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frontend/ir_emitter: Add half->{single, double} and {double, single}->half conversion opcodes

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Lioncash 2019-03-23 10:02:51 -04:00 committed by MerryMage
parent dff5da1063
commit e4c259d69f
5 changed files with 72 additions and 0 deletions
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44
src/backend/x64/emit_x64_floating_point.cpp
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@ -1036,6 +1036,28 @@ void EmitX64::EmitFPCompare64(EmitContext& ctx, IR::Inst* inst) {
ctx.reg_alloc.DefineValue(inst, nzcv); ctx.reg_alloc.DefineValue(inst, nzcv);
} }
void EmitX64::EmitFPHalfToDouble(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const auto rounding_mode = static_cast<FP::RoundingMode>(args[1].GetImmediateU8());
ctx.reg_alloc.HostCall(inst, args[0]);
code.mov(code.ABI_PARAM2.cvt32(), ctx.FPCR());
code.mov(code.ABI_PARAM3.cvt32(), static_cast<u32>(rounding_mode));
code.lea(code.ABI_PARAM4, code.ptr[code.r15 + code.GetJitStateInfo().offsetof_fpsr_exc]);
code.CallFunction(&FP::FPConvert<u64, u16>);
}
void EmitX64::EmitFPHalfToSingle(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const auto rounding_mode = static_cast<FP::RoundingMode>(args[1].GetImmediateU8());
ctx.reg_alloc.HostCall(inst, args[0]);
code.mov(code.ABI_PARAM2.cvt32(), ctx.FPCR());
code.mov(code.ABI_PARAM3.cvt32(), static_cast<u32>(rounding_mode));
code.lea(code.ABI_PARAM4, code.ptr[code.r15 + code.GetJitStateInfo().offsetof_fpsr_exc]);
code.CallFunction(&FP::FPConvert<u32, u16>);
}
void EmitX64::EmitFPSingleToDouble(EmitContext& ctx, IR::Inst* inst) { void EmitX64::EmitFPSingleToDouble(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst); auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const auto rounding_mode = static_cast<FP::RoundingMode>(args[1].GetImmediateU8()); const auto rounding_mode = static_cast<FP::RoundingMode>(args[1].GetImmediateU8());
@ -1058,6 +1080,28 @@ void EmitX64::EmitFPSingleToDouble(EmitContext& ctx, IR::Inst* inst) {
} }
} }
void EmitX64::EmitFPSingleToHalf(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const auto rounding_mode = static_cast<FP::RoundingMode>(args[1].GetImmediateU8());
ctx.reg_alloc.HostCall(inst, args[0]);
code.mov(code.ABI_PARAM2.cvt32(), ctx.FPCR());
code.mov(code.ABI_PARAM3.cvt32(), static_cast<u32>(rounding_mode));
code.lea(code.ABI_PARAM4, code.ptr[code.r15 + code.GetJitStateInfo().offsetof_fpsr_exc]);
code.CallFunction(&FP::FPConvert<u16, u32>);
}
void EmitX64::EmitFPDoubleToHalf(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const auto rounding_mode = static_cast<FP::RoundingMode>(args[1].GetImmediateU8());
ctx.reg_alloc.HostCall(inst, args[0]);
code.mov(code.ABI_PARAM2.cvt32(), ctx.FPCR());
code.mov(code.ABI_PARAM3.cvt32(), static_cast<u32>(rounding_mode));
code.lea(code.ABI_PARAM4, code.ptr[code.r15 + code.GetJitStateInfo().offsetof_fpsr_exc]);
code.CallFunction(&FP::FPConvert<u16, u64>);
}
void EmitX64::EmitFPDoubleToSingle(EmitContext& ctx, IR::Inst* inst) { void EmitX64::EmitFPDoubleToSingle(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst); auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const auto rounding_mode = static_cast<FP::RoundingMode>(args[1].GetImmediateU8()); const auto rounding_mode = static_cast<FP::RoundingMode>(args[1].GetImmediateU8());

