commit 230a5d527e8c6e188b3f8af47f7889420db03221
author John McCall <rjmccall@apple.com> Wed Dec 23 01:37:10 2009 +0000
committer John McCall <rjmccall@apple.com> Wed Dec 23 01:37:10 2009 +0000
tree 637d4f28308e872460eae2e5ed3d91bd72d710c6
parent 417c8a43d61489a5ccca0e4e30f84c2f945b7fa9

Eliminate a completely unnecessary buffer copy when parsing float literals.

llvm-svn: 91974

clang/lib/Lex/LiteralSupport.cpp

diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index ab66942..f1993d2 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -615,17 +615,12 @@
   using llvm::APFloat;
   using llvm::StringRef;
 
-  llvm::SmallVector<char,256> floatChars;
   unsigned n = std::min(SuffixBegin - ThisTokBegin, ThisTokEnd - ThisTokBegin);
-  for (unsigned i = 0; i != n; ++i)
-    floatChars.push_back(ThisTokBegin[i]);
-
-  floatChars.push_back('\0');
 
   APFloat V (Format, APFloat::fcZero, false);
   APFloat::opStatus status;
 
-  status = V.convertFromString(StringRef(&floatChars[0], n),
+  status = V.convertFromString(StringRef(ThisTokBegin, n),
                                APFloat::rmNearestTiesToEven);
 
   if (isExact)