[llvm] r231034 - TLI: Factor out sanitizeFunctionName. NFC.

[Michael Zolotukhin]

Author: mzolotukhin
Date: Mon Mar  2 17:24:40 2015
New Revision: 231034

URL: http://llvm.org/viewvc/llvm-project?rev=231034&view=rev
Log:
TLI: Factor out sanitizeFunctionName. NFC.

Modified:
    llvm/trunk/lib/Analysis/TargetLibraryInfo.cpp

Modified: llvm/trunk/lib/Analysis/TargetLibraryInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/TargetLibraryInfo.cpp?rev=231034&r1=231033&r2=231034&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/TargetLibraryInfo.cpp (original)
+++ llvm/trunk/lib/Analysis/TargetLibraryInfo.cpp Mon Mar  2 17:24:40 2015
@@ -714,20 +714,28 @@ TargetLibraryInfoImpl &TargetLibraryInfo
   return *this;
 }
 
-bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
-                                   LibFunc::Func &F) const {
-  const char **Start = &StandardNames[0];
-  const char **End = &StandardNames[LibFunc::NumLibFuncs];
-
+static StringRef sanitizeFunctionName(StringRef funcName) {
   // Filter out empty names and names containing null bytes, those can't be in
   // our table.
   if (funcName.empty() || funcName.find('\0') != StringRef::npos)
-    return false;
+    return StringRef();
 
   // Check for \01 prefix that is used to mangle __asm declarations and
   // strip it if present.
   if (funcName.front() == '\01')
     funcName = funcName.substr(1);
+  return funcName;
+}
+
+bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
+                                   LibFunc::Func &F) const {
+  const char **Start = &StandardNames[0];
+  const char **End = &StandardNames[LibFunc::NumLibFuncs];
+
+  funcName = sanitizeFunctionName(funcName);
+  if (funcName.empty())
+    return false;
+
   const char **I = std::lower_bound(
       Start, End, funcName, [](const char *LHS, StringRef RHS) {
         return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;