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Refactor to expose RTLIB calls to targets.

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fp128 is almost but not quite completely illegal as a type on AArch64. As a
result it needs to have a register class (for argument passing mainly), but all
operations need to be lowered to runtime calls. Currently there's no way for
targets to do this (without duplicating code), as the relevant functions are
hidden in SelectionDAG. This patch changes that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171971 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover 2013-01-09 13:18:15 +00:00
parent b1349fa3c5
commit 2c8cf4b404
7 changed files with 378 additions and 337 deletions
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11
include/llvm/Target/TargetLowering.h
View File

@ -1848,6 +1848,17 @@ public:
return LibcallCallingConvs[Call];
}
bool isInTailCallPosition(SelectionDAG &DAG, SDNode *Node,
SDValue &Chain) const;
void softenSetCCOperands(SelectionDAG &DAG, EVT VT,
SDValue &NewLHS, SDValue &NewRHS,
ISD::CondCode &CCCode, DebugLoc DL) const;
SDValue makeLibCall(SelectionDAG &DAG, RTLIB::Libcall LC, EVT RetVT,
const SDValue *Ops, unsigned NumOps,
bool isSigned, DebugLoc dl) const;
private:
const TargetMachine &TM;
const DataLayout *TD;

22
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -1841,26 +1841,6 @@ SDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) {
return ExpandVectorBuildThroughStack(Node);
}
static bool isInTailCallPosition(SelectionDAG &DAG, SDNode *Node,
SDValue &Chain, const TargetLowering &TLI) {
const Function *F = DAG.getMachineFunction().getFunction();
// Conservatively require the attributes of the call to match those of
// the return. Ignore noalias because it doesn't affect the call sequence.
Attribute CallerRetAttr = F->getAttributes().getRetAttributes();
if (AttrBuilder(CallerRetAttr)
.removeAttribute(Attribute::NoAlias).hasAttributes())
return false;
// It's not safe to eliminate the sign / zero extension of the return value.
if (CallerRetAttr.hasAttribute(Attribute::ZExt) ||
CallerRetAttr.hasAttribute(Attribute::SExt))
return false;
// Check if the only use is a function return node.
return TLI.isUsedByReturnOnly(Node, Chain);
}
// ExpandLibCall - Expand a node into a call to a libcall. If the result value
// does not fit into a register, return the lo part and set the hi part to the
// by-reg argument. If it does fit into a single register, return the result
@ -1891,7 +1871,7 @@ SDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node,
// isTailCall may be true since the callee does not reference caller stack
// frame. Check if it's in the right position.
SDValue TCChain = InChain;
bool isTailCall = isInTailCallPosition(DAG, Node, TCChain, TLI);
bool isTailCall = TLI.isInTailCallPosition(DAG, Node, TCChain);
if (isTailCall)
InChain = TCChain;

