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glasm: Fix register allocation when moving immediate on GLASM

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This commit is contained in:
ReinUsesLisp 2021-05-10 03:47:31 -03:00 • committed by ameerj
parent 0839e46736
commit deda89372f
3 changed files with 92 additions and 45 deletions
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77
src/shader_recompiler/backend/glasm/reg_alloc.cpp
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@ -21,10 +21,40 @@ Register RegAlloc::LongDefine(IR::Inst& inst) {
return Define(inst, true);
}
Value RegAlloc::Peek(const IR::Value& value) {
return value.IsImmediate() ? MakeImm(value) : PeekInst(*value.InstRecursive());
}
Value RegAlloc::Consume(const IR::Value& value) {
if (!value.IsImmediate()) {
return Consume(*value.InstRecursive());
return value.IsImmediate() ? MakeImm(value) : ConsumeInst(*value.InstRecursive());
}
void RegAlloc::Unref(IR::Inst& inst) {
inst.DestructiveRemoveUsage();
if (!inst.HasUses()) {
Free(inst.Definition<Id>());
}
}
Register RegAlloc::AllocReg() {
Register ret;
ret.type = Type::Register;
ret.id = Alloc(false);
return ret;
}
Register RegAlloc::AllocLongReg() {
Register ret;
ret.type = Type::Register;
ret.id = Alloc(true);
return ret;
}
void RegAlloc::FreeReg(Register reg) {
Free(reg.id);
}
Value RegAlloc::MakeImm(const IR::Value& value) {
Value ret;
switch (value.Type()) {
case IR::Type::U1:
@ -53,45 +83,26 @@ Value RegAlloc::Consume(const IR::Value& value) {
return ret;
}
Register RegAlloc::AllocReg() {
Register ret;
ret.type = Type::Register;
ret.id = Alloc(false);
return ret;
}
Register RegAlloc::AllocLongReg() {
Register ret;
ret.type = Type::Register;
ret.id = Alloc(true);
return ret;
}
void RegAlloc::FreeReg(Register reg) {
Free(reg.id);
}
Register RegAlloc::Define(IR::Inst& inst, bool is_long) {
const Id id{Alloc(is_long)};
inst.SetDefinition<Id>(id);
Register ret;
ret.type = Type::Register;
ret.id = id;
return ret;
inst.SetDefinition<Id>(Alloc(is_long));
return Register{PeekInst(inst)};
}
Value RegAlloc::Consume(IR::Inst& inst) {
const Id id{inst.Definition<Id>()};
inst.DestructiveRemoveUsage();
if (!inst.HasUses()) {
Free(id);
}
Value RegAlloc::PeekInst(IR::Inst& inst) {
Value ret;
ret.type = Type::Register;
ret.id = id;
ret.id = inst.Definition<Id>();
return ret;
}
Value RegAlloc::ConsumeInst(IR::Inst& inst) {
inst.DestructiveRemoveUsage();
if (!inst.HasUses()) {
Free(inst.Definition<Id>());
}
return PeekInst(inst);
}
Id RegAlloc::Alloc(bool is_long) {
size_t& num_regs{is_long ? num_used_long_registers : num_used_registers};
std::bitset<NUM_REGS>& use{is_long ? long_register_use : register_use};