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add a new isStoreToStackSlot method

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25909 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-02-02 19:55:29 +00:00
parent d395d0984f
commit 679836360a
1 changed files with 10 additions and 1 deletions
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11
include/llvm/Target/MRegisterInfo.h
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@ -262,12 +262,21 @@ public:
/// isLoadFromStackSlot - If the specified machine instruction is a direct
/// load from a stack slot, return the virtual or physical register number of
/// the destination along with the FrameIndex of the loaded stack slot. If
/// not, return 0. This predicate must return false if the instruction has
/// not, return 0. This predicate must return 0 if the instruction has
/// any side effects other than loading from the stack slot.
virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const{
return 0;
}
/// isStoreToStackSlot - If the specified machine instruction is a direct
/// store to a stack slot, return the virtual or physical register number of
/// the source reg along with the FrameIndex of the loaded stack slot. If
/// not, return 0. This predicate must return 0 if the instruction has
/// any side effects other than storing to the stack slot.
virtual unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const {
return 0;
}
/// foldMemoryOperand - Attempt to fold a load or store of the
/// specified stack slot into the specified machine instruction for
/// the specified operand. If this is possible, a new instruction