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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2012-11-23 16:26:30 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2012-11-23 16:26:30 +0000 |
| commit | 99e3bfbd17eee1a29b8bfee70b76ff2779632735 (patch) | |
| tree | 7044bc619ead71511122467dbedc42f94d5a4a1d /clang/lib/Sema/SemaDecl.cpp | |
| parent | 195eda99225b58091971dd034e7c7650de68f4a7 (diff) | |
| download | bcm5719-llvm-99e3bfbd17eee1a29b8bfee70b76ff2779632735.tar.gz bcm5719-llvm-99e3bfbd17eee1a29b8bfee70b76ff2779632735.zip | |
Merge used flags so that we don't have to iterate on isUsed. With this change
"clang -cc1 -fsyntax-only" on the preprocessed output of
#define M extern int a;
#define M2 M M
#define M4 M2 M2
#define M8 M4 M4
#define M16 M8 M8
#define M32 M16 M16
#define M64 M32 M32
#define M128 M64 M64
#define M256 M128 M128
#define M512 M256 M256
#define M1024 M512 M512
#define M2048 M1024 M1024
#define M4096 M2048 M2048
#define M8192 M4096 M4096
#define M16384 M8192 M8192
M16384
goes from 2.994s to 1.416s. GCC is at 0.022s, so we still have a long way to go.
llvm-svn: 168519
Diffstat (limited to 'clang/lib/Sema/SemaDecl.cpp')
| -rw-r--r-- | clang/lib/Sema/SemaDecl.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp index 629fccc3064..e48211032f7 100644 --- a/clang/lib/Sema/SemaDecl.cpp +++ b/clang/lib/Sema/SemaDecl.cpp @@ -2388,6 +2388,10 @@ bool Sema::MergeCompatibleFunctionDecls(FunctionDecl *New, FunctionDecl *Old, if (Old->isPure()) New->setPure(); + // Merge "used" flag. + if (Old->isUsed(false)) + New->setUsed(); + // Merge attributes from the parameters. These can mismatch with K&R // declarations. if (New->getNumParams() == Old->getNumParams()) |