458
lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
View File

@ -152,23 +152,23 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::ADD_F32,
RTLIB::ADD_F64,
RTLIB::ADD_F80,
RTLIB::ADD_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::ADD_F32,
RTLIB::ADD_F64,
RTLIB::ADD_F80,
RTLIB::ADD_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::CEIL_F32,
RTLIB::CEIL_F64,
RTLIB::CEIL_F80,
RTLIB::CEIL_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
@ -216,90 +216,90 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::COS_F32,
RTLIB::COS_F64,
RTLIB::COS_F80,
RTLIB::COS_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::DIV_F32,
RTLIB::DIV_F64,
RTLIB::DIV_F80,
RTLIB::DIV_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::DIV_F32,
RTLIB::DIV_F64,
RTLIB::DIV_F80,
RTLIB::DIV_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::EXP_F32,
RTLIB::EXP_F64,
RTLIB::EXP_F80,
RTLIB::EXP_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::EXP2_F32,
RTLIB::EXP2_F64,
RTLIB::EXP2_F80,
RTLIB::EXP2_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::FLOOR_F32,
RTLIB::FLOOR_F64,
RTLIB::FLOOR_F80,
RTLIB::FLOOR_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::LOG_F32,
RTLIB::LOG_F64,
RTLIB::LOG_F80,
RTLIB::LOG_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::LOG2_F32,
RTLIB::LOG2_F64,
RTLIB::LOG2_F80,
RTLIB::LOG2_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::LOG10_F32,
RTLIB::LOG10_F64,
RTLIB::LOG10_F80,
RTLIB::LOG10_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) {
@ -307,35 +307,35 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) {
SDValue Ops[3] = { GetSoftenedFloat(N->getOperand(0)),
GetSoftenedFloat(N->getOperand(1)),
GetSoftenedFloat(N->getOperand(2)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::FMA_F32,
RTLIB::FMA_F64,
RTLIB::FMA_F80,
RTLIB::FMA_PPCF128),
NVT, Ops, 3, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::FMA_F32,
RTLIB::FMA_F64,
RTLIB::FMA_F80,
RTLIB::FMA_PPCF128),
NVT, Ops, 3, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::MUL_F32,
RTLIB::MUL_F64,
RTLIB::MUL_F80,
RTLIB::MUL_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::MUL_F32,
RTLIB::MUL_F64,
RTLIB::MUL_F80,
RTLIB::MUL_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::NEARBYINT_F32,
RTLIB::NEARBYINT_F64,
RTLIB::NEARBYINT_F80,
RTLIB::NEARBYINT_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
@ -343,12 +343,12 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
// Expand Y = FNEG(X) -> Y = SUB -0.0, X
SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)),
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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::SUB_F32,
RTLIB::SUB_F64,
RTLIB::SUB_F80,
RTLIB::SUB_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
@ -356,7 +356,7 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
SDValue Op = N->getOperand(0);
RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
return MakeLibCall(LC, NVT, &Op, 1, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, N->getDebugLoc());
}
// FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special
@ -364,8 +364,8 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP32(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Op = N->getOperand(0);
return MakeLibCall(RTLIB::FPEXT_F16_F32, NVT, &Op, 1, false,
N->getDebugLoc());
return TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, NVT, &Op, 1, false,
N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
@ -373,19 +373,19 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
SDValue Op = N->getOperand(0);
RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
return MakeLibCall(LC, NVT, &Op, 1, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::POW_F32,
RTLIB::POW_F64,
RTLIB::POW_F80,
RTLIB::POW_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::POW_F32,
RTLIB::POW_F64,
RTLIB::POW_F80,
RTLIB::POW_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
@ -393,80 +393,80 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
"Unsupported power type!");
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::POWI_F32,
RTLIB::POWI_F64,
RTLIB::POWI_F80,
RTLIB::POWI_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::POWI_F32,
RTLIB::POWI_F64,
RTLIB::POWI_F80,
RTLIB::POWI_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::REM_F32,
RTLIB::REM_F64,
RTLIB::REM_F80,
RTLIB::REM_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::REM_F32,
RTLIB::REM_F64,
RTLIB::REM_F80,
