OK. -eric
On Fri, Jan 22, 2016 at 5:56 PM Justin Lebar <jle...@google.com> wrote: > jlebar created this revision. > jlebar added a reviewer: tra. > jlebar added subscribers: echristo, jhen, cfe-commits. > > CUDA (well, strictly speaking, NVPTX) doesn't support aliases. > > http://reviews.llvm.org/D16502 > > Files: > include/clang/Basic/DiagnosticSemaKinds.td > lib/Sema/SemaDeclAttr.cpp > test/SemaCUDA/alias.cu > > Index: test/SemaCUDA/alias.cu > =================================================================== > --- /dev/null > +++ test/SemaCUDA/alias.cu > @@ -0,0 +1,14 @@ > +// REQUIRES: x86-registered-target > +// REQUIRES: nvptx-registered-target > +// RUN: %clang_cc1 -triple nvptx-unknown-cuda -fsyntax-only > -fcuda-is-device -verify -DEXPECT_ERR %s > +// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fsyntax-only -verify > %s > + > + > +// The alias attribute is not allowed in CUDA device code. > +void bar(); > +__attribute__((alias("bar"))) void foo(); > +#ifdef EXPECT_ERR > +// expected-error@-2 {{CUDA does not support aliases}} > +#else > +// expected-no-diagnostics > +#endif > Index: lib/Sema/SemaDeclAttr.cpp > =================================================================== > --- lib/Sema/SemaDeclAttr.cpp > +++ lib/Sema/SemaDeclAttr.cpp > @@ -1557,6 +1557,9 @@ > S.Diag(Attr.getLoc(), diag::err_alias_not_supported_on_darwin); > return; > } > + if (S.Context.getTargetInfo().getTriple().isNVPTX()) { > + S.Diag(Attr.getLoc(), diag::err_alias_not_supported_on_nvptx); > + } > > // Aliases should be on declarations, not definitions. > if (const auto *FD = dyn_cast<FunctionDecl>(D)) { > Index: include/clang/Basic/DiagnosticSemaKinds.td > =================================================================== > --- include/clang/Basic/DiagnosticSemaKinds.td > +++ include/clang/Basic/DiagnosticSemaKinds.td > @@ -6427,6 +6427,7 @@ > "CUDA device code does not support variadic functions">; > def err_va_arg_in_device : Error< > "CUDA device code does not support va_arg">; > +def err_alias_not_supported_on_nvptx : Error<"CUDA does not support > aliases">; > > def warn_non_pod_vararg_with_format_string : Warning< > "cannot pass %select{non-POD|non-trivial}0 object of type %1 to > variadic " > > >
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