xinxinw1 created this revision.
xinxinw1 added reviewers: beanz, phosek, xiaobai, smeenai.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
With %p, each test file that we're using to generate profile data will make its
own profraw file which is around 60 MB in size. If we have a lot of test files,
that quickly uses a lot of space. Use %4m instead to share the profraw files
used to store the profile data. We use 4 here based on the default value in
https://reviews.llvm.org/source/llvm-github/browse/master/llvm/CMakeLists.txt$604
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D71585
Files:
clang/utils/perf-training/lit.cfg
Index: clang/utils/perf-training/lit.cfg
===================================================================
--- clang/utils/perf-training/lit.cfg
+++ clang/utils/perf-training/lit.cfg
@@ -37,5 +37,5 @@
config.substitutions.append( ('%clang', ' %s %s ' % (config.clang,
sysroot_flags) ) )
config.substitutions.append( ('%test_root', config.test_exec_root ) )
-config.environment['LLVM_PROFILE_FILE'] = 'perf-training-%p.profraw'
+config.environment['LLVM_PROFILE_FILE'] = 'perf-training-%4m.profraw'
Index: clang/utils/perf-training/lit.cfg
===================================================================
--- clang/utils/perf-training/lit.cfg
+++ clang/utils/perf-training/lit.cfg
@@ -37,5 +37,5 @@
config.substitutions.append( ('%clang', ' %s %s ' % (config.clang, sysroot_flags) ) )
config.substitutions.append( ('%test_root', config.test_exec_root ) )
-config.environment['LLVM_PROFILE_FILE'] = 'perf-training-%p.profraw'
+config.environment['LLVM_PROFILE_FILE'] = 'perf-training-%4m.profraw'
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