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tools: avoid a string duplication

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The auxiliary file records are contiguous and only contain the filename.
Construct a StringRef directly rather than copying to a temporary buffer.

Suggested by majnemer on IRC!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206139 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool 2014-04-13 22:54:11 +00:00
parent 42ad510d31
commit 1a16898813
1 changed files with 4 additions and 8 deletions
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12
tools/llvm-objdump/llvm-objdump.cpp
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@ -695,14 +695,10 @@ static void PrintCOFFSymbolTable(const COFFObjectFile *coff) {
, unsigned(asd->Selection));
break;
case COFF::IMAGE_SYM_CLASS_FILE:
SmallString<261> FileName;
for (unsigned AI = i, AE = i + aux_count + 1; AI < AE; ++AI) {
const coff_aux_file *AF;
if (error(coff->getAuxSymbol<coff_aux_file>(AI, AF)))
return;
FileName.append(&AF->FileName[0], &AF->FileName[18]);
}
outs() << "AUX " << FileName << '\n';
const coff_aux_file *AF;
if (error(coff->getAuxSymbol<coff_aux_file>(i, AF)))
return;
outs() << "AUX " << StringRef(AF->FileName) << '\n';
i = i + aux_count;
aux_count = 0;
break;