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author | Bill Wendling <isanbard@gmail.com> | 2013-06-17 20:41:25 +0000 |
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committer | Bill Wendling <isanbard@gmail.com> | 2013-06-17 20:41:25 +0000 |
commit | d10fa8b1caf010fe4943ae5526c2c3b921339f72 (patch) | |
tree | 2ce25013aca5dbd5bd2b6b0b89d981cc05b5917e /lib/CodeGen/MachineFunction.cpp | |
parent | 99ccd5d5ef01881b3464b6e6a5b13b9d2c77387e (diff) | |
download | llvm-d10fa8b1caf010fe4943ae5526c2c3b921339f72.tar.gz llvm-d10fa8b1caf010fe4943ae5526c2c3b921339f72.tar.bz2 llvm-d10fa8b1caf010fe4943ae5526c2c3b921339f72.tar.xz |
Directly access objects which may change during compilation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184121 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineFunction.cpp')
-rw-r--r-- | lib/CodeGen/MachineFunction.cpp | 53 |
1 files changed, 37 insertions, 16 deletions
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp index 891e3b1004..80cfb5e023 100644 --- a/lib/CodeGen/MachineFunction.cpp +++ b/lib/CodeGen/MachineFunction.cpp @@ -55,23 +55,27 @@ MachineFunction::MachineFunction(const Function *F, const TargetMachine &TM, GCModuleInfo* gmi) : Fn(F), Target(TM), Ctx(mmi.getContext()), MMI(mmi), GMI(gmi) { if (TM.getRegisterInfo()) - RegInfo = new (Allocator) MachineRegisterInfo(*TM.getRegisterInfo()); + RegInfo = new (Allocator) MachineRegisterInfo(TM); else RegInfo = 0; + MFInfo = 0; - FrameInfo = new (Allocator) MachineFrameInfo(*TM.getFrameLowering(), - TM.Options.RealignStack); + FrameInfo = new (Allocator) MachineFrameInfo(TM, TM.Options.RealignStack); + if (Fn->getAttributes().hasAttribute(AttributeSet::FunctionIndex, Attribute::StackAlignment)) FrameInfo->ensureMaxAlignment(Fn->getAttributes(). getStackAlignment(AttributeSet::FunctionIndex)); - ConstantPool = new (Allocator) MachineConstantPool(TM.getDataLayout()); + + ConstantPool = new (Allocator) MachineConstantPool(TM); Alignment = TM.getTargetLowering()->getMinFunctionAlignment(); + // FIXME: Shouldn't use pref alignment if explicit alignment is set on Fn. if (!Fn->getAttributes().hasAttribute(AttributeSet::FunctionIndex, Attribute::OptimizeForSize)) Alignment = std::max(Alignment, TM.getTargetLowering()->getPrefFunctionAlignment()); + FunctionNumber = FunctionNum; JumpTableInfo = 0; } @@ -457,11 +461,15 @@ MCSymbol *MachineFunction::getPICBaseSymbol() const { // MachineFrameInfo implementation //===----------------------------------------------------------------------===// +const TargetFrameLowering *MachineFrameInfo::getFrameLowering() const { + return TM.getFrameLowering(); +} + /// ensureMaxAlignment - Make sure the function is at least Align bytes /// aligned. void MachineFrameInfo::ensureMaxAlignment(unsigned Align) { - if (!TFI.isStackRealignable() || !RealignOption) - assert(Align <= TFI.getStackAlignment() && + if (!getFrameLowering()->isStackRealignable() || !RealignOption) + assert(Align <= getFrameLowering()->getStackAlignment() && "For targets without stack realignment, Align is out of limit!"); if (MaxAlignment < Align) MaxAlignment = Align; } @@ -483,8 +491,10 @@ static inline unsigned clampStackAlignment(bool ShouldClamp, unsigned Align, int MachineFrameInfo::CreateStackObject(uint64_t Size, unsigned Alignment, bool isSS, bool MayNeedSP, const AllocaInst *Alloca) { assert(Size != 0 && "Cannot allocate zero size stack objects!"); - Alignment = clampStackAlignment(!TFI.isStackRealignable() || !RealignOption, - Alignment, TFI.getStackAlignment()); + Alignment = + clampStackAlignment(!getFrameLowering()->isStackRealignable() || + !RealignOption, + Alignment, getFrameLowering()->getStackAlignment()); Objects.push_back(StackObject(Size, Alignment, 0, false, isSS, MayNeedSP, Alloca)); int Index = (int)Objects.size() - NumFixedObjects - 1; @@ -499,8 +509,10 @@ int MachineFrameInfo::CreateStackObject(uint64_t Size, unsigned Alignment, /// int MachineFrameInfo::CreateSpillStackObject(uint64_t Size, unsigned Alignment) { - Alignment = clampStackAlignment(!TFI.isStackRealignable() || !RealignOption, - Alignment, TFI.getStackAlignment()); + Alignment = + clampStackAlignment(!getFrameLowering()->isStackRealignable() || + !RealignOption, + Alignment, getFrameLowering()->getStackAlignment()); CreateStackObject(Size, Alignment, true, false); int Index = (int)Objects.size() - NumFixedObjects - 1; ensureMaxAlignment(Alignment); @@ -514,8 +526,10 @@ int MachineFrameInfo::CreateSpillStackObject(uint64_t Size, /// int MachineFrameInfo::CreateVariableSizedObject(unsigned Alignment) { HasVarSizedObjects = true; - Alignment = clampStackAlignment(!TFI.isStackRealignable() || !RealignOption, - Alignment, TFI.getStackAlignment()); + Alignment = + clampStackAlignment(!getFrameLowering()->isStackRealignable() || + !RealignOption, + Alignment, getFrameLowering()->getStackAlignment()); Objects.push_back(StackObject(0, Alignment, 0, false, false, true, 0)); ensureMaxAlignment(Alignment); return (int)Objects.size()-NumFixedObjects-1; @@ -533,10 +547,12 @@ int MachineFrameInfo::CreateFixedObject(uint64_t Size, int64_t SPOffset, // the incoming frame position. If the frame object is at offset 32 and // the stack is guaranteed to be 16-byte aligned, then we know that the // object is 16-byte aligned. - unsigned StackAlign = TFI.getStackAlignment(); + unsigned StackAlign = getFrameLowering()->getStackAlignment(); unsigned Align = MinAlign(SPOffset, StackAlign); - Align = clampStackAlignment(!TFI.isStackRealignable() || !RealignOption, - Align, TFI.getStackAlignment()); + Align = + clampStackAlignment(!getFrameLowering()->isStackRealignable() || + !RealignOption, + Align, getFrameLowering()->getStackAlignment()); Objects.insert(Objects.begin(), StackObject(Size, Align, SPOffset, Immutable, /*isSS*/ false, /*NeedSP*/ false, @@ -770,6 +786,10 @@ void MachineJumpTableInfo::dump() const { print(dbgs()); } void MachineConstantPoolValue::anchor() { } +const DataLayout *MachineConstantPool::getDataLayout() const { + return TM.getDataLayout(); +} + Type *MachineConstantPoolEntry::getType() const { if (isMachineConstantPoolEntry()) return Val.MachineCPVal->getType(); @@ -851,7 +871,8 @@ unsigned MachineConstantPool::getConstantPoolIndex(const Constant *C, // FIXME, this could be made much more efficient for large constant pools. for (unsigned i = 0, e = Constants.size(); i != e; ++i) if (!Constants[i].isMachineConstantPoolEntry() && - CanShareConstantPoolEntry(Constants[i].Val.ConstVal, C, TD)) { + CanShareConstantPoolEntry(Constants[i].Val.ConstVal, C, + getDataLayout())) { if ((unsigned)Constants[i].getAlignment() < Alignment) Constants[i].Alignment = Alignment; return i; |