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Add RBE_CXX_COMPARE variable to locally disable compare mode for C++ 

When we do 64-32 migration, we want compare mode to be present only for
non-c++ actions as it would impact performance on 32-core machines
otherwise.

Bug: b/157414300
Test: Ran a build with "RBE_CXX_LINKS="true" RBE_CXX_LINKS_EXEC_STRATEGY="remote" RBE_CXX_COMPARE="false" RBE_compare="true" use_rbe mmma bionic"
and observed that local-executions happened only for link actions and
not for C++ actions.

Change-Id: Ia972c74d804085196a7b6ec755af63042c6b3909
This commit is contained in:
Kousik Kumar 2020-05-26 11:54:36 -07:00
parent 6d412db1b3
commit b0f055db13
1 changed files with 7 additions and 1 deletions
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8
core/rbe.mk
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@ -28,6 +28,12 @@ ifneq ($(filter-out false,$(USE_RBE)),)
cxx_rbe_exec_strategy := "local"
endif
ifdef RBE_CXX_COMPARE
cxx_compare := $(RBE_CXX_COMPARE)
else
cxx_compare := "false"
endif
ifdef RBE_JAVAC_EXEC_STRATEGY
javac_exec_strategy := $(RBE_JAVAC_EXEC_STRATEGY)
else
@ -51,7 +57,7 @@ ifneq ($(filter-out false,$(USE_RBE)),)
java_r8_d8_platform := $(platform)",Pool=java16"
RBE_WRAPPER := $(rbe_dir)/rewrapper
RBE_CXX := --labels=type=compile,lang=cpp,compiler=clang --env_var_whitelist=PWD --exec_strategy=$(cxx_rbe_exec_strategy) --platform="$(cxx_platform)"
RBE_CXX := --labels=type=compile,lang=cpp,compiler=clang --env_var_whitelist=PWD --exec_strategy=$(cxx_rbe_exec_strategy) --platform="$(cxx_platform)" --compare="$(cxx_compare)"
# Append rewrapper to existing *_WRAPPER variables so it's possible to
# use both ccache and rewrapper.