diff options
| author | Wei Mi <wmi@google.com> | 2020-01-09 20:58:31 -0800 |
|---|---|---|
| committer | Wei Mi <wmi@google.com> | 2020-01-09 21:13:11 -0800 |
| commit | 21a4710c67a97838dd75cf60ed24da11280800f8 (patch) | |
| tree | 82d65d32b7d5d053ce7ec935f97e9b5afa224951 /clang/lib/CodeGen | |
| parent | 01662aeb5d1fcef4f067caec633d0c85bb3062a7 (diff) | |
| download | bcm5719-llvm-21a4710c67a97838dd75cf60ed24da11280800f8.tar.gz bcm5719-llvm-21a4710c67a97838dd75cf60ed24da11280800f8.zip | |
[ThinLTO] Pass CodeGenOpts like UnrollLoops/VectorizeLoop/VectorizeSLP
down to pass builder in ltobackend.
Currently CodeGenOpts like UnrollLoops/VectorizeLoop/VectorizeSLP in clang
are not passed down to pass builder in ltobackend when new pass manager is
used. This is inconsistent with the behavior when new pass manager is used
and thinlto is not used. Such inconsistency causes slp vectorization pass
not being enabled in ltobackend for O3 + thinlto right now. This patch
fixes that.
Differential Revision: https://reviews.llvm.org/D72386
Diffstat (limited to 'clang/lib/CodeGen')
| -rw-r--r-- | clang/lib/CodeGen/BackendUtil.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp index ed881f2ddf6..d58bcf5a790 100644 --- a/clang/lib/CodeGen/BackendUtil.cpp +++ b/clang/lib/CodeGen/BackendUtil.cpp @@ -1437,6 +1437,12 @@ static void runThinLTOBackend(ModuleSummaryIndex *CombinedIndex, Module *M, Conf.OptLevel = CGOpts.OptimizationLevel; initTargetOptions(Conf.Options, CGOpts, TOpts, LOpts, HeaderOpts); Conf.SampleProfile = std::move(SampleProfile); + Conf.PTO.LoopUnrolling = CGOpts.UnrollLoops; + // For historical reasons, loop interleaving is set to mirror setting for loop + // unrolling. + Conf.PTO.LoopInterleaving = CGOpts.UnrollLoops; + Conf.PTO.LoopVectorization = CGOpts.VectorizeLoop; + Conf.PTO.SLPVectorization = CGOpts.VectorizeSLP; // Context sensitive profile. if (CGOpts.hasProfileCSIRInstr()) { |
