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Better handling of offsets on frame index references. rdar://8277890

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111585 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2010-08-19 23:52:25 +00:00
parent b08ceb8135
commit e2f556933e
4 changed files with 99 additions and 23 deletions
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20
include/llvm/Target/TargetRegisterInfo.h
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@@ -636,6 +636,12 @@ public:
return false;
}
/// getFrameIndexInstrOffset - Get the offset from the referenced frame
/// index in the instruction, if the is one.
virtual int64_t getFrameIndexInstrOffset(MachineInstr *MI, int Idx) const {
return 0;
}
/// needsFrameBaseReg - Returns true if the instruction's frame index
/// reference would be better served by a base register other than FP
/// or SP. Used by LocalStackFrameAllocation to determine which frame index
@@ -647,8 +653,8 @@ public:
/// materializeFrameBaseRegister - Insert defining instruction(s) for
/// BaseReg to be a pointer to FrameIdx before insertion point I.
virtual void materializeFrameBaseRegister(MachineBasicBlock::iterator I,
unsigned BaseReg,
int FrameIdx) const {
unsigned BaseReg, int FrameIdx,
int64_t Offset) const {
assert(0 && "materializeFrameBaseRegister does not exist on this target");
}
@@ -659,11 +665,11 @@ public:
assert(0 && "resolveFrameIndex does not exist on this target");
}
/// isBaseRegInRange - Determine whether a given base register definition
/// is in range to resolve a frame index.
virtual bool isBaseRegInRange(const MachineInstr *MI, unsigned Reg,
int64_t Offset) const {
assert(0 && "isBaseRegInRange does not exist on this target");
/// isFrameOffsetLegal - Determine whether a given offset immediate is
/// encodable to resolve a frame index.
virtual bool isFrameOffsetLegal(const MachineInstr *MI,
int64_t Offset) const {
assert(0 && "isFrameOffsetLegal does not exist on this target");
return false; // Must return a value in order to compile with VS 2005
}