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9 Commits

Author SHA1 Message Date
Kostya Serebryany
0013784dd3 [sanitizer] add another workaround for PR 17409: when over a threshold emit coverage instrumentation as calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228102 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-02-04 01:21:45 +00:00
Evgeniy Stepanov
0b2455c374 [sancov] Fix unspecified constructor order between sancov and asan. 
Sanitizer coverage constructor must run after asan constructor (for each DSO).
Bump constructor priority to guarantee that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227195 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-01-27 15:01:22 +00:00
Kostya Serebryany
dd890d5c5e [asan] change _sanitizer_cov_module_init to accept int* instead of int** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224999 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 19:29:28 +00:00
Kostya Serebryany
b69d796590 [asan] change the coverage collection scheme so that we can easily emit coverage for the entire process as a single bit set, and if coverage_bitset=1 actually emit that bitset 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224789 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-23 22:32:17 +00:00
Kostya Serebryany
95aa8cab27 [sanitizer] prevent function call merging for sanitizer-coverage callbacks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224372 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-16 21:24:15 +00:00
Kostya Serebryany
0fd28b40a4 [msan] allow -fsanitize-coverage=N together with -fsanitize=memory, llvm part 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223312 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-03 23:28:26 +00:00
Kostya Serebryany
678af17920 [asan/coverage] change the way asan coverage instrumentation is done: instead of setting the guard to 1 in the generated code, pass the pointer to guard to __sanitizer_cov and set it there. No user-visible functionality change expected 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222675 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-11-24 18:49:53 +00:00
Kostya Serebryany
0dd5e22d89 [asan] add experimental basic-block tracing to asan-coverage; also fix -fsanitize-coverage=3 which was broken by r221718 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222290 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-11-19 00:22:58 +00:00
Kostya Serebryany
abb3335f6d Move asan-coverage into a separate phase. 
Summary:
This change moves asan-coverage instrumentation
into a separate Module pass.
The other part of the change in clang introduces a new flag
-fsanitize-coverage=N.
Another small patch will update tests in compiler-rt.

With this patch no functionality change is expected except for the flag name.
The following changes will make the coverage instrumentation work with tsan/msan

Test Plan: Run regression tests, chromium.

Reviewers: nlewycky, samsonov

Reviewed By: nlewycky, samsonov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6152

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221718 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-11-11 22:14:37 +00:00