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498432e86b
Add a "-j" option to llvm-profdata to control the number of threads used. Auto-detect NumThreads when it isn't specified, and avoid spawning threads when they wouldn't be beneficial. I tested this patch using a raw profile produced by clang (147MB). Here is the time taken to merge 4 copies together on my laptop: No thread pool: 112.87s user 5.92s system 97% cpu 2:01.08 total With 2 threads: 134.99s user 26.54s system 164% cpu 1:33.31 total Differential Revision: https://reviews.llvm.org/D22438 llvm-svn: 275921 |
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.. | ||
Inputs | ||
c-general.test | ||
compat.proftext | ||
count-mismatch.proftext | ||
gcc-gcov-sample-profile.test | ||
general.proftext | ||
hash-mismatch.proftext | ||
inline-samples.test | ||
input-filenames.test | ||
lit.local.cfg | ||
multiple-inputs.test | ||
overflow-instr.test | ||
overflow-sample.test | ||
raw-32-bits-be.test | ||
raw-32-bits-le.test | ||
raw-64-bits-be.test | ||
raw-64-bits-le.test | ||
raw-magic-but-no-header.test | ||
raw-two-profiles.test | ||
sample-profile-basic.test | ||
text-dump.test | ||
text-format-errors.test | ||
value-prof.proftext | ||
weight-instr.test | ||
weight-sample.test |