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fuchsia / third_party / llvm-project / cb5c7bd9ebfa004751a1b8815a281f51de2083dc
commitcb5c7bd9ebfa004751a1b8815a281f51de2083dc[log] [tgz]
authorErik Pilkington <erik.pilkington@gmail.com>Wed Apr 10 23:42:11 2019 +0000
committerErik Pilkington <erik.pilkington@gmail.com>Wed Apr 10 23:42:11 2019 +0000
treeafab549d77bf0b2dac02196a236c12667eea244d
parent2f46de8c0b253e40ea84bb99e6a77079abd86daa [diff]
Fix a hang when lowering __builtin_dynamic_object_size

If the ObjectSizeOffsetEvaluator fails to fold the object size call, then it may
litter some unused instructions in the function. When done repeatably in
InstCombine, this results in an infinite loop. Fix this by tracking the set of
instructions that were inserted, then removing them on failure.

rdar://49172227

Differential revision: https://reviews.llvm.org/D60298

llvm-svn: 358146
4 files changed
tree: afab549d77bf0b2dac02196a236c12667eea244d
  1. clang/
  2. clang-tools-extra/
  3. compiler-rt/
  4. debuginfo-tests/
  5. libclc/
  6. libcxx/
  7. libcxxabi/
  8. libunwind/
  9. lld/
  10. lldb/
  11. llgo/
  12. llvm/
  13. openmp/
  14. parallel-libs/
  15. polly/
  16. pstl/
  17. .arcconfig
  18. .clang-format
  19. .clang-tidy
  20. .gitignore
  21. README.md
README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.