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| author | Daniel Dunbar <daniel@zuster.org> | 2009-03-17 21:15:18 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2009-03-17 21:15:18 +0000 |
| commit | b372c1114c1eeffbd1a3f6ddc5d33e77564bfee2 (patch) | |
| tree | 023532e358a24263eeb1eb2677711fb2c6e9f5c5 /lib | |
| parent | 3985728bdefeec6acdcdf4dc78cbe1b9fb7cb72b (diff) | |
| download | external_llvm-b372c1114c1eeffbd1a3f6ddc5d33e77564bfee2.zip external_llvm-b372c1114c1eeffbd1a3f6ddc5d33e77564bfee2.tar.gz external_llvm-b372c1114c1eeffbd1a3f6ddc5d33e77564bfee2.tar.bz2 | |
Add BUILTIN_EXPECT Support/Compiler macro.
- Use for exceptional buffer conditions in raw_ostream:write to shave
off a cycle or two.
- Please rename if you have a better one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67103 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Support/raw_ostream.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp index 639d6fa..f62a31d 100644 --- a/lib/Support/raw_ostream.cpp +++ b/lib/Support/raw_ostream.cpp @@ -16,6 +16,7 @@ #include "llvm/System/Program.h" #include "llvm/ADT/SmallVector.h" #include "llvm/Config/config.h" +#include "llvm/Support/Compiler.h" #include <ostream> #if defined(HAVE_UNISTD_H) @@ -142,7 +143,7 @@ raw_ostream &raw_ostream::write(unsigned char C) { raw_ostream &raw_ostream::write(const char *Ptr, unsigned Size) { // Group exceptional cases into a single branch. - if (OutBufCur+Size > OutBufEnd) { + if (BUILTIN_EXPECT(OutBufCur+Size > OutBufEnd, false)) { if (Unbuffered) { write_impl(Ptr, Size); return *this; |