forked from OSchip/llvm-project
8b08d2c5c8
Summary: This test was stat()'ing large swaths of /usr/lib hundreds of times, as every invocation of matchesConditionally*() created a new Linux toolchain. In addition to being slow, perf indicated this was causing substantial contention in the kernel. Something is...interesting in the kernel, as without this patch I sometimes see ~11m spent in the kernel, and sometimes ~5m. This corresponds to bimodal ninja check-clang times of ~30s and ~20s. It's not clear to me exactly what causes the bimodality. In any case, this change makes this test run in 2.5s, down from 17s, and it seems to cause us to get the 20s ninja check-clang time unconditionally. Reviewers: chandlerc Subscribers: cfe-commits, klimek Differential Revision: http://reviews.llvm.org/D21810 llvm-svn: 274257 |
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| .. | ||
| AST | ||
| ASTMatchers | ||
| Basic | ||
| CodeGen | ||
| Driver | ||
| Format | ||
| Frontend | ||
| Lex | ||
| Rewrite | ||
| Sema | ||
| StaticAnalyzer | ||
| Tooling | ||
| libclang | ||
| CMakeLists.txt | ||