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| author | Kostya Serebryany <kcc@google.com> | 2012-04-10 18:18:56 +0000 |
|---|---|---|
| committer | Kostya Serebryany <kcc@google.com> | 2012-04-10 18:18:56 +0000 |
| commit | 2076af0184bd38185a719ea07cb10a90e8565a89 (patch) | |
| tree | 539c661f5cf55768452c59ba10992183d7f88fed /test/CodeGen/X86/avx-shuffle.ll | |
| parent | 18112d83e7d54597bcd5870fb411c7997e02bc1e (diff) | |
| download | external_llvm-2076af0184bd38185a719ea07cb10a90e8565a89.zip external_llvm-2076af0184bd38185a719ea07cb10a90e8565a89.tar.gz external_llvm-2076af0184bd38185a719ea07cb10a90e8565a89.tar.bz2 | |
[tsan] compile-time instrumentation: do not instrument a read if
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
Diffstat (limited to 'test/CodeGen/X86/avx-shuffle.ll')
0 files changed, 0 insertions, 0 deletions