diff options
Diffstat (limited to 'llvm/lib/Target/ARM')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMISelLowering.h | 10 | ||||
| -rw-r--r-- | llvm/lib/Target/ARM/ARMSubtarget.cpp | 6 |
2 files changed, 15 insertions, 1 deletions
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.h b/llvm/lib/Target/ARM/ARMISelLowering.h index fa130a1..26ff54c 100644 --- a/llvm/lib/Target/ARM/ARMISelLowering.h +++ b/llvm/lib/Target/ARM/ARMISelLowering.h @@ -775,6 +775,16 @@ class VectorType; bool shouldFoldConstantShiftPairToMask(const SDNode *N, CombineLevel Level) const override; + /// Return true if it is profitable to fold a pair of shifts into a mask. + bool shouldFoldMaskToVariableShiftPair(SDValue Y) const override { + EVT VT = Y.getValueType(); + + if (VT.isVector()) + return false; + + return VT.getScalarSizeInBits() <= 32; + } + bool shouldFoldSelectWithIdentityConstant(unsigned BinOpcode, EVT VT, unsigned SelectOpcode, SDValue X, SDValue Y) const override; diff --git a/llvm/lib/Target/ARM/ARMSubtarget.cpp b/llvm/lib/Target/ARM/ARMSubtarget.cpp index 3329bea..58bc338 100644 --- a/llvm/lib/Target/ARM/ARMSubtarget.cpp +++ b/llvm/lib/Target/ARM/ARMSubtarget.cpp @@ -225,7 +225,11 @@ void ARMSubtarget::initSubtargetFeatures(StringRef CPU, StringRef FS) { (isTargetDarwin() || DM == DenormalMode::getPreserveSign())) HasNEONForFP = true; - if (isRWPI()) + const ARM::ArchKind Arch = ARM::parseArch(TargetTriple.getArchName()); + if (isRWPI() || + (isTargetIOS() && + (Arch == ARM::ArchKind::ARMV6K || Arch == ARM::ArchKind::ARMV6) && + TargetTriple.isOSVersionLT(3, 0))) ReserveR9 = true; // If MVEVectorCostFactor is still 0 (has not been set to anything else), default it to 2 |