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TLI: Use lambda. NFC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231011 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Zolotukhin 2015-03-02 20:50:08 +00:00
parent f5b6989928
commit f027454edc
1 changed files with 4 additions and 20 deletions
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24
lib/Analysis/TargetLibraryInfo.cpp
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@ -714,25 +714,6 @@ TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&
return *this;
}
namespace {
struct StringComparator {
/// Compare two strings and return true if LHS is lexicographically less than
/// RHS. Requires that RHS doesn't contain any zero bytes.
bool operator()(const char *LHS, StringRef RHS) const {
// Compare prefixes with strncmp. If prefixes match we know that LHS is
// greater or equal to RHS as RHS can't contain any '\0'.
return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;
}
// Provided for compatibility with MSVC's debug mode.
bool operator()(StringRef LHS, const char *RHS) const { return LHS < RHS; }
bool operator()(StringRef LHS, StringRef RHS) const { return LHS < RHS; }
bool operator()(const char *LHS, const char *RHS) const {
return std::strcmp(LHS, RHS) < 0;
}
};
}
bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
LibFunc::Func &F) const {
const char **Start = &StandardNames[0];
@ -747,7 +728,10 @@ bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
// strip it if present.
if (funcName.front() == '\01')
funcName = funcName.substr(1);
const char **I = std::lower_bound(Start, End, funcName, StringComparator());
const char **I = std::lower_bound(
Start, End, funcName, [](const char *LHS, StringRef RHS) {
return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;
});
if (I != End && *I == funcName) {
F = (LibFunc::Func)(I - Start);
return true;