[PATCH] D37597: [ubsan] Function Sanitizer: Don't require writable text segments

[Vedant Kumar via Phabricator via cfe-commits]

vsk updated this revision to Diff 114303.
vsk edited the summary of this revision.
vsk added a comment.

Address review feedback:

- Enable this change on all platforms.
- Bump the function signature version.
- Store the indirect RTTI pointer as an IntPtrTy. This saves a "ptrtoint" instruction. Truncating to Int32Ty should be possible, but causes dyld to crash, and also requires an extra sign-extension.


https://reviews.llvm.org/D37597

Files:
  lib/CodeGen/CGExpr.cpp
  lib/CodeGen/CodeGenFunction.cpp
  lib/CodeGen/CodeGenFunction.h
  lib/CodeGen/TargetInfo.cpp
  test/CodeGenCXX/catch-undef-behavior.cpp

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