Add "hasSection" flag in the Summary
Reviewers: tejohnson
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D19405
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 267329
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 0e29c0e..b8db3e8 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -745,7 +745,9 @@
// like getDecodedLinkage() above. Any future change to the linkage enum and
// to getDecodedLinkage() will need to be taken into account here as above.
auto Linkage = GlobalValue::LinkageTypes(RawFlags & 0xF); // 4 bits
- return GlobalValueSummary::GVFlags(Linkage);
+ RawFlags = RawFlags >> 4;
+ auto HasSection = RawFlags & 0x1; // bool
+ return GlobalValueSummary::GVFlags(Linkage, HasSection);
}
static GlobalValue::VisibilityTypes getDecodedVisibility(unsigned Val) {
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index d642dd4..fcce553 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -789,8 +789,14 @@
// Decode the flags for GlobalValue in the summary
static uint64_t getEncodedGVSummaryFlags(GlobalValueSummary::GVFlags Flags) {
uint64_t RawFlags = 0;
- // Emit Linkage enum.
- RawFlags |= Flags.Linkage; // 4 bits
+
+ RawFlags |= Flags.HasSection; // bool
+
+ // 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
+
return RawFlags;
}