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| author | Rong Xu <xur@google.com> | 2021-08-18 16:59:02 -0700 |
|---|---|---|
| committer | Rong Xu <xur@google.com> | 2021-08-18 18:37:35 -0700 |
| commit | 5fdaaf7fd8f35ac9c9de50a45b09e29c7b0d48c4 (patch) | |
| tree | d4d0b1f29de6c82b70765774da2542c3f37c76e4 /llvm/lib/LTO/LTOBackend.cpp | |
| parent | c777e51468f5d44ad4600344683ecf9b46aa2b0f (diff) | |
| download | llvm-5fdaaf7fd8f35ac9c9de50a45b09e29c7b0d48c4.zip llvm-5fdaaf7fd8f35ac9c9de50a45b09e29c7b0d48c4.tar.gz llvm-5fdaaf7fd8f35ac9c9de50a45b09e29c7b0d48c4.tar.bz2 | |
[SampleFDO] Flow Sensitive Sample FDO (FSAFDO) profile loader
This patch implements Flow Sensitive Sample FDO (FSAFDO) profile
loader. We have two profile loaders for FS profile,
one before RegAlloc and one before BlockPlacement.
To enable it, when -fprofile-sample-use=<profile> is specified,
add "-enable-fs-discriminator=true \
-disable-ra-fsprofile-loader=false \
-disable-layout-fsprofile-loader=false"
to turn on the FS profile loaders.
Differential Revision: https://reviews.llvm.org/D107878
Diffstat (limited to 'llvm/lib/LTO/LTOBackend.cpp')
| -rw-r--r-- | llvm/lib/LTO/LTOBackend.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp index 6563af0..73a48a7 100644 --- a/llvm/lib/LTO/LTOBackend.cpp +++ b/llvm/lib/LTO/LTOBackend.cpp @@ -230,6 +230,8 @@ static void runNewPMPasses(const Config &Conf, Module &Mod, TargetMachine *TM, PGOOpt = PGOOptions("", "", "", PGOOptions::NoAction, PGOOptions::NoCSAction, true); } + if (TM) + TM->setPGOOption(PGOOpt); LoopAnalysisManager LAM; FunctionAnalysisManager FAM; |