Make PS4 use -fno-use-init-array only as the ABI does not support .init_array.

Reviewed by Paul Robinson

clang/lib/Driver/ToolChains/PS4CPU.cpp

@@ -434,3 +434,15 @@ SanitizerMask toolchains::PS4CPU::getSupportedSanitizers() const {
   Res |= SanitizerKind::Vptr;
   return Res;
 }
+
+void toolchains::PS4CPU::addClangTargetOptions(
+      const ArgList &DriverArgs,
+      ArgStringList &CC1Args,
+      Action::OffloadKind DeviceOffloadingKind) const {
+  // PS4 does not use init arrays.
+  if (DriverArgs.hasArg(clang::driver::options::OPT_fuse_init_array))
+    getDriver().Diag(clang::diag::err_drv_unsupported_opt_for_target)
+      << "-fuse-init-array" << getTriple().str();
+
+  CC1Args.push_back("-fno-use-init-array");
+}

clang/lib/Driver/ToolChains/PS4CPU.h

@@ -88,6 +88,11 @@ public:
   // capable of unit splitting.
   bool canSplitThinLTOUnit() const override { return false; }
 
+  void addClangTargetOptions(
+    const llvm::opt::ArgList &DriverArgs,
+    llvm::opt::ArgStringList &CC1Args,
+    Action::OffloadKind DeviceOffloadingKind) const override;
+
   llvm::DenormalMode getDefaultDenormalModeForType(
     const llvm::opt::ArgList &DriverArgs,
     Action::OffloadKind DeviceOffloadKind,

clang/test/Driver/ps4cpu.c

@@ -0,0 +1,17 @@
+// REQUIRES: x86-registered-target
+
+// Test that the driver always emits -fno-use-init-array on the PS4 target
+// since its ABI does not support the .init_array section.
+
+// RUN: %clang -c %s -target x86_64-scei-ps4 -### 2>&1                      \
+// RUN:   | FileCheck %s
+// RUN: %clang -c %s -target x86_64-scei-ps4 -fno-use-init-array -### 2>&1  \
+// RUN:   | FileCheck %s
+// RUN: %clang -c %s -target x86_64-scei-ps4 -fuse-init-array -### 2>&1     \
+// RUN:   | FileCheck %s --check-prefix=CHECK-ERROR
+
+// CHECK: "-fno-use-init-array"
+// CHECK-NOT: "-fuse-init-array"
+
+// CHECK-ERROR: unsupported option '-fuse-init-array' for target 'x86_64-scei-ps4'
+