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glasm: Skip phi moves on undefined instructions

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This commit is contained in:
ReinUsesLisp 2021-05-26 15:41:53 -03:00 committed by ameerj
parent b9c8814ea9
commit 586c785366
2 changed files with 16 additions and 1 deletions
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4
src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
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@ -58,7 +58,9 @@ void EmitPhiMove(EmitContext& ctx, const IR::Value& phi_value, const IR::Value&
}
const Register phi_reg{ctx.reg_alloc.Consume(IR::Value{&phi})};
const Value eval_value{ctx.reg_alloc.Consume(value)};
if (!value.IsImmediate() && IR::IsUndef(RegAlloc::AliasInst(*value.Inst()))) {
return;
}
if (phi_reg == eval_value) {
return;
}

13
src/shader_recompiler/frontend/ir/value.h
View file

@ -395,4 +395,17 @@ inline f64 Value::F64() const {
return inst.GetOpcode() == Opcode::Phi;
}
[[nodiscard]] inline bool IsUndef(const Inst& inst) {
switch (inst.GetOpcode()) {
case Opcode::UndefU1:
case Opcode::UndefU8:
case Opcode::UndefU16:
case Opcode::UndefU32:
case Opcode::UndefU64:
return true;
default:
return false;
}
}
} // namespace Shader::IR