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

..

AttributesTest.cpp

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CMakeLists.txt

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ConstantRangeTest.cpp

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ConstantsTest.cpp

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DebugInfoTest.cpp

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DominatorTreeTest.cpp

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InstructionsTest.cpp

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IRBuilderTest.cpp

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LegacyPassManagerTest.cpp

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Makefile

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MDBuilderTest.cpp

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MetadataTest.cpp

IR: Add MDNode::replaceWithPermanent()

2015-02-10 19:13:46 +00:00

PassManagerTest.cpp

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PatternMatch.cpp

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TypeBuilderTest.cpp

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TypesTest.cpp

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UserTest.cpp

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UseTest.cpp

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ValueHandleTest.cpp

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ValueMapTest.cpp

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ValueTest.cpp

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VerifierTest.cpp

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WaymarkTest.cpp

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