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Add a new BitstreamEntry concept, and add two helper methods for walking

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through a BitstreamCursor that produce it: advance() and 
advanceSkippingSubblocks(), representing the two most common ways clients
want to walk through bitcode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172919 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2013-01-19 21:35:24 +00:00
parent 35f63ddc8f
commit 63246aa04f
3 changed files with 94 additions and 9 deletions
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2
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -1737,7 +1737,7 @@ bool BitcodeReader::ParseBitcodeInto(Module *M) {
// The ranlib in xcode 4 will align archive members by appending newlines
// to the end of them. If this file size is a multiple of 4 but not 8, we
// have to read and ignore these final 4 bytes :-(
if (Stream.GetAbbrevIDWidth() == 2 && Code == 2 &&
if (Stream.getAbbrevIDWidth() == 2 && Code == 2 &&
Stream.Read(6) == 2 && Stream.Read(24) == 0xa0a0a &&
Stream.AtEndOfStream())
return false;