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Added CanBeDuplicated(). It returns true if an instruction can be safely duplicated (e.g. during ifcvt).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37605 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2007-06-15 21:13:54 +00:00
parent bedcd3bb9d
commit 61a2598ebe
1 changed files with 7 additions and 0 deletions
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7
include/llvm/Target/TargetInstrInfo.h
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@@ -415,6 +415,13 @@ public:
return false; return false;
} }
/// CanBeDuplicated - Returns true if the instruction can be duplicated
/// without causing unforseenable side-effect (e.g. instructions with unique
/// labels attached).
virtual bool CanBeDuplicated(const MachineInstr *MI) const {
return false;
}
/// isUnpredicatedTerminator - Returns true if the instruction is a /// isUnpredicatedTerminator - Returns true if the instruction is a
/// terminator instruction that has not been predicated. /// terminator instruction that has not been predicated.
virtual bool isUnpredicatedTerminator(const MachineInstr *MI) const; virtual bool isUnpredicatedTerminator(const MachineInstr *MI) const;