From b0a8ff71e543ad01bdb684866176a63e72a472f8 Mon Sep 17 00:00:00 2001 From: Mehdi Amini Date: Fri, 3 Feb 2017 00:32:38 +0000 Subject: [ThinLTO] Add an auto-hide feature When a symbol is not exported outside of the DSO, it is can be hidden. Usually we try to internalize as much as possible, but it is not always possible, for instance a symbol can be referenced outside of the LTO unit, or there can be cross-module reference in ThinLTO. This is a recommit of r293912 after fixing build failures, and a recommit of r293918 after fixing LLD tests. Differential Revision: https://reviews.llvm.org/D28978 llvm-svn: 293970 --- llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'llvm/lib/Bitcode/Writer/BitcodeWriter.cpp') diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp index 4eac89c37a5b..bdb57f59dde6 100644 --- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -971,13 +971,13 @@ static unsigned getEncodedLinkage(const GlobalValue &GV) { static uint64_t getEncodedGVSummaryFlags(GlobalValueSummary::GVFlags Flags) { uint64_t RawFlags = 0; - RawFlags |= Flags.NotEligibleToImport; // bool - RawFlags |= (Flags.LiveRoot << 1); // 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. - RawFlags = (RawFlags << 4) | Flags.Linkage; // 4 bits - + RawFlags |= Flags.Linkage; // 4 bits linkage + RawFlags |= (Flags.NotEligibleToImport << 4); // bool + RawFlags |= (Flags.LiveRoot << 5); // bool + RawFlags |= (Flags.AutoHide << 6); // bool return RawFlags; } -- cgit v1.2.3