RTLIB::REM_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::RINT_F32,
RTLIB::RINT_F64,
RTLIB::RINT_F80,
RTLIB::RINT_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::SIN_F32,
RTLIB::SIN_F64,
RTLIB::SIN_F80,
RTLIB::SIN_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::SQRT_F32,
RTLIB::SQRT_F64,
RTLIB::SQRT_F80,
RTLIB::SQRT_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::SUB_F32,
RTLIB::SUB_F64,
RTLIB::SUB_F80,
RTLIB::SUB_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::SUB_F32,
RTLIB::SUB_F64,
RTLIB::SUB_F80,
RTLIB::SUB_PPCF128),
NVT, Ops, 2, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::TRUNC_F32,
RTLIB::TRUNC_F64,
RTLIB::TRUNC_F80,
RTLIB::TRUNC_PPCF128),
NVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
@ -559,8 +559,9 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
// Sign/zero extend the argument if the libcall takes a larger type.
SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
NVT, N->getOperand(0));
return MakeLibCall(LC, TLI.getTypeToTransformTo(*DAG.getContext(), RVT),
&Op, 1, false, dl);
return TLI.makeLibCall(DAG, LC,
TLI.getTypeToTransformTo(*DAG.getContext(), RVT),
&Op, 1, false, dl);
}
@ -607,92 +608,6 @@ bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
return false;
}
/// SoftenSetCCOperands - Soften the operands of a comparison. This code is
/// shared among BR_CC, SELECT_CC, and SETCC handlers.
void DAGTypeLegalizer::SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
ISD::CondCode &CCCode, DebugLoc dl) {
SDValue LHSInt = GetSoftenedFloat(NewLHS);
SDValue RHSInt = GetSoftenedFloat(NewRHS);
EVT VT = NewLHS.getValueType();
assert((VT == MVT::f32 || VT == MVT::f64) && "Unsupported setcc type!");
// Expand into one or more soft-fp libcall(s).
RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL;
switch (CCCode) {
case ISD::SETEQ:
case ISD::SETOEQ:
LC1 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
break;
case ISD::SETNE:
case ISD::SETUNE:
LC1 = (VT == MVT::f32) ? RTLIB::UNE_F32 : RTLIB::UNE_F64;
break;
case ISD::SETGE:
case ISD::SETOGE:
LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
break;
case ISD::SETLT:
case ISD::SETOLT:
LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
break;
case ISD::SETLE:
case ISD::SETOLE:
LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
break;
case ISD::SETGT:
case ISD::SETOGT:
LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
break;
case ISD::SETUO:
LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
break;
case ISD::SETO:
LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : RTLIB::O_F64;
break;
default:
LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
switch (CCCode) {
case ISD::SETONE:
// SETONE = SETOLT | SETOGT
LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
// Fallthrough
case ISD::SETUGT:
LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
break;
case ISD::SETUGE:
LC2 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
break;
case ISD::SETULT:
LC2 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
break;
case ISD::SETULE:
LC2 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
break;
case ISD::SETUEQ:
LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
break;
default: llvm_unreachable("Do not know how to soften this setcc!");
}
}
// Use the target specific return value for comparions lib calls.
EVT RetVT = TLI.getCmpLibcallReturnType();
SDValue Ops[2] = { LHSInt, RHSInt };
NewLHS = MakeLibCall(LC1, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
NewRHS = DAG.getConstant(0, RetVT);
CCCode = TLI.getCmpLibcallCC(LC1);
if (LC2 != RTLIB::UNKNOWN_LIBCALL) {
SDValue Tmp = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT),
NewLHS, NewRHS, DAG.getCondCode(CCCode));
NewLHS = MakeLibCall(LC2, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
NewLHS = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT), NewLHS,
NewRHS, DAG.getCondCode(TLI.getCmpLibcallCC(LC2)));
NewLHS = DAG.getNode(ISD::OR, dl, Tmp.getValueType(), Tmp, NewLHS);
NewRHS = SDValue();
}
}
SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) {
return DAG.getNode(ISD::BITCAST, N->getDebugLoc(), N->getValueType(0),
GetSoftenedFloat(N->getOperand(0)));
@ -706,15 +621,19 @@ SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall");
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) {
SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
// If SoftenSetCCOperands returned a scalar, we need to compare the result
EVT VT = NewLHS.getValueType();
NewLHS = GetSoftenedFloat(NewLHS);
