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Driver/Darwin: Pass -demangle when linking, if the linker supports it. 

llvm-svn: 110873
This commit is contained in:
Daniel Dunbar 2010-08-11 23:07:50 +00:00
parent 976a2f54fa
commit cacb0e2d45
2 changed files with 39 additions and 0 deletions
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16
clang/lib/Driver/Tools.cpp
View File

@ -2262,6 +2262,22 @@ void darwin::Link::AddLinkArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
const Driver &D = getToolChain().getDriver();
unsigned Version[3] = { 0, 0, 0 };
if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
bool HadExtra;
if (!Driver::GetReleaseVersion(A->getValue(Args), Version[0],
Version[1], Version[2], HadExtra) ||
HadExtra)
D.Diag(clang::diag::err_drv_invalid_version_number)
<< A->getAsString(Args);
}
// Newer linkers support -demangle, pass it if supported and not disabled by
// the user.
if (Version[0] >= 100 && !Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) {
CmdArgs.push_back("-demangle");
}
// Derived from the "link" spec.
Args.AddAllArgs(CmdArgs, options::OPT_static);
if (!Args.hasArg(options::OPT_static))

23
clang/test/Driver/darwin-ld.c
View File

@ -82,3 +82,26 @@
//
// LINK_EXPLICIT_NO_PIE: ld"
// LINK_EXPLICIT_NO_PIE: "-no_pie"
// RUN: %clang -ccc-host-triple x86_64-apple-darwin10 -### %t.o \
// RUN: -mlinker-version=100 2> %t.log
// RUN: FileCheck -check-prefix=LINK_NEWER_DEMANGLE %s < %t.log
//
// LINK_NEWER_DEMANGLE: ld"
// LINK_NEWER_DEMANGLE: "-demangle"
// RUN: %clang -ccc-host-triple x86_64-apple-darwin10 -### %t.o \
// RUN: -mlinker-version=100 -Wl,--no-demangle 2> %t.log
// RUN: FileCheck -check-prefix=LINK_NEWER_NODEMANGLE %s < %t.log
//
// LINK_NEWER_NODEMANGLE: ld"
// LINK_NEWER_NODEMANGLE-NOT: "-demangle"
// LINK_NEWER_NODEMANGLE: "-lgcc"
// RUN: %clang -ccc-host-triple x86_64-apple-darwin10 -### %t.o \
// RUN: -mlinker-version=95 2> %t.log
// RUN: FileCheck -check-prefix=LINK_OLDER_NODEMANGLE %s < %t.log
//
// LINK_OLDER_NODEMANGLE: ld"
// LINK_OLDER_NODEMANGLE-NOT: "-demangle"
// LINK_OLDER_NODEMANGLE: "-lgcc"