CodeGen: Avoid multiple strlen calls
Use a StringRef to hold our section prefix. This avoids multiple calls
to strlen.
llvm-svn: 211602
diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 02abc28..9cef50e 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -207,7 +207,7 @@
/// getSectionPrefixForGlobal - Return the section prefix name used by options
/// FunctionsSections and DataSections.
-static const char *getSectionPrefixForGlobal(SectionKind Kind) {
+static StringRef getSectionPrefixForGlobal(SectionKind Kind) {
if (Kind.isText()) return ".text.";
if (Kind.isReadOnly()) return ".rodata.";
if (Kind.isBSS()) return ".bss.";
@@ -240,16 +240,15 @@
// into a 'uniqued' section name, create and return the section now.
if ((GV->isWeakForLinker() || EmitUniquedSection) &&
!Kind.isCommon()) {
- const char *Prefix;
- Prefix = getSectionPrefixForGlobal(Kind);
+ StringRef Prefix = getSectionPrefixForGlobal(Kind);
- SmallString<128> Name(Prefix, Prefix+strlen(Prefix));
+ SmallString<128> Name(Prefix);
TM.getNameWithPrefix(Name, GV, Mang, true);
StringRef Group = "";
unsigned Flags = getELFSectionFlags(Kind);
if (GV->isWeakForLinker()) {
- Group = Name.substr(strlen(Prefix));
+ Group = Name.substr(Prefix.size());
Flags |= ELF::SHF_GROUP;
}