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Save several std::string constructions using llvm::Twine.

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llvm-svn: 255535
This commit is contained in:
Yaron Keren 2015-12-14 19:28:40 +00:00
parent 3ad596a73f
commit 7962cd5cdd
1 changed files with 6 additions and 9 deletions
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15
lib/Target/X86/AsmParser/X86AsmInstrumentation.cpp
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@ -118,11 +118,6 @@ bool IsStackReg(unsigned Reg) { return Reg == X86::RSP || Reg == X86::ESP; }
bool IsSmallMemAccess(unsigned AccessSize) { return AccessSize < 8; }
std::string FuncName(unsigned AccessSize, bool IsWrite) {
return std::string("__asan_report_") + (IsWrite ? "store" : "load") +
utostr(AccessSize);
}
class X86AddressSanitizer : public X86AsmInstrumentation {
public:
struct RegisterContext {
@ -612,8 +607,9 @@ private:
EmitInstruction(
Out, MCInstBuilder(X86::PUSH32r).addReg(RegCtx.AddressReg(MVT::i32)));
const std::string &Fn = FuncName(AccessSize, IsWrite);
MCSymbol *FnSym = Ctx.getOrCreateSymbol(StringRef(Fn));
MCSymbol *FnSym = Ctx.getOrCreateSymbol(llvm::Twine("__asan_report_") +
(IsWrite ? "store" : "load") +
llvm::Twine(AccessSize));
const MCSymbolRefExpr *FnExpr =
MCSymbolRefExpr::create(FnSym, MCSymbolRefExpr::VK_PLT, Ctx);
EmitInstruction(Out, MCInstBuilder(X86::CALLpcrel32).addExpr(FnExpr));
@ -882,8 +878,9 @@ private:
EmitInstruction(Out, MCInstBuilder(X86::MOV64rr).addReg(X86::RDI).addReg(
RegCtx.AddressReg(MVT::i64)));
}
const std::string &Fn = FuncName(AccessSize, IsWrite);
MCSymbol *FnSym = Ctx.getOrCreateSymbol(StringRef(Fn));
MCSymbol *FnSym = Ctx.getOrCreateSymbol(llvm::Twine("__asan_report_") +
(IsWrite ? "store" : "load") +
llvm::Twine(AccessSize));
const MCSymbolRefExpr *FnExpr =
MCSymbolRefExpr::create(FnSym, MCSymbolRefExpr::VK_PLT, Ctx);
EmitInstruction(Out, MCInstBuilder(X86::CALL64pcrel32).addExpr(FnExpr));