diff options
| author | Sean Fertile <sfertile@ca.ibm.com> | 2017-11-03 21:45:55 +0000 |
|---|---|---|
| committer | Sean Fertile <sfertile@ca.ibm.com> | 2017-11-03 21:45:55 +0000 |
| commit | cdc57825ed64b0995a34dcbf9f330e8b2d5cd5bd (patch) | |
| tree | 2ea024ec4e3d49cb9ce6198b7e87fb4e3ff20cda /lib/Bitcode | |
| parent | ce8f24e6d75e12371b723070fbcd546ebb01598b (diff) | |
[LTO][ThinLTO] Use the linker resolutions to mark global values as dso_local.
Now that we have a way to mark GlobalValues as local we can use the symbol
resolutions that the linker plugin provides as part of lto/thinlto link
step to refine the compilers view on what symbols will end up being local.
Differential Revision: https://reviews.llvm.org/D35702
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317374 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Bitcode')
| -rw-r--r-- | lib/Bitcode/Reader/BitcodeReader.cpp | 4 | ||||
| -rw-r--r-- | lib/Bitcode/Writer/BitcodeWriter.cpp | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp index c2272260f44..d0f11db8f61 100644 --- a/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/lib/Bitcode/Reader/BitcodeReader.cpp @@ -889,7 +889,9 @@ static GlobalValueSummary::GVFlags getDecodedGVSummaryFlags(uint64_t RawFlags, // to work correctly on earlier versions, we must conservatively treat all // values as live. bool Live = (RawFlags & 0x2) || Version < 3; - return GlobalValueSummary::GVFlags(Linkage, NotEligibleToImport, Live); + bool Local = (RawFlags & 0x4); + + return GlobalValueSummary::GVFlags(Linkage, NotEligibleToImport, Live, Local); } static GlobalValue::VisibilityTypes getDecodedVisibility(unsigned Val) { diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp index 1e491aa066e..c5d376c9426 100644 --- a/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -955,6 +955,8 @@ static uint64_t getEncodedGVSummaryFlags(GlobalValueSummary::GVFlags Flags) { RawFlags |= Flags.NotEligibleToImport; // bool RawFlags |= (Flags.Live << 1); + RawFlags |= (Flags.DSOLocal << 2); + // Linkage don't need to be remapped at that time for the summary. Any future // change to the getEncodedLinkage() function will need to be taken into // account here as well. |