From 5db37f3bca3d404b0d7fcbe1dc764ee67665e6c2 Mon Sep 17 00:00:00 2001
From: Douglas Yung <douglas.yung@sony.com>
Date: Thu, 26 Mar 2020 15:45:40 -0700
Subject: [PATCH] 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 | 12 ++++++++++++
 clang/lib/Driver/ToolChains/PS4CPU.h   |  5 +++++
 clang/test/Driver/ps4cpu.c             | 17 +++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 clang/test/Driver/ps4cpu.c

diff --git a/clang/lib/Driver/ToolChains/PS4CPU.cpp b/clang/lib/Driver/ToolChains/PS4CPU.cpp
index 9ecbb72..2c0d8d0 100644
--- a/clang/lib/Driver/ToolChains/PS4CPU.cpp
+++ b/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");
+}
diff --git a/clang/lib/Driver/ToolChains/PS4CPU.h b/clang/lib/Driver/ToolChains/PS4CPU.h
index c82b0c3..8fedb6e 100644
--- a/clang/lib/Driver/ToolChains/PS4CPU.h
+++ b/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,
diff --git a/clang/test/Driver/ps4cpu.c b/clang/test/Driver/ps4cpu.c
new file mode 100644
index 0000000..ac5f3fc
--- /dev/null
+++ b/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'
+
-- 
2.7.4