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shader: Intrusively store in a block if it's sealed or not

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This commit is contained in:
ReinUsesLisp 2021-04-21 04:58:23 -03:00 committed by ameerj
parent eed6da55b8
commit 23182fa59c
2 changed files with 11 additions and 3 deletions
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9
src/shader_recompiler/frontend/ir/basic_block.h
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@ -107,6 +107,13 @@ public:
return ssa_reg_values[RegIndex(reg)];
}
void SsaSeal() noexcept {
is_ssa_sealed = true;
}
[[nodiscard]] bool IsSsaSealed() const noexcept {
return is_ssa_sealed;
}
[[nodiscard]] bool empty() const {
return instructions.empty();
}
@ -190,6 +197,8 @@ private:
/// Intrusively store the value of a register in the block.
std::array<Value, NUM_REGS> ssa_reg_values;
/// Intrusively store if the block is sealed in the SSA pass.
bool is_ssa_sealed{false};
/// Intrusively stored host definition of this block.
u32 definition{};

5
src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp
View file

@ -195,7 +195,7 @@ public:
case Status::Start: {
if (const IR::Value& def = current_def.Def(block, variable); !def.IsEmpty()) {
stack.back().result = def;
} else if (!sealed_blocks.contains(block)) {
} else if (!block->IsSsaSealed()) {
// Incomplete CFG
IR::Inst* phi{&*block->PrependNewInst(block->begin(), IR::Opcode::Phi)};
phi->SetFlags(IR::TypeOf(UndefOpcode(variable)));
@ -251,7 +251,7 @@ public:
std::visit([&](auto& variable) { AddPhiOperands(variable, *phi, block); }, variant);
}
}
sealed_blocks.insert(block);
block->SsaSeal();
}
private:
@ -297,7 +297,6 @@ private:
return same;
}
boost::container::flat_set<IR::Block*> sealed_blocks;
boost::container::flat_map<IR::Block*, boost::container::flat_map<Variant, IR::Inst*>>
incomplete_phis;
DefTable current_def;