From 8fe6936e180d12afbbfeb83590baf526395cc272 Mon Sep 17 00:00:00 2001 From: Mehdi Amini Date: Sun, 24 Apr 2016 03:18:11 +0000 Subject: Add a version field in the bitcode for the summary Differential Revision: http://reviews.llvm.org/D19456 From: Mehdi Amini llvm-svn: 267318 --- llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp') diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp index cbacf8127d4..8b583fe4995 100644 --- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp @@ -5995,8 +5995,21 @@ std::error_code ModuleSummaryIndexBitcodeReader::parseModule() { std::error_code ModuleSummaryIndexBitcodeReader::parseEntireSummary() { if (Stream.EnterSubBlock(bitc::GLOBALVAL_SUMMARY_BLOCK_ID)) return error("Invalid record"); - SmallVector Record; + + // Parse version + { + BitstreamEntry Entry = Stream.advanceSkippingSubblocks(); + if (Entry.Kind != BitstreamEntry::Record) + return error("Invalid Summary Block: record for version expected"); + if (Stream.readRecord(Entry.ID, Record) != bitc::FS_VERSION) + return error("Invalid Summary Block: version expected"); + } + const uint64_t Version = Record[0]; + if (Version != 1) + return error("Invalid summary version " + Twine(Version) + ", 1 expected"); + Record.clear(); + // Keep around the last seen summary to be used when we see an optional // "OriginalName" attachement. GlobalValueSummary *LastSeenSummary = nullptr; -- cgit v1.2.3