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glasm: Rework control flow introducing a syntax list

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This commit regresses VertexA shaders, their transformation pass has to
be adapted to the new control flow.
This commit is contained in:
ReinUsesLisp 2021-05-14 00:40:54 -03:00 • committed by ameerj
parent 7ff5851608
commit d54d7de40e
33 changed files with 437 additions and 505 deletions
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41
src/shader_recompiler/backend/glasm/emit_glasm.cpp
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@ -117,8 +117,6 @@ auto Arg(EmitContext& ctx, const IR::Value& arg) {
return Identity<const IR::Value&>{arg};
} else if constexpr (std::is_same_v<ArgType, u32>) {
return Identity{arg.U32()};
} else if constexpr (std::is_same_v<ArgType, IR::Block*>) {
return Identity{arg.Label()};
} else if constexpr (std::is_same_v<ArgType, IR::Attribute>) {
return Identity{arg.Attribute()};
} else if constexpr (std::is_same_v<ArgType, IR::Patch>) {
@ -177,6 +175,39 @@ void EmitInst(EmitContext& ctx, IR::Inst* inst) {
throw LogicError("Invalid opcode {}", inst->GetOpcode());
}
void EmitCode(EmitContext& ctx, const IR::Program& program) {
const auto eval{
[&](const IR::U1& cond) { return ScalarS32{ctx.reg_alloc.Consume(IR::Value{cond})}; }};
for (const IR::AbstractSyntaxNode& node : program.syntax_list) {
switch (node.type) {
case IR::AbstractSyntaxNode::Type::Block:
for (IR::Inst& inst : node.block->Instructions()) {
EmitInst(ctx, &inst);
}
break;
case IR::AbstractSyntaxNode::Type::If:
ctx.Add("MOV.S.CC RC,{};IF NE.x;", eval(node.if_node.cond));
break;
case IR::AbstractSyntaxNode::Type::EndIf:
ctx.Add("ENDIF;");
break;
case IR::AbstractSyntaxNode::Type::Loop:
ctx.Add("REP;");
break;
case IR::AbstractSyntaxNode::Type::Repeat:
ctx.Add("MOV.S.CC RC,{};BRK NE.x;ENDREP;", eval(node.repeat.cond));
break;
case IR::AbstractSyntaxNode::Type::Break:
ctx.Add("MOV.S.CC RC,{};BRK NE.x;", eval(node.repeat.cond));
break;
case IR::AbstractSyntaxNode::Type::Return:
case IR::AbstractSyntaxNode::Type::Unreachable:
ctx.Add("RET;");
break;
}
}
}
void SetupOptions(std::string& header, Info info) {
if (info.uses_int64_bit_atomics) {
header += "OPTION NV_shader_atomic_int64;";
@ -201,11 +232,7 @@ void SetupOptions(std::string& header, Info info) {
std::string EmitGLASM(const Profile&, IR::Program& program, Bindings&) {
EmitContext ctx{program};
for (IR::Block* const block : program.blocks) {
for (IR::Inst& inst : block->Instructions()) {
EmitInst(ctx, &inst);
}
}
EmitCode(ctx, program);
std::string header = "!!NVcp5.0\n"
"OPTION NV_internal;";
SetupOptions(header, program.info);