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frontend/ir_emitter: Add half-precision opcode variant for FPRSqrtEstimate

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Lioncash 2019-04-13 18:34:35 -04:00 committed by MerryMage
parent 726b9914c5
commit 5dba99b4f4
5 changed files with 17 additions and 4 deletions
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4
src/backend/x64/emit_x64_floating_point.cpp
View file

@ -920,6 +920,10 @@ static void EmitFPRSqrtEstimate(BlockOfCode& code, EmitContext& ctx, IR::Inst* i
code.CallFunction(&FP::FPRSqrtEstimate<FPT>);
}
void EmitX64::EmitFPRSqrtEstimate16(EmitContext& ctx, IR::Inst* inst) {
EmitFPRSqrtEstimate<u16>(code, ctx, inst);
}
void EmitX64::EmitFPRSqrtEstimate32(EmitContext& ctx, IR::Inst* inst) {
EmitFPRSqrtEstimate<u32>(code, ctx, inst);
}

13
src/frontend/ir/ir_emitter.cpp
View file

@ -1967,11 +1967,18 @@ U16U32U64 IREmitter::FPRoundInt(const U16U32U64& a, FP::RoundingMode rounding, b
}
}
U32U64 IREmitter::FPRSqrtEstimate(const U32U64& a) {
if (a.GetType() == Type::U32) {
U16U32U64 IREmitter::FPRSqrtEstimate(const U16U32U64& a) {
switch (a.GetType()) {
case Type::U16:
return Inst<U16>(Opcode::FPRSqrtEstimate16, a);
case Type::U32:
return Inst<U32>(Opcode::FPRSqrtEstimate32, a);
}
case Type::U64:
return Inst<U64>(Opcode::FPRSqrtEstimate64, a);
default:
UNREACHABLE();
return U16U32U64{};
}
}
U32U64 IREmitter::FPRSqrtStepFused(const U32U64& a, const U32U64& b) {

2
src/frontend/ir/ir_emitter.h
View file

@ -309,7 +309,7 @@ public:
U16U32U64 FPRecipExponent(const U16U32U64& a);
U32U64 FPRecipStepFused(const U32U64& a, const U32U64& b);
U16U32U64 FPRoundInt(const U16U32U64& a, FP::RoundingMode rounding, bool exact);
U32U64 FPRSqrtEstimate(const U32U64& a);
U16U32U64 FPRSqrtEstimate(const U16U32U64& a);
U32U64 FPRSqrtStepFused(const U32U64& a, const U32U64& b);
U32U64 FPSqrt(const U32U64& a);
U32U64 FPSub(const U32U64& a, const U32U64& b, bool fpcr_controlled);

1
src/frontend/ir/microinstruction.cpp
View file

@ -282,6 +282,7 @@ bool Inst::ReadsFromAndWritesToFPSRCumulativeExceptionBits() const {
case Opcode::FPRoundInt16:
case Opcode::FPRoundInt32:
case Opcode::FPRoundInt64:
case Opcode::FPRSqrtEstimate16:
case Opcode::FPRSqrtEstimate32:
case Opcode::FPRSqrtEstimate64:
case Opcode::FPRSqrtStepFused32:

1
src/frontend/ir/opcodes.inc
View file

@ -501,6 +501,7 @@ OPCODE(FPRecipStepFused64, U64, U64,
OPCODE(FPRoundInt16, U16, U16, U8, U1 )
OPCODE(FPRoundInt32, U32, U32, U8, U1 )
OPCODE(FPRoundInt64, U64, U64, U8, U1 )
OPCODE(FPRSqrtEstimate16, U16, U16 )
OPCODE(FPRSqrtEstimate32, U32, U32 )
OPCODE(FPRSqrtEstimate64, U64, U64 )
OPCODE(FPRSqrtStepFused32, U32, U32, U32 )