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| author | Reid Spencer <rspencer@reidspencer.com> | 2004-08-17 07:45:14 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2004-08-17 07:45:14 +0000 |
| commit | 38d54be85b78b66f7905775a49a92b73e21e3e8e (patch) | |
| tree | 3e6cd38b07ce6c6cd979fc3ee6d3086e62fb3371 /lib/Bytecode/Reader/Reader.h | |
| parent | cf549e1f32cbeb19bcb846320a8ff0226dd9d3cb (diff) | |
Bytecode File Format Changes:
- File format version number bumped to 4
- Writer will now align nothing
- Reader now only expects alignment for version 3 or earlier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15875 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Bytecode/Reader/Reader.h')
| -rw-r--r-- | lib/Bytecode/Reader/Reader.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/Bytecode/Reader/Reader.h b/lib/Bytecode/Reader/Reader.h index ad8b2655b7..5e7a439d7d 100644 --- a/lib/Bytecode/Reader/Reader.h +++ b/lib/Bytecode/Reader/Reader.h @@ -293,8 +293,11 @@ private: /// features, for use in future versions of LLVM. bool hasNoDependentLibraries; - /// LLVM 1.2 and earlier encoded the file version as part of the module block - /// but this information may be needed to + /// LLVM 1.3 and earlier caused blocks and other fields to start on 32-bit + /// aligned boundaries. This can lead to as much as 30% bytecode size overhead + /// in various corner cases (lots of long instructions). In LLVM 1.4, + /// alignment of bytecode fields was done away with completely. + bool hasAlignment; /// CompactionTypes - If a compaction table is active in the current function, /// this is the mapping that it contains. We keep track of what resolved type |