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-rw-r--r--llvm/lib/Bitcode/Reader/BitcodeReader.cpp9
1 files changed, 7 insertions, 2 deletions
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index f280020..b33c6b7 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -968,13 +968,17 @@ static FunctionSummary::FFlags getDecodedFFlags(uint64_t RawFlags) {
return Flags;
}
-/// Decode the flags for GlobalValue in the summary.
+// Decode the flags for GlobalValue in the summary. The bits for each attribute:
+//
+// linkage: [0,4), notEligibleToImport: 4, live: 5, local: 6, canAutoHide: 7,
+// visibility: [8, 10).
static GlobalValueSummary::GVFlags getDecodedGVSummaryFlags(uint64_t RawFlags,
uint64_t Version) {
// Summary were not emitted before LLVM 3.9, we don't need to upgrade Linkage
// 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
+ auto Visibility = GlobalValue::VisibilityTypes((RawFlags >> 8) & 3); // 2 bits
RawFlags = RawFlags >> 4;
bool NotEligibleToImport = (RawFlags & 0x1) || Version < 3;
// The Live flag wasn't introduced until version 3. For dead stripping
@@ -984,7 +988,8 @@ static GlobalValueSummary::GVFlags getDecodedGVSummaryFlags(uint64_t RawFlags,
bool Local = (RawFlags & 0x4);
bool AutoHide = (RawFlags & 0x8);
- return GlobalValueSummary::GVFlags(Linkage, NotEligibleToImport, Live, Local, AutoHide);
+ return GlobalValueSummary::GVFlags(Linkage, Visibility, NotEligibleToImport,
+ Live, Local, AutoHide);
}
// Decode the flags for GlobalVariable in the summary