Default to -fuse-init-array on OpenBSD.

clang/lib/Driver/ToolChains/OpenBSD.cpp

@@ -313,15 +313,6 @@ std::string OpenBSD::getCompilerRT(const ArgList &Args,
   return std::string(Path.str());
 }
 
-void OpenBSD::addClangTargetOptions(const ArgList &DriverArgs,
-                                    ArgStringList &CC1Args,
-                                    Action::OffloadKind) const {
-  // Support for .init_array is still new (Aug 2016).
-  if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
-                          options::OPT_fno_use_init_array, false))
-    CC1Args.push_back("-fno-use-init-array");
-}
-
 Tool *OpenBSD::buildAssembler() const {
   return new tools::openbsd::Assembler(*this);
 }

clang/lib/Driver/ToolChains/OpenBSD.h

@@ -86,11 +86,6 @@ public:
 
   SanitizerMask getSupportedSanitizers() const override;
 
-  void
-  addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
-                        llvm::opt::ArgStringList &CC1Args,
-                        Action::OffloadKind DeviceOffloadKind) const override;
-
 protected:
   Tool *buildAssembler() const override;
   Tool *buildLinker() const override;

clang/test/Driver/openbsd.c

@@ -122,8 +122,3 @@
 // RUN: %clang -target powerpc-unknown-openbsd -### -c %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=CHECK-POWERPC-SECUREPLT %s
 // CHECK-POWERPC-SECUREPLT: "-target-feature" "+secure-plt"
-
-// Check -fno-init-array
-// RUN: %clang -no-canonical-prefixes -target i686-pc-openbsd %s -### 2>&1 \
-// RUN:   | FileCheck --check-prefix=CHECK-CTORS %s
-// CHECK-CTORS: "-fno-use-init-array"