16
src/frontend/ir/ir_emitter.cpp
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@ -1955,14 +1955,30 @@ U32U64 IREmitter::FPSub(const U32U64& a, const U32U64& b, bool fpcr_controlled)
} }
} }
U16 IREmitter::FPDoubleToHalf(const U64& a, FP::RoundingMode rounding) {
return Inst<U16>(Opcode::FPDoubleToHalf, a, Imm8(static_cast<u8>(rounding)));
}
U32 IREmitter::FPDoubleToSingle(const U64& a, FP::RoundingMode rounding) { U32 IREmitter::FPDoubleToSingle(const U64& a, FP::RoundingMode rounding) {
return Inst<U32>(Opcode::FPDoubleToSingle, a, Imm8(static_cast<u8>(rounding))); return Inst<U32>(Opcode::FPDoubleToSingle, a, Imm8(static_cast<u8>(rounding)));
} }
U64 IREmitter::FPHalfToDouble(const U16& a, FP::RoundingMode rounding) {
return Inst<U64>(Opcode::FPHalfToDouble, a, Imm8(static_cast<u8>(rounding)));
}
U32 IREmitter::FPHalfToSingle(const U16& a, FP::RoundingMode rounding) {
return Inst<U32>(Opcode::FPHalfToSingle, a, Imm8(static_cast<u8>(rounding)));
}
U64 IREmitter::FPSingleToDouble(const U32& a, FP::RoundingMode rounding) { U64 IREmitter::FPSingleToDouble(const U32& a, FP::RoundingMode rounding) {
return Inst<U64>(Opcode::FPSingleToDouble, a, Imm8(static_cast<u8>(rounding))); return Inst<U64>(Opcode::FPSingleToDouble, a, Imm8(static_cast<u8>(rounding)));
} }
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 U32U64& a, size_t fbits, FP::RoundingMode rounding) {
ASSERT(fbits <= 32); ASSERT(fbits <= 32);
const Opcode opcode = a.GetType() == Type::U32 ? Opcode::FPSingleToFixedS32 : Opcode::FPDoubleToFixedS32; const Opcode opcode = a.GetType() == Type::U32 ? Opcode::FPSingleToFixedS32 : Opcode::FPDoubleToFixedS32;

4
src/frontend/ir/ir_emitter.h
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@ -312,7 +312,11 @@ public:
U32U64 FPRSqrtStepFused(const U32U64& a, const U32U64& b); U32U64 FPRSqrtStepFused(const U32U64& a, const U32U64& b);
U32U64 FPSqrt(const U32U64& a); U32U64 FPSqrt(const U32U64& a);
U32U64 FPSub(const U32U64& a, const U32U64& b, bool fpcr_controlled); U32U64 FPSub(const U32U64& a, const U32U64& b, bool fpcr_controlled);
U16 FPDoubleToHalf(const U64& a, FP::RoundingMode rounding);
U32 FPDoubleToSingle(const U64& a, FP::RoundingMode rounding); U32 FPDoubleToSingle(const U64& a, FP::RoundingMode rounding);
U64 FPHalfToDouble(const U16& a, FP::RoundingMode rounding);
U32 FPHalfToSingle(const U16& a, FP::RoundingMode rounding);
U16 FPSingleToHalf(const U32& a, FP::RoundingMode rounding);
U64 FPSingleToDouble(const U32& a, FP::RoundingMode rounding); U64 FPSingleToDouble(const U32& a, FP::RoundingMode rounding);
U32 FPToFixedS32(const U32U64& a, size_t fbits, FP::RoundingMode rounding); U32 FPToFixedS32(const U32U64& a, size_t fbits, FP::RoundingMode rounding);
U64 FPToFixedS64(const U32U64& a, size_t fbits, FP::RoundingMode rounding); U64 FPToFixedS64(const U32U64& a, size_t fbits, FP::RoundingMode rounding);

4
src/frontend/ir/microinstruction.cpp
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@ -288,7 +288,11 @@ bool Inst::ReadsFromAndWritesToFPSRCumulativeExceptionBits() const {
case Opcode::FPSqrt64: case Opcode::FPSqrt64:
case Opcode::FPSub32: case Opcode::FPSub32:
case Opcode::FPSub64: case Opcode::FPSub64:
case Opcode::FPHalfToDouble:
case Opcode::FPHalfToSingle:
case Opcode::FPSingleToDouble: case Opcode::FPSingleToDouble:
case Opcode::FPSingleToHalf:
case Opcode::FPDoubleToHalf:
case Opcode::FPDoubleToSingle: case Opcode::FPDoubleToSingle:
case Opcode::FPDoubleToFixedS32: case Opcode::FPDoubleToFixedS32:
case Opcode::FPDoubleToFixedS64: case Opcode::FPDoubleToFixedS64:

4
src/frontend/ir/opcodes.inc
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@ -503,7 +503,11 @@ OPCODE(FPSub32, U32, U32,
OPCODE(FPSub64, U64, U64, U64 ) OPCODE(FPSub64, U64, U64, U64 )
// Floating-point conversions // Floating-point conversions
OPCODE(FPHalfToDouble, U64, U16, U8 )
OPCODE(FPHalfToSingle, U32, U16, U8 )
OPCODE(FPSingleToDouble, U64, U32, U8 ) OPCODE(FPSingleToDouble, U64, U32, U8 )
OPCODE(FPSingleToHalf, U16, U32, U8 )
OPCODE(FPDoubleToHalf, U16, U64, U8 )
OPCODE(FPDoubleToSingle, U32, U64, U8 ) OPCODE(FPDoubleToSingle, U32, U64, U8 )
OPCODE(FPDoubleToFixedS32, U32, U64, U8, U8 ) OPCODE(FPDoubleToFixedS32, U32, U64, U8, U8 )
OPCODE(FPDoubleToFixedS64, U64, U64, U8, U8 ) OPCODE(FPDoubleToFixedS64, U64, U64, U8, U8 )