NewRHS = GetSoftenedFloat(NewRHS);
TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, N->getDebugLoc());
// If softenSetCCOperands returned a scalar, we need to compare the result
// against zero to select between true and false values.
if (NewRHS.getNode() == 0) {
NewRHS = DAG.getConstant(0, NewLHS.getValueType());
@ -733,7 +652,7 @@ SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) {
RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
@ -741,22 +660,26 @@ SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatOp_FP32_TO_FP16(SDNode *N) {
EVT RVT = N->getValueType(0);
RTLIB::Libcall LC = RTLIB::FPROUND_F32_F16;
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc());
return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
// If SoftenSetCCOperands returned a scalar, we need to compare the result
EVT VT = NewLHS.getValueType();
NewLHS = GetSoftenedFloat(NewLHS);
NewRHS = GetSoftenedFloat(NewRHS);
TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, N->getDebugLoc());
// If softenSetCCOperands returned a scalar, we need to compare the result
// against zero to select between true and false values.
if (NewRHS.getNode() == 0) {
NewRHS = DAG.getConstant(0, NewLHS.getValueType());
@ -773,9 +696,13 @@ SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) {
SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
// If SoftenSetCCOperands returned a scalar, use it.
EVT VT = NewLHS.getValueType();
NewLHS = GetSoftenedFloat(NewLHS);
NewRHS = GetSoftenedFloat(NewRHS);
TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, N->getDebugLoc());
// If softenSetCCOperands returned a scalar, use it.
if (NewRHS.getNode() == 0) {
assert(NewLHS.getValueType() == N->getValueType(0) &&
"Unexpected setcc expansion!");
@ -947,13 +874,13 @@ void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N,
void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::DIV_F32,
RTLIB::DIV_F64,
RTLIB::DIV_F80,
RTLIB::DIV_PPCF128),
N->getValueType(0), Ops, 2, false,
N->getDebugLoc());
SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::DIV_F32,
RTLIB::DIV_F64,
RTLIB::DIV_F80,
RTLIB::DIV_PPCF128),
N->getValueType(0), Ops, 2, false,
N->getDebugLoc());
GetPairElements(Call, Lo, Hi);
}
@ -1014,26 +941,26 @@ void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N,
void DAGTypeLegalizer::ExpandFloatRes_FMA(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue Ops[3] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) };
SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::FMA_F32,
RTLIB::FMA_F64,
RTLIB::FMA_F80,
RTLIB::FMA_PPCF128),
N->getValueType(0), Ops, 3, false,
N->getDebugLoc());
SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::FMA_F32,
RTLIB::FMA_F64,
RTLIB::FMA_F80,
RTLIB::FMA_PPCF128),
N->getValueType(0), Ops, 3, false,
N->getDebugLoc());
GetPairElements(Call, Lo, Hi);
}
void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::MUL_F32,
RTLIB::MUL_F64,
RTLIB::MUL_F80,
RTLIB::MUL_PPCF128),
N->getValueType(0), Ops, 2, false,
N->getDebugLoc());
SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::MUL_F32,
RTLIB::MUL_F64,
RTLIB::MUL_F80,
RTLIB::MUL_PPCF128),
N->getValueType(0), Ops, 2, false,
N->getDebugLoc());
GetPairElements(Call, Lo, Hi);
}
@ -1111,13 +1038,13 @@ void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N,
void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::SUB_F32,
RTLIB::SUB_F64,
RTLIB::SUB_F80,
RTLIB::SUB_PPCF128),
N->getValueType(0), Ops, 2, false,
N->getDebugLoc());
SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::SUB_F32,
RTLIB::SUB_F64,
RTLIB::SUB_F80,
RTLIB::SUB_PPCF128),
N->getValueType(0), Ops, 2, false,
N->getDebugLoc());
GetPairElements(Call, Lo, Hi);
}
@ -1193,7 +1120,7 @@ void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
}
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
Hi = MakeLibCall(LC, VT, &Src, 1, true, dl);
Hi = TLI.makeLibCall(DAG, LC, VT, &Src, 1, true, dl);
GetPairElements(Hi, Lo, Hi);
}
@ -1364,7 +1291,7 @@ SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
return MakeLibCall(LC, RVT, &N->getOperand(0), 1, false, dl);
return TLI.makeLibCall(DAG, LC, RVT, &N->getOperand(0), 1, false, dl);
}
SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
@ -1396,7 +1323,8 @@ SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
return MakeLibCall(LC, N->getValueType(0), &N->getOperand(0), 1, false, dl);
return TLI.makeLibCall(DAG, LC, N->getValueType(0), &N->getOperand(0), 1,
false, dl);
}
SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) {

