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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2015-04-02 15:29:07 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2015-04-02 15:29:07 +0000 |
| commit | 475386d688796883cf52cd9a84a81a5ecda19247 (patch) | |
| tree | 3d7a2f30facba3f1b93f75a59a60304a6c348ccb /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | 45324cec5f3f00e75d4c641a19c0b547ed639728 (diff) | |
| download | llvm-475386d688796883cf52cd9a84a81a5ecda19247.zip llvm-475386d688796883cf52cd9a84a81a5ecda19247.tar.gz llvm-475386d688796883cf52cd9a84a81a5ecda19247.tar.bz2 | |
[ast] Put the Stmt hierarchy on a diet for 64 bit targets.
Previously we would waste 32 bits on alignment, use LLVM_ALIGNAS to
free that space for derived classes an place. Sadly still have to #ifdef
out MSVC 2013 because it can't align based on a sizeof expr.
No intended functionality change. New byte counts:
sizeof(before) | sizeof(after)
LabelStmt: 32 | LabelStmt: 24
SwitchStmt: 48 | SwitchStmt: 40
WhileStmt: 40 | WhileStmt: 32
DoStmt: 40 | DoStmt: 32
ForStmt: 64 | ForStmt: 56
ContinueStmt: 16 | ContinueStmt: 8
BreakStmt: 16 | BreakStmt: 8
ReturnStmt: 32 | ReturnStmt: 24
AsmStmt: 40 | AsmStmt: 32
GCCAsmStmt: 80 | GCCAsmStmt: 72
MSAsmStmt: 96 | MSAsmStmt: 88
SEHExceptStmt: 32 | SEHExceptStmt: 24
SEHFinallyStmt: 24 | SEHFinallyStmt: 16
SEHLeaveStmt: 16 | SEHLeaveStmt: 8
CapturedStmt: 32 | CapturedStmt: 24
CXXCatchStmt: 32 | CXXCatchStmt: 24
CXXForRangeStmt: 72 | CXXForRangeStmt: 64
ObjCAtFinallyStmt: 24 | ObjCAtFinallyStmt: 16
ObjCAtSynchronizedStmt: 32 | ObjCAtSynchronizedStmt: 24
ObjCAtThrowStmt: 24 | ObjCAtThrowStmt: 16
ObjCAutoreleasePoolStmt: 24 | ObjCAutoreleasePoolStmt: 16
llvm-svn: 233921
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
0 files changed, 0 insertions, 0 deletions