kastiglione created this revision. kastiglione added reviewers: JDevlieghere, mib, jasonmolenda. Herald added a project: All. kastiglione requested review of this revision. Herald added a project: LLDB. Herald added a subscriber: lldb-commits.
While investigating slow tests, I noticed that `TestLldbGdbServer.py` (and other tests) have slow compile times for the targets they build to test with. This change speeds up `TestLldbGdbServer.py` by enabling clang modules for the compilation. After seeing that compilation was slow, I ran with `-ftime-trace` and saw that a significant amount of compilation time was spent parsing `iostream` and other libc++ headers. On my machine, this reduces `TestLldbGdbServer.py` from: Before: > Ran 84 tests in 223.308s After: > Ran 84 tests in 131.672s Repository: rG LLVM Github Monorepo https://reviews.llvm.org/D132868 Files: lldb/test/API/tools/lldb-server/Makefile Index: lldb/test/API/tools/lldb-server/Makefile =================================================================== --- lldb/test/API/tools/lldb-server/Makefile +++ lldb/test/API/tools/lldb-server/Makefile @@ -1,6 +1,7 @@ CFLAGS_EXTRAS := -D__STDC_LIMIT_MACROS -D__STDC_FORMAT_MACROS ENABLE_THREADS := YES CXX_SOURCES := main.cpp -MAKE_DSYM :=NO +MAKE_DSYM := NO +CXXFLAGS_EXTRAS := -fmodules -fcxx-modules -fmodules-cache-path=$(THE_CLANG_MODULE_CACHE_DIR) include Makefile.rules
Index: lldb/test/API/tools/lldb-server/Makefile =================================================================== --- lldb/test/API/tools/lldb-server/Makefile +++ lldb/test/API/tools/lldb-server/Makefile @@ -1,6 +1,7 @@ CFLAGS_EXTRAS := -D__STDC_LIMIT_MACROS -D__STDC_FORMAT_MACROS ENABLE_THREADS := YES CXX_SOURCES := main.cpp -MAKE_DSYM :=NO +MAKE_DSYM := NO +CXXFLAGS_EXTRAS := -fmodules -fcxx-modules -fmodules-cache-path=$(THE_CLANG_MODULE_CACHE_DIR) include Makefile.rules
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