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Added MachineInstr::isRegTiedToDefOperand to check for two-addressness.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67335 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-03-19 20:30:06 +00:00
parent 817046e1f1
commit a24752ff43
6 changed files with 42 additions and 24 deletions
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5
include/llvm/CodeGen/MachineInstr.h
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@@ -245,6 +245,11 @@ public:
/// check if the register def is a re-definition due to two addr elimination.
bool isRegReDefinedByTwoAddr(unsigned DefIdx) const;
/// isRegTiedToDefOperand - Return true if the use operand of the specified
/// index is tied to an def operand. It also returns the def operand index by
/// reference if DefOpIdx is not null.
bool isRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx = 0);
/// copyKillDeadInfo - Copies kill / dead operand properties from MI.
///
void copyKillDeadInfo(const MachineInstr *MI);