diff options
Diffstat (limited to 'llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp b/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp index 1d0e8be..bb5f1f6 100644 --- a/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp +++ b/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp @@ -989,6 +989,19 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST) .clampMaxNumElements(1, s16, 8) .lower(); + // For fmul reductions we need to split up into individual operations. We + // clamp to 128 bit vectors then to 64bit vectors to produce a cascade of + // smaller types, followed by scalarizing what remains. + getActionDefinitionsBuilder(G_VECREDUCE_FMUL) + .minScalarOrElt(0, MinFPScalar) + .clampMaxNumElements(1, s64, 2) + .clampMaxNumElements(1, s32, 4) + .clampMaxNumElements(1, s16, 8) + .clampMaxNumElements(1, s32, 2) + .clampMaxNumElements(1, s16, 4) + .scalarize(1) + .lower(); + getActionDefinitionsBuilder(G_VECREDUCE_ADD) .legalFor({{s8, v16s8}, {s8, v8s8}, @@ -1137,8 +1150,9 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST) verify(*ST.getInstrInfo()); } -bool AArch64LegalizerInfo::legalizeCustom(LegalizerHelper &Helper, - MachineInstr &MI) const { +bool AArch64LegalizerInfo::legalizeCustom( + LegalizerHelper &Helper, MachineInstr &MI, + LostDebugLocObserver &LocObserver) const { MachineIRBuilder &MIRBuilder = Helper.MIRBuilder; MachineRegisterInfo &MRI = *MIRBuilder.getMRI(); GISelChangeObserver &Observer = Helper.Observer; |