23
lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
View File

@ -1767,7 +1767,8 @@ void DAGTypeLegalizer::ExpandIntRes_FP_TO_SINT(SDNode *N, SDValue &Lo,
SDValue Op = N->getOperand(0);
RTLIB::Libcall LC = RTLIB::getFPTOSINT(Op.getValueType(), VT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-sint conversion!");
SplitInteger(MakeLibCall(LC, VT, &Op, 1, true/*irrelevant*/, dl), Lo, Hi);
SplitInteger(TLI.makeLibCall(DAG, LC, VT, &Op, 1, true/*irrelevant*/, dl),
Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(SDNode *N, SDValue &Lo,
@ -1777,7 +1778,8 @@ void DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(SDNode *N, SDValue &Lo,
SDValue Op = N->getOperand(0);
RTLIB::Libcall LC = RTLIB::getFPTOUINT(Op.getValueType(), VT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-uint conversion!");
SplitInteger(MakeLibCall(LC, VT, &Op, 1, false/*irrelevant*/, dl), Lo, Hi);
SplitInteger(TLI.makeLibCall(DAG, LC, VT, &Op, 1, false/*irrelevant*/, dl),
Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_LOAD(LoadSDNode *N,
@ -1992,7 +1994,8 @@ void DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N,
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported MUL!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(MakeLibCall(LC, VT, Ops, 2, true/*irrelevant*/, dl), Lo, Hi);
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, true/*irrelevant*/, dl),
Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_SADDSUBO(SDNode *Node,
@ -2054,7 +2057,7 @@ void DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N,
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(MakeLibCall(LC, VT, Ops, 2, true, dl), Lo, Hi);
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, true, dl), Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N,
@ -2138,7 +2141,7 @@ void DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N,
if (LC != RTLIB::UNKNOWN_LIBCALL && TLI.getLibcallName(LC)) {
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(MakeLibCall(LC, VT, Ops, 2, isSigned, dl), Lo, Hi);
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, isSigned, dl), Lo, Hi);
return;
}
@ -2221,7 +2224,7 @@ void DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N,
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(MakeLibCall(LC, VT, Ops, 2, true, dl), Lo, Hi);
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, true, dl), Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_TRUNCATE(SDNode *N,
@ -2361,7 +2364,7 @@ void DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N,
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(MakeLibCall(LC, VT, Ops, 2, false, dl), Lo, Hi);
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, false, dl), Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N,
@ -2381,7 +2384,7 @@ void DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N,
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(MakeLibCall(LC, VT, Ops, 2, false, dl), Lo, Hi);
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, false, dl), Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_ZERO_EXTEND(SDNode *N,
@ -2668,7 +2671,7 @@ SDValue DAGTypeLegalizer::ExpandIntOp_SINT_TO_FP(SDNode *N) {
RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), DstVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL &&
"Don't know how to expand this SINT_TO_FP!");
return MakeLibCall(LC, DstVT, &Op, 1, true, N->getDebugLoc());
return TLI.makeLibCall(DAG, LC, DstVT, &Op, 1, true, N->getDebugLoc());
}
SDValue DAGTypeLegalizer::ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo) {
@ -2846,7 +2849,7 @@ SDValue DAGTypeLegalizer::ExpandIntOp_UINT_TO_FP(SDNode *N) {
RTLIB::Libcall LC = RTLIB::getUINTTOFP(SrcVT, DstVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL &&
"Don't know how to expand this UINT_TO_FP!");
return MakeLibCall(LC, DstVT, &Op, 1, true, dl);
return TLI.makeLibCall(DAG, LC, DstVT, &Op, 1, true, dl);
}
SDValue DAGTypeLegalizer::ExpandIntOp_ATOMIC_STORE(SDNode *N) {

40
lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
View File

@ -1020,50 +1020,20 @@ SDValue DAGTypeLegalizer::LibCallify(RTLIB::Libcall LC, SDNode *N,
unsigned NumOps = N->getNumOperands();
DebugLoc dl = N->getDebugLoc();
if (NumOps == 0) {
return MakeLibCall(LC, N->getValueType(0), 0, 0, isSigned, dl);
return TLI.makeLibCall(DAG, LC, N->getValueType(0), 0, 0, isSigned, dl);
} else if (NumOps == 1) {
SDValue Op = N->getOperand(0);
return MakeLibCall(LC, N->getValueType(0), &Op, 1, isSigned, dl);
return TLI.makeLibCall(DAG, LC, N->getValueType(0), &Op, 1, isSigned, dl);
} else if (NumOps == 2) {
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
return MakeLibCall(LC, N->getValueType(0), Ops, 2, isSigned, dl);
return TLI.makeLibCall(DAG, LC, N->getValueType(0), Ops, 2, isSigned, dl);
}
SmallVector<SDValue, 8> Ops(NumOps);
for (unsigned i = 0; i < NumOps; ++i)
Ops[i] = N->getOperand(i);
return MakeLibCall(LC, N->getValueType(0), &Ops[0], NumOps, isSigned, dl);
}
/// MakeLibCall - Generate a libcall taking the given operands as arguments and
/// returning a result of type RetVT.
SDValue DAGTypeLegalizer::MakeLibCall(RTLIB::Libcall LC, EVT RetVT,
const SDValue *Ops, unsigned NumOps,
bool isSigned, DebugLoc dl) {
TargetLowering::ArgListTy Args;
Args.reserve(NumOps);
TargetLowering::ArgListEntry Entry;
for (unsigned i = 0; i != NumOps; ++i) {
Entry.Node = Ops[i];
Entry.Ty = Entry.Node.getValueType().getTypeForEVT(*DAG.getContext());
Entry.isSExt = isSigned;
Entry.isZExt = !isSigned;
Args.push_back(Entry);
}
SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC),
TLI.getPointerTy());
Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext());
TargetLowering::
CallLoweringInfo CLI(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false,
false, 0, TLI.getLibcallCallingConv(LC),
/*isTailCall=*/false,
/*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
Callee, Args, DAG, dl);
std::pair<SDValue,SDValue> CallInfo = TLI.LowerCallTo(CLI);
return CallInfo.first;
return TLI.makeLibCall(DAG, LC, N->getValueType(0),
&Ops[0], NumOps, isSigned, dl);
}
// ExpandChainLibCall - Expand a node into a call to a libcall. Similar to

