caio/clang-p2996
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[ThinLTO] Import readonly vars with refs

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Patch allows importing declarations of functions and variables, referenced
by the initializer of some other readonly variable.
Differential revision: https://reviews.llvm.org/D69561
This commit is contained in:
evgeny
2019-11-07 15:13:35 +03:00
parent 7ff57705ba
commit dde589389f
12 changed files with 76 additions and 31 deletions
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10
llvm/lib/Bitcode/Reader/BitcodeReader.cpp
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@@ -5761,7 +5761,7 @@ Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) {
}
const uint64_t Version = Record[0];
const bool IsOldProfileFormat = Version == 1;
if (Version < 1 || Version > 7)
if (Version < 1 || Version > 8)
return error("Invalid summary version " + Twine(Version) +
". Version should be in the range [1-7].");
Record.clear();
@@ -5814,7 +5814,7 @@ Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) {
case bitc::FS_FLAGS: { // [flags]
uint64_t Flags = Record[0];
// Scan flags.
assert(Flags <= 0x1f && "Unexpected bits in flag");
assert(Flags <= 0x3f && "Unexpected bits in flag");
// 1 bit: WithGlobalValueDeadStripping flag.
// Set on combined index only.
@@ -5837,6 +5837,10 @@ Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) {
// Set on combined index only.
if (Flags & 0x10)
TheIndex.setPartiallySplitLTOUnits();
// 1 bit: WithAttributePropagation flag.
// Set on combined index only.
if (Flags & 0x20)
TheIndex.setWithAttributePropagation();
break;
}
case bitc::FS_VALUE_GUID: { // [valueid, refguid]
@@ -6542,7 +6546,7 @@ static Expected<bool> getEnableSplitLTOUnitFlag(BitstreamCursor &Stream,
case bitc::FS_FLAGS: { // [flags]
uint64_t Flags = Record[0];
// Scan flags.
assert(Flags <= 0x1f && "Unexpected bits in flag");
assert(Flags <= 0x3f && "Unexpected bits in flag");
return Flags & 0x8;
}