diff options
| author |  klimek <klimek@google.com> | 2017-08-01 14:56:53 +0200 |
|---|---|---|
| committer |  Dmitry Lomov <dslomov@google.com> | 2017-08-01 17:45:10 +0200 |
| commit | b05ed43283b9f5d69c4a1b27aa8319daed27e0be (patch) | |
| tree | 9a0f098de3c1886dbca21a416ba6c4d86b6108cf /src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java | |
| parent | 8db4454dbe103343d522a05bdd9f083b4cc13ff8 (diff) | |
Implement user experience for LIPO / ThinLTO users.
Add flag --convert_lipo_to_thinlto, which allows builds with LLVM to use
ThinLTO when the user specifies LIPO + FDO flags; if that flag is not set, and
the user requests a build with LLVM, the compile will now fail.
Add an attribute supports_lipo to the DefaultCpuToolchain crosstool proto and
skip default toolchains that do not support LIPO when the user has specified
LIPO flags in the toolchain selection; this enables CROSSTOOL files to cause
an implicit fallback to a hybrid / LIPO toolchain when using an LLVM toolchain
as the default.
Add a CrosstoolBuilder to MockCcSupport and add a new method
setupCrosstoolFromScratch that allows unit tests to fully control the setup.
The other methods available in MockCcSupport will always load in a default
CROSSTOOL file and may show different unit test results depending on the
content of that file.
RELNOTES: None.
PiperOrigin-RevId: 163819246
Diffstat (limited to 'src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java')
| -rw-r--r-- | src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java index 5a1c87cb9a..4a6a8579be 100644 --- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java +++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java @@ -485,6 +485,17 @@ public class CppOptions extends FragmentOptions { } @Option( + name = "convert_lipo_to_thinlto", + defaultValue = "false", + documentationCategory = OptionDocumentationCategory.UNCATEGORIZED, + effectTags = {OptionEffectTag.UNKNOWN}, + help = + "If set, builds using LIPO will automatically be converted to ThinLTO for the LLVM " + + "compiler." + ) + public boolean convertLipoToThinLTO; + + @Option( name = "lipo", defaultValue = "off", converter = LipoModeConverter.class, |