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op_iterator-ify dropAllReferences

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52215 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif 2008-06-11 11:45:26 +00:00
parent edfcf598fa
commit 37e5484004
1 changed files with 4 additions and 5 deletions
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9
include/llvm/User.h
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@ -278,15 +278,14 @@ public:
// dropAllReferences() - This function is in charge of "letting go" of all
// objects that this User refers to. This allows one to
// 'delete' a whole class at a time, even though there may be circular
// references... first all references are dropped, and all use counts go to
// zero. Then everything is delete'd for real. Note that no operations are
// references... First all references are dropped, and all use counts go to
// zero. Then everything is deleted for real. Note that no operations are
// valid on an object that has "dropped all references", except operator
// delete.
//
void dropAllReferences() {
Use *OL = OperandList;
for (unsigned i = 0, e = NumOperands; i != e; ++i)
OL[i].set(0);
for (op_iterator i = op_begin(), e = op_end(); i != e; ++i)
i->set(0);
}
/// replaceUsesOfWith - Replaces all references to the "From" definition with