Author: jlebar Date: Sat Jan 23 15:28:10 2016 New Revision: 258641 URL: http://llvm.org/viewvc/llvm-project?rev=258641&view=rev Log: [CUDA] Reject the alias attribute in CUDA device code.
Summary: CUDA (well, strictly speaking, NVPTX) doesn't support aliases. Reviewers: echristo Subscribers: cfe-commits, jhen, tra Differential Revision: http://reviews.llvm.org/D16502 Added: cfe/trunk/test/SemaCUDA/alias.cu Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td cfe/trunk/lib/Sema/SemaDeclAttr.cpp Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=258641&r1=258640&r2=258641&view=diff ============================================================================== --- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original) +++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Sat Jan 23 15:28:10 2016 @@ -6425,6 +6425,7 @@ def warn_kern_is_inline : Warning< InGroup<CudaCompat>; 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 " Modified: cfe/trunk/lib/Sema/SemaDeclAttr.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDeclAttr.cpp?rev=258641&r1=258640&r2=258641&view=diff ============================================================================== --- cfe/trunk/lib/Sema/SemaDeclAttr.cpp (original) +++ cfe/trunk/lib/Sema/SemaDeclAttr.cpp Sat Jan 23 15:28:10 2016 @@ -1557,6 +1557,9 @@ static void handleAliasAttr(Sema &S, Dec 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)) { Added: cfe/trunk/test/SemaCUDA/alias.cu URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCUDA/alias.cu?rev=258641&view=auto ============================================================================== --- cfe/trunk/test/SemaCUDA/alias.cu (added) +++ cfe/trunk/test/SemaCUDA/alias.cu Sat Jan 23 15:28:10 2016 @@ -0,0 +1,11 @@ +// 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 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
