[PS5][Driver] Link main components with -pie by default (llvm#102901)

The PS5 linker currently forces `-pie` for typical link jobs. Have the
driver pass `pie` under the same conditions. With this change we can
remove our private linker patch and also allow `-no-pie` to have an
effect.

SIE tracker: TOOLCHAIN-16704

Author: playstation-edd

clang/lib/Driver/ToolChains/PS4CPU.cpp

@@ -237,7 +237,10 @@ void tools::PS5cpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   if (!D.SysRoot.empty())
     CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
 
-  if (Args.hasArg(options::OPT_pie))
+  // Default to PIE for non-static executables.
+  const bool PIE =
+      !Args.hasArg(options::OPT_r, options::OPT_shared, options::OPT_static);
+  if (Args.hasFlag(options::OPT_pie, options::OPT_no_pie, PIE))
     CmdArgs.push_back("-pie");
 
   if (Args.hasArg(options::OPT_static))

clang/test/Driver/ps5-linker.c

@@ -1,3 +1,19 @@
+// Test that PIE is the default for main components
+
+// RUN: %clang --target=x86_64-scei-ps5 %s -### 2>&1 | FileCheck --check-prefixes=CHECK-PIE %s
+
+// CHECK-PIE: {{ld(\.exe)?}}"
+// CHECK-PIE-SAME: "-pie"
+
+// RUN: %clang --target=x86_64-scei-ps5 -no-pie %s -### 2>&1 | FileCheck --check-prefixes=CHECK-NO-PIE %s
+// RUN: %clang --target=x86_64-scei-ps5 -r %s -### 2>&1 | FileCheck --check-prefixes=CHECK-NO-PIE %s
+// RUN: %clang --target=x86_64-scei-ps5 -shared %s -### 2>&1 | FileCheck --check-prefixes=CHECK-NO-PIE,CHECK-SHARED %s
+// RUN: %clang --target=x86_64-scei-ps5 -static %s -### 2>&1 | FileCheck --check-prefixes=CHECK-NO-PIE %s
+
+// CHECK-NO-PIE: {{ld(\.exe)?}}"
+// CHECK-NO-PIE-NOT: "-pie"
+// CHECK-SHARED: "--shared"
+
 // Test that -static is forwarded to the linker
 
 // RUN: %clang --target=x86_64-scei-ps5 -static %s -### 2>&1 | FileCheck --check-prefixes=CHECK-STATIC %s