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frontend/ir_emitter: Add half-precision->fixed-point opcodes

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Lioncash 2019-04-15 00:20:37 -04:00 • committed by MerryMage
parent 4ecfbc14de
commit 604f39f00a
6 changed files with 270 additions and 163 deletions
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98
src/frontend/ir/ir_emitter.cpp
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@ -2046,28 +2046,80 @@ U16 IREmitter::FPSingleToHalf(const U32& a, FP::RoundingMode rounding) {
return Inst<U16>(Opcode::FPSingleToHalf, a, Imm8(static_cast<u8>(rounding)));
}
U32 IREmitter::FPToFixedS32(const U32U64& a, size_t fbits, FP::RoundingMode rounding) {
U32 IREmitter::FPToFixedS32(const U16U32U64& a, size_t fbits, FP::RoundingMode rounding) {
ASSERT(fbits <= 32);
const Opcode opcode = a.GetType() == Type::U32 ? Opcode::FPSingleToFixedS32 : Opcode::FPDoubleToFixedS32;
return Inst<U32>(opcode, a, Imm8(static_cast<u8>(fbits)), Imm8(static_cast<u8>(rounding)));
const U8 fbits_imm = Imm8(static_cast<u8>(fbits));
const U8 rounding_imm = Imm8(static_cast<u8>(rounding));
switch (a.GetType()) {
case Type::U16:
return Inst<U32>(Opcode::FPHalfToFixedS32, a, fbits_imm, rounding_imm);
case Type::U32:
return Inst<U32>(Opcode::FPSingleToFixedS32, a, fbits_imm, rounding_imm);
case Type::U64:
return Inst<U32>(Opcode::FPDoubleToFixedS32, a, fbits_imm, rounding_imm);
default:
UNREACHABLE();
return U32{};
}
}
U64 IREmitter::FPToFixedS64(const U32U64& a, size_t fbits, FP::RoundingMode rounding) {
U64 IREmitter::FPToFixedS64(const U16U32U64& a, size_t fbits, FP::RoundingMode rounding) {
ASSERT(fbits <= 64);
const Opcode opcode = a.GetType() == Type::U32 ? Opcode::FPSingleToFixedS64 : Opcode::FPDoubleToFixedS64;
return Inst<U64>(opcode, a, Imm8(static_cast<u8>(fbits)), Imm8(static_cast<u8>(rounding)));
const U8 fbits_imm = Imm8(static_cast<u8>(fbits));
const U8 rounding_imm = Imm8(static_cast<u8>(rounding));
switch (a.GetType()) {
case Type::U16:
return Inst<U64>(Opcode::FPHalfToFixedS64, a, fbits_imm, rounding_imm);
case Type::U32:
return Inst<U64>(Opcode::FPSingleToFixedS64, a, fbits_imm, rounding_imm);
case Type::U64:
return Inst<U64>(Opcode::FPDoubleToFixedS64, a, fbits_imm, rounding_imm);
default:
UNREACHABLE();
return U64{};
}
}
U32 IREmitter::FPToFixedU32(const U32U64& a, size_t fbits, FP::RoundingMode rounding) {
U32 IREmitter::FPToFixedU32(const U16U32U64& a, size_t fbits, FP::RoundingMode rounding) {
ASSERT(fbits <= 32);
const Opcode opcode = a.GetType() == Type::U32 ? Opcode::FPSingleToFixedU32 : Opcode::FPDoubleToFixedU32;
return Inst<U32>(opcode, a, Imm8(static_cast<u8>(fbits)), Imm8(static_cast<u8>(rounding)));
const U8 fbits_imm = Imm8(static_cast<u8>(fbits));
const U8 rounding_imm = Imm8(static_cast<u8>(rounding));
switch (a.GetType()) {
case Type::U16:
