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Add soft float support for a bunch more operations. Original 

patch by Richard Osborne, tweaked and extended by your humble
servant.

llvm-svn: 59464
This commit is contained in:
Duncan Sands 2008-11-17 20:52:38 +00:00
parent 0f492d1a11
commit f046b50ecd
13 changed files with 356 additions and 4 deletions
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178
llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
View File

@ -61,14 +61,28 @@ void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
break;
case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break;
case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break;
case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break;
case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break;
case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break;
case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break;
case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break;
case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break;
case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break;
case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break;
case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break;
case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break;
case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break;
case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break;
case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break;
case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break;
@ -103,7 +117,7 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
unsigned Size = NVT.getSizeInBits();
// Mask = ~(1 << (Size-1))
SDValue Mask = DAG.getConstant(APInt::getAllOnesValue(Size).clear(Size-1),
SDValue Mask = DAG.getConstant(APInt::getAllOnesValue(Size).clear(Size-1),
NVT);
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return DAG.getNode(ISD::AND, NVT, Op, Mask);
@ -121,6 +135,17 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
NVT, Ops, 2, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::CEIL_F32,
RTLIB::CEIL_F64,
RTLIB::CEIL_F80,
RTLIB::CEIL_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
SDValue LHS = GetSoftenedFloat(N->getOperand(0));
SDValue RHS = BitConvertToInteger(N->getOperand(1));
@ -160,6 +185,17 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
return DAG.getNode(ISD::OR, LVT, LHS, SignBit);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::COS_F32,
RTLIB::COS_F64,
RTLIB::COS_F80,
RTLIB::COS_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
@ -172,6 +208,72 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
NVT, Ops, 2, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::EXP_F32,
RTLIB::EXP_F64,
RTLIB::EXP_F80,
RTLIB::EXP_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::EXP2_F32,
RTLIB::EXP2_F64,
RTLIB::EXP2_F80,
RTLIB::EXP2_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::FLOOR_F32,
RTLIB::FLOOR_F64,
RTLIB::FLOOR_F80,
RTLIB::FLOOR_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::LOG_F32,
RTLIB::LOG_F64,
RTLIB::LOG_F80,
RTLIB::LOG_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::LOG2_F32,
RTLIB::LOG2_F64,
RTLIB::LOG2_F80,
RTLIB::LOG2_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::LOG10_F32,
RTLIB::LOG10_F64,
RTLIB::LOG10_F80,
RTLIB::LOG10_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
@ -184,6 +286,30 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
NVT, Ops, 2, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::NEARBYINT_F32,
RTLIB::NEARBYINT_F64,
RTLIB::NEARBYINT_F80,
RTLIB::NEARBYINT_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
// Expand Y = FNEG(X) -> Y = SUB -0.0, X
SDValue Ops[2] = { DAG.getConstantFP(-0.0, NVT),
GetSoftenedFloat(N->getOperand(0)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::SUB_F32,
RTLIB::SUB_F64,
RTLIB::SUB_F80,
RTLIB::SUB_PPCF128),
NVT, Ops, 2, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = N->getOperand(0);
@ -225,6 +351,39 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
NVT, Ops, 2, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::RINT_F32,
RTLIB::RINT_F64,
RTLIB::RINT_F80,
RTLIB::RINT_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::SIN_F32,
RTLIB::SIN_F64,
RTLIB::SIN_F80,
RTLIB::SIN_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::SQRT_F32,
RTLIB::SQRT_F64,
RTLIB::SQRT_F80,
RTLIB::SQRT_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
@ -237,6 +396,17 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
NVT, Ops, 2, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::TRUNC_F32,
RTLIB::TRUNC_F64,
RTLIB::TRUNC_F80,
RTLIB::TRUNC_PPCF128),
NVT, &Op, 1, false);
}
SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
LoadSDNode *L = cast<LoadSDNode>(N);
MVT VT = N->getValueType(0);
@ -607,7 +777,7 @@ void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break;
case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break;
case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break;
case ISD::FSIN: ExpandFloatRes_FABS(N, Lo, Hi); break;
case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break;
case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break;
case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
@ -926,14 +1096,14 @@ void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
// though.
if (SrcVT.bitsLE(MVT::i32)) {
// The integer can be represented exactly in an f64.
Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
MVT::i32, Src);
Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
Hi = DAG.getNode(ISD::SINT_TO_FP, NVT, Src);
} else {
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
if (SrcVT.bitsLE(MVT::i64)) {
Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
MVT::i64, Src);
LC = RTLIB::SINTTOFP_I64_PPCF128;
} else if (SrcVT.bitsLE(MVT::i128)) {

14
llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
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@ -351,14 +351,28 @@ private:
SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N);
SDValue SoftenFloatRes_FABS(SDNode *N);
SDValue SoftenFloatRes_FADD(SDNode *N);
SDValue SoftenFloatRes_FCEIL(SDNode *N);
SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N);
SDValue SoftenFloatRes_FCOS(SDNode *N);
SDValue SoftenFloatRes_FDIV(SDNode *N);
SDValue SoftenFloatRes_FEXP(SDNode *N);
SDValue SoftenFloatRes_FEXP2(SDNode *N);
SDValue SoftenFloatRes_FFLOOR(SDNode *N);
SDValue SoftenFloatRes_FLOG(SDNode *N);
SDValue SoftenFloatRes_FLOG2(SDNode *N);
SDValue SoftenFloatRes_FLOG10(SDNode *N);
SDValue SoftenFloatRes_FMUL(SDNode *N);
SDValue SoftenFloatRes_FNEARBYINT(SDNode *N);
SDValue SoftenFloatRes_FNEG(SDNode *N);
SDValue SoftenFloatRes_FP_EXTEND(SDNode *N);
SDValue SoftenFloatRes_FP_ROUND(SDNode *N);
SDValue SoftenFloatRes_FPOW(SDNode *N);
SDValue SoftenFloatRes_FPOWI(SDNode *N);
SDValue SoftenFloatRes_FRINT(SDNode *N);
SDValue SoftenFloatRes_FSIN(SDNode *N);
SDValue SoftenFloatRes_FSQRT(SDNode *N);
SDValue SoftenFloatRes_FSUB(SDNode *N);
SDValue SoftenFloatRes_FTRUNC(SDNode *N);
SDValue SoftenFloatRes_LOAD(SDNode *N);
SDValue SoftenFloatRes_SELECT(SDNode *N);
SDValue SoftenFloatRes_SELECT_CC(SDNode *N);

