmitContext& ctx, IR::Inst* inst, std::index_sequence<I...>) {
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using Traits = FuncTraits<decltype(func)>;
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using Traits = FuncTraits<decltype(func)>;
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if constexpr (is_first_arg_inst) {
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if constexpr (is_first_arg_inst) {
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InvokeCall<func, is_first_arg_inst>(
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InvokeCall<func, is_first_arg_inst>{
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ctx, inst, Arg<typename Traits::template ArgType<I + 2>>(ctx, inst->Arg(I))...);
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ctx, inst, Arg<typename Traits::template ArgType<I + 2>>(ctx, inst->Arg(I))...};
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} else {
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} else {
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InvokeCall<func, is_first_arg_inst>(
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InvokeCall<func, is_first_arg_inst>{
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ctx, inst, Arg<typename Traits::template ArgType<I + 1>>(ctx, inst->Arg(I))...);
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ctx, inst, Arg<typename Traits::template ArgType<I + 1>>(ctx, inst->Arg(I))...};
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}
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}
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}
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}
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