diff options
| author | Benjamin Kramer <benny.kra@googlemail.com> | 2010-01-13 12:45:23 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2010-01-13 12:45:23 +0000 |
| commit | e05acd1cd1e954ff1019c2fc136d41b3cfcf64dd (patch) | |
| tree | 22907ea5714f0dd34cac34ec6ae92dcd6642c5f2 /lib/Support | |
| parent | 074e5ee642f72bfa5fa53aaebbfa286f76d93156 (diff) | |
| download | external_llvm-e05acd1cd1e954ff1019c2fc136d41b3cfcf64dd.zip external_llvm-e05acd1cd1e954ff1019c2fc136d41b3cfcf64dd.tar.gz external_llvm-e05acd1cd1e954ff1019c2fc136d41b3cfcf64dd.tar.bz2 | |
Introduce Twine::toStringRef, a variant of toVector which avoids the copy if the
twine can be represented as a single StringRef. Use the new methode to simplify
some twine users.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93317 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support')
| -rw-r--r-- | lib/Support/Twine.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/Support/Twine.cpp b/lib/Support/Twine.cpp index 94464ff..21504e9 100644 --- a/lib/Support/Twine.cpp +++ b/lib/Support/Twine.cpp @@ -15,8 +15,7 @@ using namespace llvm; std::string Twine::str() const { SmallString<256> Vec; - toVector(Vec); - return std::string(Vec.begin(), Vec.end()); + return toStringRef(Vec).str(); } void Twine::toVector(SmallVectorImpl<char> &Out) const { @@ -24,6 +23,13 @@ void Twine::toVector(SmallVectorImpl<char> &Out) const { print(OS); } +StringRef Twine::toStringRef(SmallVectorImpl<char> &Out) const { + if (isSingleStringRef()) + return getSingleStringRef(); + toVector(Out); + return StringRef(Out.data(), Out.size()); +} + void Twine::printOneChild(raw_ostream &OS, const void *Ptr, NodeKind Kind) const { switch (Kind) { |