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 "
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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