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glasm: Release phi node registers after they are no longer needed

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This commit is contained in:
ReinUsesLisp
2021-05-25 17:37:35 -03:00
committed by ameerj
parent 77ee733c3a
commit 48aafe0961
2 changed files with 54 additions and 38 deletions
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39
src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
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@ -17,10 +17,30 @@ namespace Shader::Backend::GLASM {
#define NotImplemented() throw NotImplementedException("GLASM instruction {}", __LINE__)
void EmitPhi(EmitContext& ctx, IR::Inst& inst) {
const size_t num_args{inst.NumArgs()};
static void DefinePhi(EmitContext& ctx, IR::Inst& phi) {
switch (phi.Arg(0).Type()) {
case IR::Type::U1:
case IR::Type::U32:
case IR::Type::F32:
ctx.reg_alloc.Define(phi);
break;
case IR::Type::U64:
case IR::Type::F64:
ctx.reg_alloc.LongDefine(phi);
break;
default:
throw NotImplementedException("Phi node type {}", phi.Type());
}
}
void EmitPhi(EmitContext& ctx, IR::Inst& phi) {
const size_t num_args{phi.NumArgs()};
for (size_t i = 0; i < num_args; ++i) {
ctx.reg_alloc.Consume(inst.Arg(i));
ctx.reg_alloc.Consume(phi.Arg(i));
}
if (!phi.Definition<Id>().is_valid) {
// The phi node wasn't forward defined
DefinePhi(ctx, phi);
}
}
@ -30,14 +50,19 @@ void EmitReference(EmitContext& ctx, const IR::Value& value) {
ctx.reg_alloc.Consume(value);
}
void EmitPhiMove(EmitContext& ctx, const IR::Value& phi, const IR::Value& value) {
const Register phi_reg{ctx.reg_alloc.Consume(phi)};
void EmitPhiMove(EmitContext& ctx, const IR::Value& phi_value, const IR::Value& value) {
IR::Inst& phi{RegAlloc::AliasInst(*phi_value.Inst())};
if (!phi.Definition<Id>().is_valid) {
// The phi node wasn't forward defined
DefinePhi(ctx, phi);
}
const Register phi_reg{ctx.reg_alloc.Consume(IR::Value{&phi})};
const Value eval_value{ctx.reg_alloc.Consume(value)};
if (phi == value) {
if (phi_reg == eval_value) {
return;
}
switch (phi.Inst()->Flags<IR::Type>()) {
switch (phi.Flags<IR::Type>()) {
case IR::Type::U1:
case IR::Type::U32:
case IR::Type::F32: