llvm-6502/include
Duncan P. N. Exon Smith 027898a77a IR: Add MDNode::replaceWithPermanent()
Add new API for converting temporaries that may self-reference.
Self-referencing nodes are not allowed to be uniqued, so sending them
into `replaceWithUniqued()` is dangerous (and this commit adds
assertions that prevent it).

`replaceWithPermanent()` has similar semantics to `get()` followed by
calls to `replaceOperandWith()`.  In particular, if there's a
self-reference, it returns a distinct node; otherwise, it returns a
uniqued one.  Like `replaceWithUniqued()` and `replaceWithDistinct()`
(well, it calls out to them) it mutates the temporary node in place if
possible, only calling `replaceAllUsesWith()` on a uniquing collision.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228726 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:13:46 +00:00
..
llvm IR: Add MDNode::replaceWithPermanent() 2015-02-10 19:13:46 +00:00
llvm-c Fix warning: "function declaration isn’t a prototype" 2015-02-04 13:30:28 +00:00