mirrors/dynarmic
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

backend/rv64: Implement Identity

Browse source
This commit is contained in:
Yang Liu 2024-02-17 14:38:31 +08:00 committed by Merry
parent 1de237bf24
commit b485553ed8
3 changed files with 22 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
src/dynarmic/backend/riscv64/emit_riscv64.cpp
View file

@ -29,6 +29,12 @@ void EmitIR(biscuit::Assembler&, EmitContext&, IR::Inst*) {
template<> template<>
void EmitIR<IR::Opcode::Void>(biscuit::Assembler&, EmitContext&, IR::Inst*) {} void EmitIR<IR::Opcode::Void>(biscuit::Assembler&, EmitContext&, IR::Inst*) {}
template<>
void EmitIR<IR::Opcode::Identity>(biscuit::Assembler&, EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
ctx.reg_alloc.DefineAsExisting(inst, args[0]);
}
template<> template<>
void EmitIR<IR::Opcode::A32GetRegister>(biscuit::Assembler& as, EmitContext& ctx, IR::Inst* inst); void EmitIR<IR::Opcode::A32GetRegister>(biscuit::Assembler& as, EmitContext& ctx, IR::Inst* inst);
template<> template<>

13
src/dynarmic/backend/riscv64/reg_alloc.cpp
View file

@ -125,6 +125,19 @@ void RegAlloc::UpdateAllUses() {
} }
} }
void RegAlloc::DefineAsExisting(IR::Inst* inst, Argument& arg) {
ASSERT(!ValueLocation(inst));
if (arg.value.IsImmediate()) {
inst->ReplaceUsesWith(arg.value);
return;
}
auto& info = ValueInfo(arg.value.GetInst());
info.values.emplace_back(inst);
info.expected_uses += inst->UseCount();
}
void RegAlloc::AssertNoMoreUses() const { void RegAlloc::AssertNoMoreUses() const {
const auto is_empty = [](const auto& i) { return i.IsCompletelyEmpty(); }; const auto is_empty = [](const auto& i) { return i.IsCompletelyEmpty(); };
ASSERT(std::all_of(gprs.begin(), gprs.end(), is_empty)); ASSERT(std::all_of(gprs.begin(), gprs.end(), is_empty));

2
src/dynarmic/backend/riscv64/reg_alloc.h
View file

@ -118,6 +118,8 @@ public:
auto WriteX(IR::Inst* inst) { return RAReg<biscuit::GPR>{*this, true, IR::Value{inst}}; } auto WriteX(IR::Inst* inst) { return RAReg<biscuit::GPR>{*this, true, IR::Value{inst}}; }
auto WriteD(IR::Inst* inst) { return RAReg<biscuit::FPR>{*this, true, IR::Value{inst}}; } auto WriteD(IR::Inst* inst) { return RAReg<biscuit::FPR>{*this, true, IR::Value{inst}}; }
void DefineAsExisting(IR::Inst* inst, Argument& arg);
void SpillAll(); void SpillAll();
template<typename... Ts> template<typename... Ts>