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| author | Sanjoy Das <sanjoy@playingwithpointers.com> | 2015-03-26 19:25:01 +0000 |
|---|---|---|
| committer | Sanjoy Das <sanjoy@playingwithpointers.com> | 2015-03-26 19:25:01 +0000 |
| commit | 784545fba0e1fcbb5e12cde76d13d91fd0972323 (patch) | |
| tree | b38cec27e9e76205003cd6e11e02982fce4cf53d /docs/CMake.rst | |
| parent | 55a5cb1a4ddf86adfbc1fa8eb157dd0efb4972df (diff) | |
[ADT][CMake][AutoConf] Fail-fast iterators for DenseMap
Summary:
This patch is an attempt at making `DenseMapIterator`s "fail-fast".
Fail-fast iterators that have been invalidated due to insertion into
the host `DenseMap` deterministically trip an assert (in debug mode)
on access, instead of non-deterministically hitting memory corruption
issues.
Enabling fail-fast iterators breaks the LLVM C++ ABI, so they are
predicated on `LLVM_ENABLE_ABI_BREAKING_CHECKS`.
`LLVM_ENABLE_ABI_BREAKING_CHECKS` by default flips with
`LLVM_ENABLE_ASSERTS`, but can be clamped to ON or OFF using the CMake /
autoconf build system.
Reviewers: chandlerc, dexonsmith, rnk, zturner
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8351
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233310 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/CMake.rst')
| -rw-r--r-- | docs/CMake.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/docs/CMake.rst b/docs/CMake.rst index 4d96466c901..b9e473fab2b 100644 --- a/docs/CMake.rst +++ b/docs/CMake.rst @@ -270,6 +270,15 @@ LLVM-specific variables **LLVM_ENABLE_WERROR**:BOOL Stop and fail build, if a compiler warning is triggered. Defaults to OFF. +**LLVM_ABI_BREAKING_CHECKS**:STRING + Used to decide if LLVM should be built with ABI breaking checks or + not. Allowed values are `WITH_ASSERTS` (default), `FORCE_ON` and + `FORCE_OFF`. `WITH_ASSERTS` turns on ABI breaking checks in an + assertion enabled build. `FORCE_ON` (`FORCE_OFF`) turns them on + (off) irrespective of whether normal (`NDEBUG` based) assertions are + enabled or not. A version of LLVM built with ABI breaking checks + is not ABI compatible with a version built without it. + **LLVM_BUILD_32_BITS**:BOOL Build 32-bits executables and libraries on 64-bits systems. This option is available only on some 64-bits unix systems. Defaults to OFF. |