6
lib/CodeGen/SelectionDAG/LegalizeTypes.h
View File

@ -159,9 +159,6 @@ private:
SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index);
SDValue JoinIntegers(SDValue Lo, SDValue Hi);
SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned);
SDValue MakeLibCall(RTLIB::Libcall LC, EVT RetVT,
const SDValue *Ops, unsigned NumOps, bool isSigned,
DebugLoc dl);
std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC,
SDNode *Node, bool isSigned);
@ -433,9 +430,6 @@ private:
SDValue SoftenFloatOp_SETCC(SDNode *N);
SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo);
void SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
ISD::CondCode &CCCode, DebugLoc dl);
//===--------------------------------------------------------------------===//
// Float Expansion Support: LegalizeFloatTypes.cpp
//===--------------------------------------------------------------------===//

155
lib/CodeGen/SelectionDAG/TargetLowering.cpp
View File

@ -1012,6 +1012,161 @@ MVT::SimpleValueType TargetLowering::getCmpLibcallReturnType() const {
return MVT::i32; // return the default value
}
/// Check whether a given call node is in tail position within its function. If
/// so, it sets Chain to the input chain of the tail call.
bool TargetLowering::isInTailCallPosition(SelectionDAG &DAG, SDNode *Node,
SDValue &Chain) const {
const Function *F = DAG.getMachineFunction().getFunction();
// Conservatively require the attributes of the call to match those of
// the return. Ignore noalias because it doesn't affect the call sequence.
Attribute CallerRetAttr = F->getAttributes().getRetAttributes();
if (AttrBuilder(CallerRetAttr)
.removeAttribute(Attribute::NoAlias).hasAttributes())
return false;
// It's not safe to eliminate the sign / zero extension of the return value.
if (CallerRetAttr.hasAttribute(Attribute::ZExt) ||
CallerRetAttr.hasAttribute(Attribute::SExt))
return false;
// Check if the only use is a function return node.
return isUsedByReturnOnly(Node, Chain);
}
/// Generate a libcall taking the given operands as arguments and returning a
/// result of type RetVT.
SDValue TargetLowering::makeLibCall(SelectionDAG &DAG,
RTLIB::Libcall LC, EVT RetVT,
const SDValue *Ops, unsigned NumOps,
bool isSigned, DebugLoc dl) const {
TargetLowering::ArgListTy Args;
Args.reserve(NumOps);
TargetLowering::ArgListEntry Entry;
for (unsigned i = 0; i != NumOps; ++i) {
Entry.Node = Ops[i];
Entry.Ty = Entry.Node.getValueType().getTypeForEVT(*DAG.getContext());
Entry.isSExt = isSigned;
Entry.isZExt = !isSigned;
Args.push_back(Entry);
}
SDValue Callee = DAG.getExternalSymbol(getLibcallName(LC), getPointerTy());
Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext());
TargetLowering::
CallLoweringInfo CLI(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false,
false, 0, getLibcallCallingConv(LC),
/*isTailCall=*/false,
/*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
Callee, Args, DAG, dl);
std::pair<SDValue,SDValue> CallInfo = LowerCallTo(CLI);
return CallInfo.first;
}
/// SoftenSetCCOperands - Soften the operands of a comparison. This code is
/// shared among BR_CC, SELECT_CC, and SETCC handlers.
void TargetLowering::softenSetCCOperands(SelectionDAG &DAG, EVT VT,
SDValue &NewLHS, SDValue &NewRHS,
ISD::CondCode &CCCode,
DebugLoc dl) const {
