From 25c95dd44697929df0cd07d2a6ec799a103f01cf Mon Sep 17 00:00:00 2001 From: Volodymyr Sapsai Date: Mon, 13 May 2019 22:11:10 +0000 Subject: [PATCH] Make language option `GNUAsm` discoverable with `__has_extension` macro. This can be used for better support of `-fno-gnu-inline-asm` builds. rdar://problem/49540880 Reviewers: aaron.ballman, rsmith Reviewed By: aaron.ballman Subscribers: eraman, jkorous, dexonsmith, craig.topper, cfe-commits Differential Revision: https://reviews.llvm.org/D61619 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@360625 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/clang/Basic/Features.def | 1 + test/Parser/asm.c | 4 ++++ test/Parser/no-gnu-inline-asm.c | 4 ++++ 3 files changed, 9 insertions(+) diff --git a/include/clang/Basic/Features.def b/include/clang/Basic/Features.def index c97cbc59bc..7ab7c4d170 100644 --- a/include/clang/Basic/Features.def +++ b/include/clang/Basic/Features.def @@ -248,6 +248,7 @@ EXTENSION(cxx_variable_templates, LangOpts.CPlusPlus) EXTENSION(overloadable_unmarked, true) EXTENSION(pragma_clang_attribute_namespaces, true) EXTENSION(pragma_clang_attribute_external_declaration, true) +EXTENSION(gnu_asm, LangOpts.GNUAsm) #undef EXTENSION #undef FEATURE diff --git a/test/Parser/asm.c b/test/Parser/asm.c index dabb010529..637f9d7ed4 100644 --- a/test/Parser/asm.c +++ b/test/Parser/asm.c @@ -1,5 +1,9 @@ // RUN: %clang_cc1 -fsyntax-only -verify %s +#if !__has_extension(gnu_asm) +#error Extension 'gnu_asm' should be available by default +#endif + void f1() { // PR7673: Some versions of GCC support an empty clobbers section. asm ("ret" : : :); diff --git a/test/Parser/no-gnu-inline-asm.c b/test/Parser/no-gnu-inline-asm.c index 03c2ede948..eda9e0fed6 100644 --- a/test/Parser/no-gnu-inline-asm.c +++ b/test/Parser/no-gnu-inline-asm.c @@ -1,5 +1,9 @@ // RUN: %clang_cc1 %s -triple i686-apple-darwin -verify -fsyntax-only -fno-gnu-inline-asm +#if __has_extension(gnu_asm) +#error Expected extension 'gnu_asm' to be disabled +#endif + asm ("INST r1, 0"); // expected-error {{GNU-style inline assembly is disabled}} void foo() __asm("__foo_func"); // AsmLabel is OK -- 2.40.0