diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMFrameLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMFrameLowering.cpp | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/llvm/lib/Target/ARM/ARMFrameLowering.cpp index cc026d89432..808a21fac0e 100644 --- a/llvm/lib/Target/ARM/ARMFrameLowering.cpp +++ b/llvm/lib/Target/ARM/ARMFrameLowering.cpp @@ -1479,7 +1479,6 @@ void ARMFrameLowering::determineCalleeSaves(MachineFunction &MF, bool CS1Spilled = false; bool LRSpilled = false; unsigned NumGPRSpills = 0; - unsigned NumFPRSpills = 0; SmallVector<unsigned, 4> UnspilledCS1GPRs; SmallVector<unsigned, 4> UnspilledCS2GPRs; const ARMBaseRegisterInfo *RegInfo = static_cast<const ARMBaseRegisterInfo *>( @@ -1534,17 +1533,8 @@ void ARMFrameLowering::determineCalleeSaves(MachineFunction &MF, CanEliminateFrame = false; } - if (!ARM::GPRRegClass.contains(Reg)) { - if (Spilled) { - if (ARM::SPRRegClass.contains(Reg)) - NumFPRSpills++; - else if (ARM::DPRRegClass.contains(Reg)) - NumFPRSpills += 2; - else if (ARM::QPRRegClass.contains(Reg)) - NumFPRSpills += 4; - } + if (!ARM::GPRRegClass.contains(Reg)) continue; - } if (Spilled) { NumGPRSpills++; @@ -1617,14 +1607,11 @@ void ARMFrameLowering::determineCalleeSaves(MachineFunction &MF, // FIXME: We could add logic to be more precise about negative offsets // and which instructions will need a scratch register for them. Is it // worth the effort and added fragility? - auto ArgStackSize = MF.getInfo<ARMFunctionInfo>()->getArgumentStackSize(); - bool BigStack = - (RS && (MFI->estimateStackSize(MF) + 4 * (NumGPRSpills + NumFPRSpills) + - (!hasFP(MF) ? ArgStackSize : 0) + 16 /* possible paddings */ + - ((hasFP(MF) && AFI->hasStackFrame()) ? 4 : 0) >= - estimateRSStackSizeLimit(MF, this))) || - MFI->hasVarSizedObjects() || - (MFI->adjustsStack() && !canSimplifyCallFramePseudos(MF)); + bool BigStack = (RS && (MFI->estimateStackSize(MF) + + ((hasFP(MF) && AFI->hasStackFrame()) ? 4 : 0) >= + estimateRSStackSizeLimit(MF, this))) || + MFI->hasVarSizedObjects() || + (MFI->adjustsStack() && !canSimplifyCallFramePseudos(MF)); bool ExtraCSSpill = false; if (BigStack || !CanEliminateFrame || RegInfo->cannotEliminateFrame(MF)) { |
