Vedant Kumar d91d378e3a Retry: [llvm-profdata] Speed up merging by using a thread pool ...

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

Changes since the initial commit:

  - When handling odd-length inputs, call ThreadPool::wait() before merging the
    last profile. Should fix a race/off-by-one (see r275937).

Differential Revision: https://reviews.llvm.org/D22438

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275938 91177308-0d34-0410-b5e6-96231b3b80d8

2016-07-19 01:17:20 +00:00

..

dsymutil

dsymutil/modules: Reword the warning for static libraries without module caches

2016-05-20 20:36:06 +00:00

gold

[ThinLTO/gold] Perform index-based weak/linkonce resolution

2016-07-14 21:13:24 +00:00

llvm-ar

test: relax the match on the timestamp

2016-07-05 01:14:53 +00:00

llvm-config

Disable all llvm-config tests for now, will investigate later

2016-02-10 17:29:50 +00:00

llvm-cov

[llvm-cov] Place anchors around line numbers in html reports

2016-07-18 17:53:16 +00:00

llvm-cxxdump

[llvm-cxxdump] Remove duplicate code check.

2015-09-15 23:35:32 +00:00

llvm-dwp

llvm-dwp: More error handling around invalid compressed sections

2016-05-23 17:59:17 +00:00

llvm-lit

[tests] Cleanup initialization of test suffixes.

2013-08-16 00:37:11 +00:00

llvm-lto

[ThinLTO] Use valueid instead of bitcode offsets in combined index file

2016-04-27 13:28:35 +00:00

llvm-mc

[Hexagon] Removing XFAIL on Hexagon target.

2015-11-09 06:15:55 +00:00

llvm-nm

Fix some bugs in the posix output of llvm-nm. Which is documented on

2016-03-29 20:18:07 +00:00

llvm-objdump

llvm-objdump: extend __mh_execute_header handling to other special syms

2016-07-14 23:13:03 +00:00

llvm-pdbdump

Update llvm-pdbdump to use subcommands.

2016-06-30 17:42:48 +00:00

llvm-profdata

Retry: [llvm-profdata] Speed up merging by using a thread pool

2016-07-19 01:17:20 +00:00

llvm-readobj

[lanai] Update ELF number to correspond to the assigned number.

2016-06-28 18:22:22 +00:00

llvm-size

Fix llvm-size to exit with non zero when it can’t open a file.

2016-05-02 21:41:03 +00:00

llvm-split

Preserve blockaddress use edges in the module splitter.

2016-03-31 21:55:11 +00:00

llvm-symbolizer

[Symbolize] Check if the PE file has a PDB and emit an error if we can't load it

2016-06-03 20:25:09 +00:00

lto

LTOCodeGenerator: add linkonce(_odr) to "llvm.compiler.used" when present in "MustPreserve" set

2016-05-05 05:14:24 +00:00

sancov

[sancov] Revert r271695 which broke all of the PPC bots.

2016-06-04 03:28:27 +00:00

sanstats

[yaml2obj] Remove --format option in favor of YAML tags

2016-06-27 19:53:53 +00:00

yaml2obj

[yaml2obj] Remove --format option in favor of YAML tags

2016-06-27 19:53:53 +00:00