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shader: Read branch conditions from an instruction

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Fixes the identity removal pass.
This commit is contained in:
ReinUsesLisp 2021-05-18 02:04:22 -03:00 • committed by ameerj
parent 4bad415bca
commit 9bb3e008c9
12 changed files with 36 additions and 16 deletions
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2
src/shader_recompiler/backend/glasm/emit_glasm.cpp
View file

@ -200,7 +200,7 @@ void Precolor(EmitContext& ctx, const IR::Program& program) {
}
// Add reference to the phi node on the phi predecessor to avoid overwritting it
for (size_t i = 0; i < num_args; ++i) {
IR::IREmitter{*phi.PhiBlock(i)}.DummyReference(IR::Value{&phi});
IR::IREmitter{*phi.PhiBlock(i)}.Reference(IR::Value{&phi});
}
}
}

4
src/shader_recompiler/backend/glasm/emit_glasm_bitwise_conversion.cpp
View file

@ -22,6 +22,10 @@ void EmitIdentity(EmitContext&, IR::Inst& inst, const IR::Value& value) {
Alias(inst, value);
}
void EmitConditionRef(EmitContext&, IR::Inst& inst, const IR::Value& value) {
Alias(inst, value);
}
void EmitBitCastU16F16(EmitContext&, IR::Inst& inst, const IR::Value& value) {
Alias(inst, value);
}

3
src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
View file

@ -22,7 +22,8 @@ class EmitContext;
void EmitPhi(EmitContext& ctx, IR::Inst& inst);
void EmitVoid(EmitContext& ctx);
void EmitIdentity(EmitContext& ctx, IR::Inst& inst, const IR::Value& value);
void EmitDummyReference(EmitContext&);
void EmitConditionRef(EmitContext& ctx, IR::Inst& inst, const IR::Value& value);
void EmitReference(EmitContext&);
void EmitPhiMove(EmitContext& ctx, const IR::Value& phi, const IR::Value& value);
void EmitJoin(EmitContext& ctx);
void EmitDemoteToHelperInvocation(EmitContext& ctx);

2
src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
View file

@ -21,7 +21,7 @@ void EmitPhi(EmitContext&, IR::Inst&) {}
void EmitVoid(EmitContext&) {}
void EmitDummyReference(EmitContext&) {}
void EmitReference(EmitContext&) {}
void EmitPhiMove(EmitContext& ctx, const IR::Value& phi, const IR::Value& value) {
if (phi == value) {

1
src/shader_recompiler/backend/glasm/reg_alloc.cpp
View file

@ -139,6 +139,7 @@ void RegAlloc::Free(Id id) {
/*static*/ bool RegAlloc::IsAliased(const IR::Inst& inst) {
switch (inst.GetOpcode()) {
case IR::Opcode::Identity:
case IR::Opcode::ConditionRef:
case IR::Opcode::BitCastU16F16:
case IR::Opcode::BitCastU32F32:
case IR::Opcode::BitCastU64F64:

10
src/shader_recompiler/backend/spirv/emit_spirv.cpp
View file

@ -469,7 +469,15 @@ Id EmitIdentity(EmitContext& ctx, const IR::Value& value) {
return id;
}
void EmitDummyReference(EmitContext&) {}
Id EmitConditionRef(EmitContext& ctx, const IR::Value& value) {
const Id id{ctx.Def(value)};
if (!Sirit::ValidId(id)) {
throw NotImplementedException("Forward identity declaration");
}
return id;
}
void EmitReference(EmitContext&) {}
void EmitPhiMove(EmitContext&) {
throw LogicError("Unreachable instruction");

3
src/shader_recompiler/backend/spirv/emit_spirv_instructions.h
View file

@ -23,7 +23,8 @@ class EmitContext;
Id EmitPhi(EmitContext& ctx, IR::Inst* inst);
void EmitVoid(EmitContext& ctx);
Id EmitIdentity(EmitContext& ctx, const IR::Value& value);
void EmitDummyReference(EmitContext&);
Id EmitConditionRef(EmitContext& ctx, const IR::Value& value);
void EmitReference(EmitContext&);
void EmitPhiMove(EmitContext&);
void EmitJoin(EmitContext& ctx);
void EmitDemoteToHelperInvocation(EmitContext& ctx);