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authorDuncan P. N. Exon Smith <dexonsmith@apple.com>2015-04-06 23:18:49 +0000
committerDuncan P. N. Exon Smith <dexonsmith@apple.com>2015-04-06 23:18:49 +0000
commit9d1cf4c1663ccd3c6b6168973215fad0f297ca35 (patch)
treee7900851342fcf73e633889a0a5344d3534598c1 /llvm/lib/Analysis/ModuleDebugInfoPrinter.cpp
parentb6030b9dbf1762877795fabbea7c7b4b7dbf627e (diff)
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IR: Stop using DIDescriptor::is*() and auto-casting
`DIDescriptor`'s subclasses allow construction from incompatible pointers, and `DIDescriptor` defines a series of `isa<>`-like functions (e.g., `isCompileUnit()` instead of `isa<MDCompileUnit>()`) that clients tend to use like this: if (DICompileUnit(N).isCompileUnit()) foo(DICompileUnit(N)); These construction patterns work together to make `DIDescriptor` behave differently from normal pointers. Instead, use built-in `isa<>`, `dyn_cast<>`, etc., and only build `DIDescriptor`s from pointers that are valid for their type. I've split this into a few commits for different parts of LLVM and clang (to decrease the patch size and increase the chance of review). Generally the changes I made were NFC, but in a few places I made things stricter if it made sense from the surrounded code. Eventually a follow-up commit will remove the API for the "old" way. llvm-svn: 234255
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