assert((VT == MVT::f32 || VT == MVT::f64 || VT == MVT::f128)
&& "Unsupported setcc type!");
// Expand into one or more soft-fp libcall(s).
RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL;
switch (CCCode) {
case ISD::SETEQ:
case ISD::SETOEQ:
LC1 = (VT == MVT::f32) ? RTLIB::OEQ_F32 :
(VT == MVT::f64) ? RTLIB::OEQ_F64 : RTLIB::OEQ_F128;
break;
case ISD::SETNE:
case ISD::SETUNE:
LC1 = (VT == MVT::f32) ? RTLIB::UNE_F32 :
(VT == MVT::f64) ? RTLIB::UNE_F64 : RTLIB::UNE_F128;
break;
case ISD::SETGE:
case ISD::SETOGE:
LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 :
(VT == MVT::f64) ? RTLIB::OGE_F64 : RTLIB::OGE_F128;
break;
case ISD::SETLT:
case ISD::SETOLT:
LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 :
(VT == MVT::f64) ? RTLIB::OLT_F64 : RTLIB::OLT_F128;
break;
case ISD::SETLE:
case ISD::SETOLE:
LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 :
(VT == MVT::f64) ? RTLIB::OLE_F64 : RTLIB::OLE_F128;
break;
case ISD::SETGT:
case ISD::SETOGT:
LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 :
(VT == MVT::f64) ? RTLIB::OGT_F64 : RTLIB::OGT_F128;
break;
case ISD::SETUO:
LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 :
(VT == MVT::f64) ? RTLIB::UO_F64 : RTLIB::UO_F128;
break;
case ISD::SETO:
LC1 = (VT == MVT::f32) ? RTLIB::O_F32 :
(VT == MVT::f64) ? RTLIB::O_F64 : RTLIB::O_F128;
break;
default:
LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 :
(VT == MVT::f64) ? RTLIB::UO_F64 : RTLIB::UO_F128;
switch (CCCode) {
case ISD::SETONE:
// SETONE = SETOLT | SETOGT
LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 :
(VT == MVT::f64) ? RTLIB::OLT_F64 : RTLIB::OLT_F128;
// Fallthrough
case ISD::SETUGT:
LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 :
(VT == MVT::f64) ? RTLIB::OGT_F64 : RTLIB::OGT_F128;
break;
case ISD::SETUGE:
LC2 = (VT == MVT::f32) ? RTLIB::OGE_F32 :
(VT == MVT::f64) ? RTLIB::OGE_F64 : RTLIB::OGE_F128;
break;
case ISD::SETULT:
LC2 = (VT == MVT::f32) ? RTLIB::OLT_F32 :
(VT == MVT::f64) ? RTLIB::OLT_F64 : RTLIB::OLT_F128;
break;
case ISD::SETULE:
LC2 = (VT == MVT::f32) ? RTLIB::OLE_F32 :
(VT == MVT::f64) ? RTLIB::OLE_F64 : RTLIB::OLE_F128;
break;
case ISD::SETUEQ:
LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 :
(VT == MVT::f64) ? RTLIB::OEQ_F64 : RTLIB::OEQ_F128;
break;
default: llvm_unreachable("Do not know how to soften this setcc!");
}
}
// Use the target specific return value for comparions lib calls.
EVT RetVT = getCmpLibcallReturnType();
SDValue Ops[2] = { NewLHS, NewRHS };
NewLHS = makeLibCall(DAG, LC1, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
NewRHS = DAG.getConstant(0, RetVT);
CCCode = getCmpLibcallCC(LC1);
if (LC2 != RTLIB::UNKNOWN_LIBCALL) {
SDValue Tmp = DAG.getNode(ISD::SETCC, dl, getSetCCResultType(RetVT),
NewLHS, NewRHS, DAG.getCondCode(CCCode));
NewLHS = makeLibCall(DAG, LC2, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
NewLHS = DAG.getNode(ISD::SETCC, dl, getSetCCResultType(RetVT), NewLHS,
NewRHS, DAG.getCondCode(getCmpLibcallCC(LC2)));
NewLHS = DAG.getNode(ISD::OR, dl, Tmp.getValueType(), Tmp, NewLHS);
NewRHS = SDValue();
}
}
/// getVectorTypeBreakdown - Vector types are broken down into some number of
/// legal first class types. For example, MVT::v8f32 maps to 2 MVT::v4f32
/// with Altivec or SSE1, or 8 promoted MVT::f64 values with the X86 FP stack.