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Implement Darwin/ARM behavior for defaulting to -fno-builtin-str{cat,cpy}. 

llvm-svn: 81425
This commit is contained in:
Daniel Dunbar 2009-09-10 03:37:02 +00:00
parent 243ac566e2
commit 2ffe029a61
3 changed files with 56 additions and 1 deletions
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4
clang/include/clang/Driver/Options.def
View File

@ -370,6 +370,8 @@ OPTION("-fast", fast, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fasynchronous-unwind-tables", fasynchronous_unwind_tables, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fblocks", fblocks, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fbootclasspath=", fbootclasspath_EQ, Joined, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fbuiltin-strcat", fbuiltin_strcat, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fbuiltin-strcpy", fbuiltin_strcpy, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fbuiltin", fbuiltin, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fclasspath=", fclasspath_EQ, Joined, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fcolor-diagnostics", fcolor_diagnostics, Flag, f_Group, INVALID, "", 0, 0, 0)
@ -410,6 +412,8 @@ OPTION("-fnested-functions", fnested_functions, Flag, f_Group, INVALID, "", 0, 0
OPTION("-fnext-runtime", fnext_runtime, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fno-asynchronous-unwind-tables", fno_asynchronous_unwind_tables, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fno-blocks", fno_blocks, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fno-builtin-strcat", fno_builtin_strcat, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fno-builtin-strcpy", fno_builtin_strcpy, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fno-builtin", fno_builtin, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fno-caret-diagnostics", fno_caret_diagnostics, Flag, f_Group, INVALID, "", 0, 0, 0)
OPTION("-fno-color-diagnostics", fno_color_diagnostics, Flag, f_Group, INVALID, "", 0, 0, 0)

39
clang/lib/Driver/Tools.cpp
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@ -662,6 +662,16 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
D.Diag(clang::diag::err_drv_clang_unsupported) << A->getAsString(Args);
}
// Default to -fno-builtin-str{cat,cpy} on Darwin for ARM.
if (getToolChain().getTriple().getOS() == llvm::Triple::Darwin &&
(getToolChain().getTriple().getArch() == llvm::Triple::arm ||
getToolChain().getTriple().getArch() == llvm::Triple::thumb)) {
if (!Args.hasArg(options::OPT_fbuiltin_strcat))
CmdArgs.push_back("-fno-builtin-strcat");
if (!Args.hasArg(options::OPT_fbuiltin_strcpy))
CmdArgs.push_back("-fno-builtin-strcpy");
}
if (Arg *A = Args.getLastArg(options::OPT_traditional,
options::OPT_traditional_cpp))
D.Diag(clang::diag::err_drv_clang_unsupported) << A->getAsString(Args);
@ -919,6 +929,14 @@ void darwin::CC1::AddCC1Args(const ArgList &Args,
!Args.hasArg(options::OPT_mdynamic_no_pic))
CmdArgs.push_back("-fPIC");
if (getToolChain().getTriple().getArch() == llvm::Triple::arm ||
getToolChain().getTriple().getArch() == llvm::Triple::thumb) {
if (!Args.hasArg(options::OPT_fbuiltin_strcat))
CmdArgs.push_back("-fno-builtin-strcat");
if (!Args.hasArg(options::OPT_fbuiltin_strcpy))
CmdArgs.push_back("-fno-builtin-strcpy");
}
// gcc has some code here to deal with when no -mmacosx-version-min
// and no -miphoneos-version-min is present, but this never happens
// due to tool chain specific argument translation.
@ -991,6 +1009,27 @@ void darwin::CC1::AddCC1OptionsArgs(const ArgList &Args, ArgStringList &CmdArgs,
Args.AddLastArg(CmdArgs, options::OPT_p);
// The driver treats -fsyntax-only specially.
if (getToolChain().getTriple().getArch() == llvm::Triple::arm ||
getToolChain().getTriple().getArch() == llvm::Triple::thumb) {
// Removes -fbuiltin-str{cat,cpy}; these aren't recognized by cc1 but are
// used to inhibit the default -fno-builtin-str{cat,cpy}.
//
// FIXME: Should we grow a better way to deal with "removing" args?
//
// FIXME: Use iterator.
for (ArgList::const_iterator it = Args.begin(),
ie = Args.end(); it != ie; ++it) {
const Arg *A = *it;
if (A->getOption().matches(options::OPT_f_Group) ||
A->getOption().matches(options::OPT_fsyntax_only)) {
if (!A->getOption().matches(options::OPT_fbuiltin_strcat) &&
!A->getOption().matches(options::OPT_fbuiltin_strcpy)) {
A->claim();
A->render(Args, CmdArgs);
}
}
}
} else
Args.AddAllArgs(CmdArgs, options::OPT_f_Group, options::OPT_fsyntax_only);
Args.AddAllArgs(CmdArgs, options::OPT_undef);

12
clang/test/Driver/arm-darwin-builtin.c Normal file
View File

@ -0,0 +1,12 @@
// RUN: clang -ccc-host-triple x86_64-apple-darwin9 -arch arm -### -fsyntax-only %s 2> %t &&
// RUN: grep -- "-fno-builtin-strcat" %t &&
// RUN: grep -- "-fno-builtin-strcpy" %t &&
// RUN: clang -ccc-host-triple x86_64-apple-darwin9 -arch arm -### -fsyntax-only %s -fbuiltin-strcat -fbuiltin-strcpy 2> %t &&
// RUN: not grep -- "-fno-builtin-strcat" %t &&
// RUN: not grep -- "-fno-builtin-strcpy" %t &&
// RUN: clang -ccc-no-clang -ccc-host-triple x86_64-apple-darwin9 -arch arm -### -fsyntax-only %s -fbuiltin-strcat -fbuiltin-strcpy 2> %t &&
// RUN: not grep -- "-fno-builtin-strcat" %t &&
// RUN: not grep -- "-fno-builtin-strcpy" %t