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[Driver] Fuchsia targets default to -fasynchronous-unwind-tables 

This regressed for x86-64 in r307856 because it's no longer inherited
from Generic_GCC. We'd never noticed that it was missing other
targets (i.e. aarch64), but Fuchsia is uniform across all machines.

Patch by Roland McGrath

Differential Revision: https://reviews.llvm.org/D37723

llvm-svn: 312989
This commit is contained in:
Petr Hosek 2017-09-12 01:28:37 +00:00
parent 1e9a4ab031
commit e63da24f57
2 changed files with 11 additions and 2 deletions
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3
clang/lib/Driver/ToolChains/Fuchsia.h
View File

@ -49,6 +49,9 @@ public:
CXXStdlibType GetDefaultCXXStdlibType() const override {
return ToolChain::CST_Libcxx;
}
bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const override {
return true;
}
bool isPICDefault() const override { return false; }
bool isPIEDefault() const override { return true; }
bool isPICDefaultForced() const override { return false; }

10
clang/test/Driver/fuchsia.c
View File

@ -1,6 +1,11 @@
// RUN: %clang %s -### -no-canonical-prefixes --target=x86_64-unknown-fuchsia \
// RUN: --sysroot=%S/platform -fuse-ld=ld 2>&1 | FileCheck %s
// RUN: --sysroot=%S/platform -fuse-ld=ld 2>&1 \
// RUN: | FileCheck -check-prefixes=CHECK,CHECK-X86_64 %s
// RUN: %clang %s -### -no-canonical-prefixes --target=aarch64-unknown-fuchsia \
// RUN: --sysroot=%S/platform -fuse-ld=ld 2>&1 \
// RUN: | FileCheck -check-prefixes=CHECK,CHECK-AARCH64 %s
// CHECK: {{.*}}clang{{.*}}" "-cc1"
// CHECK: "-munwind-tables"
// CHECK: "-fuse-init-array"
// CHECK: "-isysroot" "[[SYSROOT:[^"]+]]"
// CHECK: "-internal-externc-isystem" "[[SYSROOT]]{{/|\\\\}}include"
@ -15,7 +20,8 @@
// CHECK-NOT: crti.o
// CHECK-NOT: crtbegin.o
// CHECK: "-L[[SYSROOT]]{{/|\\\\}}lib"
// CHECK: "{{.*[/\\]}}libclang_rt.builtins-x86_64.a"
// CHECK-X86_64: "{{.*[/\\]}}libclang_rt.builtins-x86_64.a"
// CHECK-AARCH64: "{{.*[/\\]}}libclang_rt.builtins-aarch64.a"
// CHECK: "-lc"
// CHECK-NOT: crtend.o
// CHECK-NOT: crtn.o