16
llvm/test/CodeGen/XCore/cos.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl cosf" %t1.s | count 1
; RUN: grep "bl cos" %t1.s | count 2
declare double @llvm.cos.f64(double)
define double @test(double %F) {
%result = call double @llvm.cos.f64(double %F)
ret double %result
}
declare float @llvm.cos.f32(float)
define float @testf(float %F) {
%result = call float @llvm.cos.f32(float %F)
ret float %result
}

16
llvm/test/CodeGen/XCore/exp.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl expf" %t1.s | count 1
; RUN: grep "bl exp" %t1.s | count 2
declare double @llvm.exp.f64(double)
define double @test(double %F) {
%result = call double @llvm.exp.f64(double %F)
ret double %result
}
declare float @llvm.exp.f32(float)
define float @testf(float %F) {
%result = call float @llvm.exp.f32(float %F)
ret float %result
}

16
llvm/test/CodeGen/XCore/exp2.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl exp2f" %t1.s | count 1
; RUN: grep "bl exp2" %t1.s | count 2
declare double @llvm.exp2.f64(double)
define double @test(double %F) {
%result = call double @llvm.exp2.f64(double %F)
ret double %result
}
declare float @llvm.exp2.f32(float)
define float @testf(float %F) {
%result = call float @llvm.exp2.f32(float %F)
ret float %result
}

8
llvm/test/CodeGen/XCore/fneg.ll Normal file
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@ -0,0 +1,8 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl __subdf3" %t1.s | count 1
define i1 @test(double %F) nounwind {
entry:
%0 = sub double -0.000000e+00, %F
%1 = fcmp olt double 0.000000e+00, %0
ret i1 %1
}

16
llvm/test/CodeGen/XCore/log.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl logf" %t1.s | count 1
; RUN: grep "bl log" %t1.s | count 2
declare double @llvm.log.f64(double)
define double @test(double %F) {
%result = call double @llvm.log.f64(double %F)
ret double %result
}
declare float @llvm.log.f32(float)
define float @testf(float %F) {
%result = call float @llvm.log.f32(float %F)
ret float %result
}

16
llvm/test/CodeGen/XCore/log10.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl log10f" %t1.s | count 1
; RUN: grep "bl log10" %t1.s | count 2
declare double @llvm.log10.f64(double)
define double @test(double %F) {
%result = call double @llvm.log10.f64(double %F)
ret double %result
}
declare float @llvm.log10.f32(float)
define float @testf(float %F) {
%result = call float @llvm.log10.f32(float %F)
ret float %result
}

16
llvm/test/CodeGen/XCore/log2.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl log2f" %t1.s | count 1
; RUN: grep "bl log2" %t1.s | count 2
declare double @llvm.log2.f64(double)
define double @test(double %F) {
%result = call double @llvm.log2.f64(double %F)
ret double %result
}
declare float @llvm.log2.f32(float)
define float @testf(float %F) {
%result = call float @llvm.log2.f32(float %F)
ret float %result
}

16
llvm/test/CodeGen/XCore/pow.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl powf" %t1.s | count 1
; RUN: grep "bl pow" %t1.s | count 2
declare double @llvm.pow.f64(double, double)
define double @test(double %F, double %power) {
%result = call double @llvm.pow.f64(double %F, double %power)
ret double %result
}
declare float @llvm.pow.f32(float, float)
define float @testf(float %F, float %power) {
%result = call float @llvm.pow.f32(float %F, float %power)
ret float %result
}

16
llvm/test/CodeGen/XCore/powi.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl __powidf2" %t1.s | count 1
; RUN: grep "bl __powisf2" %t1.s | count 1
declare double @llvm.powi.f64(double, i32)
define double @test(double %F, i32 %power) {
%result = call double @llvm.powi.f64(double %F, i32 %power)
ret double %result
}
declare float @llvm.powi.f32(float, i32)
define float @testf(float %F, i32 %power) {
%result = call float @llvm.powi.f32(float %F, i32 %power)
ret float %result
}

16
llvm/test/CodeGen/XCore/sin.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl sinf" %t1.s | count 1
; RUN: grep "bl sin" %t1.s | count 2
declare double @llvm.sin.f64(double)
define double @test(double %F) {
%result = call double @llvm.sin.f64(double %F)
ret double %result
}
declare float @llvm.sin.f32(float)
define float @testf(float %F) {
%result = call float @llvm.sin.f32(float %F)
ret float %result
}

16
llvm/test/CodeGen/XCore/sqrt.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llvm-as < %s | llc -march=xcore > %t1.s
; RUN: grep "bl sqrtf" %t1.s | count 1
; RUN: grep "bl sqrt" %t1.s | count 2
declare double @llvm.sqrt.f64(double)
define double @test(double %F) {
%result = call double @llvm.sqrt.f64(double %F)
ret double %result
}
declare float @llvm.sqrt.f32(float)
define float @testf(float %F) {
%result = call float @llvm.sqrt.f32(float %F)
ret float %result
}