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Document my otherwise-inexplicable change 

llvm-svn: 107998
This commit is contained in:
Douglas Gregor 2010-07-09 18:39:07 +00:00
parent 792e906bef
commit 79edde88ed
1 changed files with 15 additions and 0 deletions
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15
clang/tools/libclang/CIndex.cpp
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@ -1184,7 +1184,15 @@ clang_createTranslationUnitFromSourceFile(CXIndex CIdx,
// in the actual argument list.
if (source_filename)
Args.push_back(source_filename);
// Since the Clang C library is primarily used by batch tools dealing with
// (often very broken) source code, where spell-checking can have a
// significant negative impact on performance (particularly when
// precompiled headers are involved), we disable it by default.
// Note that we place this argument early in the list, so that it can be
// overridden by the caller with "-fspell-checking".
Args.push_back("-fno-spell-checking");
Args.insert(Args.end(), command_line_args,
command_line_args + num_command_line_args);
Args.push_back("-Xclang");
@ -1248,6 +1256,13 @@ clang_createTranslationUnitFromSourceFile(CXIndex CIdx,
argv.push_back("-o");
char astTmpFile[L_tmpnam];
argv.push_back(tmpnam(astTmpFile));
// Since the Clang C library is primarily used by batch tools dealing with
// (often very broken) source code, where spell-checking can have a
// significant negative impact on performance (particularly when
// precompiled headers are involved), we disable it by default.
// Note that we place this argument early in the list, so that it can be
// overridden by the caller with "-fspell-checking".
argv.push_back("-fno-spell-checking");
// Remap any unsaved files to temporary files.