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Add MachineRegisterInfo::use_empty.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52451 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-06-18 07:47:55 +00:00
parent 625986afea
commit ce049437d6
1 changed files with 4 additions and 0 deletions
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4
include/llvm/CodeGen/MachineRegisterInfo.h
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@@ -90,6 +90,10 @@ public:
} }
static use_iterator use_end() { return use_iterator(0); } static use_iterator use_end() { return use_iterator(0); }
/// use_empty - Return true if there are no instructions using the specified
/// register.
bool use_empty(unsigned RegNo) const { return use_begin(RegNo) == use_end(); }
/// replaceRegWith - Replace all instances of FromReg with ToReg in the /// replaceRegWith - Replace all instances of FromReg with ToReg in the
/// machine function. This is like llvm-level X->replaceAllUsesWith(Y), /// machine function. This is like llvm-level X->replaceAllUsesWith(Y),