Author: Fangrui Song Date: 2020-11-24T09:51:32-08:00 New Revision: f96fef89b5eca29f2dc41e97829c20bf742cdcd9
URL: https://github.com/llvm/llvm-project/commit/f96fef89b5eca29f2dc41e97829c20bf742cdcd9 DIFF: https://github.com/llvm/llvm-project/commit/f96fef89b5eca29f2dc41e97829c20bf742cdcd9.diff LOG: [Driver] Default Generic_GCC aarch64 to -fasynchronous-unwind-tables In GCC, `aarch64-*-linux` and `aarch64-*-freebsd` made the switch in 2018 (https://gcc.gnu.org/pipermail/gcc-patches/2018-March/495549.html). In Clang, FreeBSD/Fuchsia/NetBSD/MinGW aarch64 default to -fasynchronous-unwind-tables. This patch defaults Generic_GCC aarch64 (which affects Linux) to use -fasynchronous-unwind-tables. Reviewed By: nickdesaulniers Differential Revision: https://reviews.llvm.org/D91760 Added: Modified: clang/lib/Driver/ToolChains/Gnu.cpp clang/test/Driver/aarch64-features.c Removed: ################################################################################ diff --git a/clang/lib/Driver/ToolChains/Gnu.cpp b/clang/lib/Driver/ToolChains/Gnu.cpp index 7d75e90c6092..08158ba4bae8 100644 --- a/clang/lib/Driver/ToolChains/Gnu.cpp +++ b/clang/lib/Driver/ToolChains/Gnu.cpp @@ -2672,7 +2672,13 @@ void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { } bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const { - return getArch() == llvm::Triple::x86_64; + switch (getArch()) { + case llvm::Triple::aarch64: + case llvm::Triple::x86_64: + return true; + default: + return false; + } } bool Generic_GCC::isPICDefault() const { diff --git a/clang/test/Driver/aarch64-features.c b/clang/test/Driver/aarch64-features.c index 7c3f8754049a..8d8cc3c68afe 100644 --- a/clang/test/Driver/aarch64-features.c +++ b/clang/test/Driver/aarch64-features.c @@ -1,6 +1,8 @@ // RUN: %clang -target aarch64-none-linux-gnu -### %s -fsyntax-only 2>&1 | FileCheck %s // RUN: %clang -target arm64-none-linux-gnu -### %s -fsyntax-only 2>&1 | FileCheck %s +// CHECK: "-munwind-tables" + // The AArch64 PCS states that chars should be unsigned. // CHECK: fno-signed-char _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
