diff options
Diffstat (limited to 'lib/Target/ARM')
-rw-r--r-- | lib/Target/ARM/ARMBaseInstrInfo.cpp | 4 | ||||
-rw-r--r-- | lib/Target/ARM/ARMBaseRegisterInfo.cpp | 8 | ||||
-rw-r--r-- | lib/Target/ARM/ARMBaseRegisterInfo.h | 1 | ||||
-rw-r--r-- | lib/Target/ARM/ARMTargetMachine.cpp | 4 |
4 files changed, 11 insertions, 6 deletions
diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp index 969c4a4..fd46a4a 100644 --- a/lib/Target/ARM/ARMBaseInstrInfo.cpp +++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp @@ -715,7 +715,7 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, RC == ARM::QPR_VFP2RegisterClass) && "Unknown regclass!"); // FIXME: Neon instructions should support predicates if (Align >= 16 - && (getRegisterInfo().needsStackRealignment(MF))) { + && (getRegisterInfo().canRealignStack(MF))) { AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VST1q64)) .addFrameIndex(FI).addImm(0).addImm(0).addImm(128) .addMemOperand(MMO) @@ -760,7 +760,7 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, RC == ARM::QPR_VFP2RegisterClass || RC == ARM::QPR_8RegisterClass) && "Unknown regclass!"); if (Align >= 16 - && (getRegisterInfo().needsStackRealignment(MF))) { + && (getRegisterInfo().canRealignStack(MF))) { AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLD1q64), DestReg) .addFrameIndex(FI).addImm(0).addImm(0).addImm(128) .addMemOperand(MMO)); diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp index f1b6e1d..ba9e044 100644 --- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp +++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp @@ -484,6 +484,14 @@ bool ARMBaseRegisterInfo::hasFP(const MachineFunction &MF) const { MFI->isFrameAddressTaken()); } +bool ARMBaseRegisterInfo::canRealignStack(const MachineFunction &MF) const { + const MachineFrameInfo *MFI = MF.getFrameInfo(); + const ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>(); + return (RealignStack && + !AFI->isThumb1OnlyFunction() && + !MFI->hasVarSizedObjects()); +} + bool ARMBaseRegisterInfo:: needsStackRealignment(const MachineFunction &MF) const { const MachineFrameInfo *MFI = MF.getFrameInfo(); diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.h b/lib/Target/ARM/ARMBaseRegisterInfo.h index 2788d07..f5ca25c 100644 --- a/lib/Target/ARM/ARMBaseRegisterInfo.h +++ b/lib/Target/ARM/ARMBaseRegisterInfo.h @@ -96,6 +96,7 @@ public: bool hasFP(const MachineFunction &MF) const; + bool canRealignStack(const MachineFunction &MF) const; bool needsStackRealignment(const MachineFunction &MF) const; bool cannotEliminateFrame(const MachineFunction &MF) const; diff --git a/lib/Target/ARM/ARMTargetMachine.cpp b/lib/Target/ARM/ARMTargetMachine.cpp index 1c6fca7..4d20a5c 100644 --- a/lib/Target/ARM/ARMTargetMachine.cpp +++ b/lib/Target/ARM/ARMTargetMachine.cpp @@ -93,10 +93,6 @@ bool ARMBaseTargetMachine::addPreRegAlloc(PassManagerBase &PM, if (Subtarget.hasNEON()) PM.add(createNEONPreAllocPass()); - // Calculate and set max stack object alignment early, so we can decide - // whether we will need stack realignment (and thus FP). - PM.add(createMaxStackAlignmentCalculatorPass()); - // FIXME: temporarily disabling load / store optimization pass for Thumb1. if (OptLevel != CodeGenOpt::None && !Subtarget.isThumb1Only()) PM.add(createARMLoadStoreOptimizationPass(true)); |