return Inst<U32>(Opcode::FPHalfToFixedU32, a, fbits_imm, rounding_imm);
case Type::U32:
return Inst<U32>(Opcode::FPSingleToFixedU32, a, fbits_imm, rounding_imm);
case Type::U64:
return Inst<U32>(Opcode::FPDoubleToFixedU32, a, fbits_imm, rounding_imm);
default:
UNREACHABLE();
return U32{};
}
}
U64 IREmitter::FPToFixedU64(const U32U64& a, size_t fbits, FP::RoundingMode rounding) {
U64 IREmitter::FPToFixedU64(const U16U32U64& a, size_t fbits, FP::RoundingMode rounding) {
ASSERT(fbits <= 64);
const Opcode opcode = a.GetType() == Type::U32 ? Opcode::FPSingleToFixedU64 : Opcode::FPDoubleToFixedU64;
return Inst<U64>(opcode, a, Imm8(static_cast<u8>(fbits)), Imm8(static_cast<u8>(rounding)));
const U8 fbits_imm = Imm8(static_cast<u8>(fbits));
const U8 rounding_imm = Imm8(static_cast<u8>(rounding));
switch (a.GetType()) {
case Type::U16:
return Inst<U64>(Opcode::FPHalfToFixedU64, a, fbits_imm, rounding_imm);
case Type::U32:
return Inst<U64>(Opcode::FPSingleToFixedU64, a, fbits_imm, rounding_imm);
case Type::U64:
return Inst<U64>(Opcode::FPDoubleToFixedU64, a, fbits_imm, rounding_imm);
default:
UNREACHABLE();
return U64{};
}
}
U32 IREmitter::FPSignedFixedToSingle(const U32U64& a, size_t fbits, FP::RoundingMode rounding) {
@ -2368,24 +2420,38 @@ U128 IREmitter::FPVectorSub(size_t esize, const U128& a, const U128& b) {
U128 IREmitter::FPVectorToSignedFixed(size_t esize, const U128& a, size_t fbits, FP::RoundingMode rounding) {
ASSERT(fbits <= esize);
const U8 fbits_imm = Imm8(static_cast<u8>(fbits));
const U8 rounding_imm = Imm8(static_cast<u8>(rounding));
switch (esize) {
case 16:
return Inst<U128>(Opcode::FPVectorToSignedFixed16, a, fbits_imm, rounding_imm);
case 32:
return Inst<U128>(Opcode::FPVectorToSignedFixed32, a, Imm8(static_cast<u8>(fbits)), Imm8(static_cast<u8>(rounding)));
return Inst<U128>(Opcode::FPVectorToSignedFixed32, a, fbits_imm, rounding_imm);
case 64:
return Inst<U128>(Opcode::FPVectorToSignedFixed64, a, Imm8(static_cast<u8>(fbits)), Imm8(static_cast<u8>(rounding)));
return Inst<U128>(Opcode::FPVectorToSignedFixed64, a, fbits_imm, rounding_imm);
}
UNREACHABLE();
return {};
}
U128 IREmitter::FPVectorToUnsignedFixed(size_t esize, const U128& a, size_t fbits, FP::RoundingMode rounding) {
ASSERT(fbits <= esize);
const U8 fbits_imm = Imm8(static_cast<u8>(fbits));
const U8 rounding_imm = Imm8(static_cast<u8>(rounding));
switch (esize) {
case 16:
return Inst<U128>(Opcode::FPVectorToUnsignedFixed16, a, fbits_imm, rounding_imm);
case 32:
return Inst<U128>(Opcode::FPVectorToUnsignedFixed32, a, Imm8(static_cast<u8>(fbits)), Imm8(static_cast<u8>(rounding)));
return Inst<U128>(Opcode::FPVectorToUnsignedFixed32, a, fbits_imm, rounding_imm);
case 64:
return Inst<U128>(Opcode::FPVectorToUnsignedFixed64, a, Imm8(static_cast<u8>(fbits)), Imm8(static_cast<u8>(rounding)));
return Inst<U128>(Opcode::FPVectorToUnsignedFixed64, a, fbits_imm, rounding_imm);
}
UNREACHABLE();
return {};
}