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2012-04-10[tsan] two more compile-time optimizations:Kostya Serebryany
- don't isntrument reads from constant globals. Saves ~1.5% of instrumented instructions on CPU2006 (counting static instructions, not their execution). - don't insrument reads from vtable (which is a global constant too). Saves ~5%. I did not measure the run-time impact of this, but it is certainly non-negative. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154444 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-10[tsan] compile-time instrumentation: do not instrument a read ifKostya Serebryany
a write to the same temp follows in the same BB. Also add stats printing. On Spec CPU2006 this optimization saves roughly 4% of instrumented reads (which is 3% of all instrumented accesses): Writes : 161216 Reads : 446458 Reads-before-write: 18295 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154418 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26[tsan] treat vtable pointer updates in a special way (requires tbaa); fix a ↵Kostya Serebryany
bug (forgot to return true after instrumenting); make sure the tsan tests are run git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153448 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14[tsan] use FunctionBlackListKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152755 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14[tsan] fix compiler warningsKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150449 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13ThreadSanitizer, a race detector. First LLVM commit.Kostya Serebryany
Clang patch (flags) will follow shortly. The run-time library will also follow, but not immediately. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150423 91177308-0d34-0410-b5e6-96231b3b80d8