6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-04-05 01:31:05 +00:00
Code Issues Projects Releases Wiki Activity

Emit memcmp directly from the StringMatcherEmitter.

Browse Source 
There should be no difference in the resulting binary, given a sufficiently
smart compiler. However we already had compiler timeouts on the generated
code in Intrinsics.gen, this hopefully makes the lives of slow buildbots a
little easier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157161 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-05-20 18:10:42 +00:00
parent 6514551be7
commit 5875c33746
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/TableGen/StringMatcher.cpp
View File

@ -87,11 +87,11 @@ EmitStringMatcherForChar(const std::vector<const StringPair*> &Matches,
<< Matches[0]->first[CharNo] << "')\n";
OS << Indent << " break;\n";
} else {
// Do the comparison with if (Str.substr(1, 3) != "foo").
// Do the comparison with if memcmp(Str.data()+1, "foo", 3).
// FIXME: Need to escape general strings.
OS << Indent << "if (" << StrVariableName << ".substr(" << CharNo << ", "
<< NumChars << ") != \"";
OS << Matches[0]->first.substr(CharNo, NumChars) << "\")\n";
OS << Indent << "if (memcmp(" << StrVariableName << ".data()+" << CharNo
<< ", \"" << Matches[0]->first.substr(CharNo, NumChars) << "\", "
<< NumChars << "))\n";
OS << Indent << " break;\n";
}