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[AMDGPU] Remove NoInfsFPMath uses (#163028)

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Only `ninf` should be used.
This commit is contained in:
paperchalice 2025-10-13 19:15:49 +08:00 committed by GitHub
parent 8a436b942a
commit 14a42e64cf
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GPG Key ID: B5690EEEBB952194
2 changed files with 5 additions and 8 deletions
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7
llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
View File

@ -2833,8 +2833,8 @@ SDValue AMDGPUTargetLowering::LowerFLOGCommon(SDValue Op,
R = getMad(DAG, DL, VT, YH, CH, Mad1);
}
const bool IsFiniteOnly = (Flags.hasNoNaNs() || Options.NoNaNsFPMath) &&
(Flags.hasNoInfs() || Options.NoInfsFPMath);
const bool IsFiniteOnly =
(Flags.hasNoNaNs() || Options.NoNaNsFPMath) && Flags.hasNoInfs();
// TODO: Check if known finite from source value.
if (!IsFiniteOnly) {
@ -3161,9 +3161,8 @@ SDValue AMDGPUTargetLowering::lowerFEXP(SDValue Op, SelectionDAG &DAG) const {
DAG.getSetCC(SL, SetCCVT, X, UnderflowCheckConst, ISD::SETOLT);
R = DAG.getNode(ISD::SELECT, SL, VT, Underflow, Zero, R);
const auto &Options = getTargetMachine().Options;
if (!Flags.hasNoInfs() && !Options.NoInfsFPMath) {
if (!Flags.hasNoInfs()) {
SDValue OverflowCheckConst =
DAG.getConstantFP(IsExp10 ? 0x1.344136p+5f : 0x1.62e430p+6f, SL, VT);
SDValue Overflow =

6
llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
View File

@ -3575,7 +3575,7 @@ bool AMDGPULegalizerInfo::legalizeFlogCommon(MachineInstr &MI,
const bool IsFiniteOnly =
(MI.getFlag(MachineInstr::FmNoNans) || TM.Options.NoNaNsFPMath) &&
(MI.getFlag(MachineInstr::FmNoInfs) || TM.Options.NoInfsFPMath);
MI.getFlag(MachineInstr::FmNoInfs);
if (!IsFiniteOnly) {
// Expand isfinite(x) => fabs(x) < inf
@ -3864,9 +3864,7 @@ bool AMDGPULegalizerInfo::legalizeFExp(MachineInstr &MI,
R = B.buildSelect(Ty, Underflow, Zero, R);
const auto &Options = MF.getTarget().Options;
if (!(Flags & MachineInstr::FmNoInfs) && !Options.NoInfsFPMath) {
if (!(Flags & MachineInstr::FmNoInfs)) {
auto OverflowCheckConst =
B.buildFConstant(Ty, IsExp10 ? 0x1.344136p+5f : 0x1.62e430p+6f);