diff options
| author |  Googler <noreply@google.com> | 2017-06-13 20:44:27 +0200 |
|---|---|---|
| committer |  Yun Peng <pcloudy@google.com> | 2017-06-14 13:17:11 +0200 |
| commit | c61f86f56b86e442369725ad79299ccc5519b000 (patch) | |
| tree | e2bde6d9fbfb321e44a761b6318895b8123e974e /src/main/java/com/google/devtools/build/lib/rules/cpp/FdoSupport.java | |
| parent | 94bee75ab3611c3578e9ed35099b862ebe81f249 (diff) | |
Map LIPO to ThinLTO when LLVM compiler is used.
This change maps LIPO to ThinLTO when a LLVM compiler is used for building, with a
warning. This change is necessary for the following reason. The compiler team is
planning to flip the default compiler from GCC to LLVM and this change will migrate
all LIPO users of GCC to LLVM with ThinLTO + FDO (LIPO equivalent) without any
changes to build scripts.
RELNOTES[NEW]: LIPO maps to ThinLTO for LLVM builds.
PiperOrigin-RevId: 158875330
Diffstat (limited to 'src/main/java/com/google/devtools/build/lib/rules/cpp/FdoSupport.java')
| -rw-r--r-- | src/main/java/com/google/devtools/build/lib/rules/cpp/FdoSupport.java | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/FdoSupport.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/FdoSupport.java index 781061b79b..472daf4635 100644 --- a/src/main/java/com/google/devtools/build/lib/rules/cpp/FdoSupport.java +++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/FdoSupport.java @@ -577,7 +577,11 @@ public class FdoSupport { // If --fdo_optimize was not specified, we don't have any additional inputs. if (fdoProfile == null) { return ImmutableSet.of(); - } else if (fdoMode == FdoMode.AUTO_FDO || fdoMode == FdoMode.LLVM_FDO) { + } else if (fdoMode == FdoMode.LLVM_FDO) { + ImmutableSet.Builder<Artifact> auxiliaryInputs = ImmutableSet.builder(); + auxiliaryInputs.add(fdoSupportProvider.getProfileArtifact()); + return auxiliaryInputs.build(); + } else if (fdoMode == FdoMode.AUTO_FDO) { ImmutableSet.Builder<Artifact> auxiliaryInputs = ImmutableSet.builder(); auxiliaryInputs.add(fdoSupportProvider.getProfileArtifact()); if (lipoContextProvider != null) { |