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IR: Return unique_ptr from MDNode::getTemporary()

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Change `MDTuple::getTemporary()` and `MDLocation::getTemporary()` to
return (effectively) `std::unique_ptr<T, MDNode::deleteTemporary>`, and
clean up call sites.  (For now, `DIBuilder` call sites just call
`release()` immediately.)

There's an accompanying change in each of clang and polly to use the new
API.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226504 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-01-19 21:30:18 +00:00
parent a23cc6a1ea
commit f9eaea701d
10 changed files with 77 additions and 81 deletions
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6
lib/IR/MDBuilder.cpp
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@ -68,9 +68,9 @@ MDNode *MDBuilder::createRange(const APInt &Lo, const APInt &Hi) {
MDNode *MDBuilder::createAnonymousAARoot(StringRef Name, MDNode *Extra) {
// To ensure uniqueness the root node is self-referential.
MDNode *Dummy = MDNode::getTemporary(Context, None);
auto Dummy = MDNode::getTemporary(Context, None);
SmallVector<Metadata *, 3> Args(1, Dummy);
SmallVector<Metadata *, 3> Args(1, Dummy.get());
if (Extra)
Args.push_back(Extra);
if (!Name.empty())
@ -82,7 +82,7 @@ MDNode *MDBuilder::createAnonymousAARoot(StringRef Name, MDNode *Extra) {
// !1 = metadata !{metadata !0} <- root
// Replace the dummy operand with the root node itself and delete the dummy.
Root->replaceOperandWith(0, Root);
MDNode::deleteTemporary(Dummy);
// We now have
// !1 = metadata !{metadata !1} <- self-referential root
return Root;