[PS4] Fix the unit test to be compatible with clang driver. NFC

[sgundapa]

Summary

".exe" extension is inherently checked by llvm::fs::can_execute()
This patch fixes the linker extension in clang driver and updates the
unit test to accommodate the the check string on windows.

[probinson]

So, mainly you want calls to GetProgramPath not to provide the .exe extension, even on Windows?

test/Driver/sanitizer-ld.c

382

This doesn't look right. If I try this patch on my Windows, without ps4-ld.gold.exe on my PATH, the linker command comes out as "ps4-ld.gold" which does match this regex, but for the wrong reason.
I think you want "{{.*}}ld{{(.gold)?(.exe)?}}" here.

[sgundapa]

GetProgramPath will take care of the extension.
I will change the line to "{{.*}}ld{{(.gold)?(.exe)?}}" as per your suggestion and push a new patch

[probinson]

LGTM

lib/Driver/Tools.cpp

       CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
     CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
   }
 
   AddPS4ProfileRT(ToolChain, Args, CmdArgs);
 
   const char *Exec =
 #ifdef LLVM_ON_WIN32
-      Args.MakeArgString(ToolChain.GetProgramPath("ps4-ld.gold.exe"));
+      Args.MakeArgString(ToolChain.GetProgramPath("ps4-ld.gold"));
 #else
       Args.MakeArgString(ToolChain.GetProgramPath("ps4-ld"));
 #endif
 
   C.addCommand(llvm::make_unique<Command>(JA, T, Exec, CmdArgs, Inputs));
 }
 
 void PS4cpu::Link::ConstructJob(Compilation &C, const JobAction &JA,

test/Driver/sanitizer-ld.c

 //
 // CHECK-SAFESTACK-ANDROID-AARCH64: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
 // CHECK-SAFESTACK-ANDROID-AARCH64-NOT: libclang_rt.safestack
 
 // RUN: %clang -fsanitize=undefined %s -### -o %t.o 2>&1 \
 // RUN:     -target x86_64-scei-ps4 \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-UBSAN-PS4 %s
-// CHECK-UBSAN-PS4: "{{.*}}ld{{(.exe)?}}"
+// CHECK-UBSAN-PS4: "{{.*}}ld{{(.gold.exe)?}}"
 // CHECK-UBSAN-PS4: -lSceDbgUBSanitizer_stub_weak
 
 // RUN: %clang -fsanitize=address %s -### -o %t.o 2>&1 \
 // RUN:     -target x86_64-scei-ps4 \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ASAN-PS4 %s
-// CHECK-ASAN-PS4: "{{.*}}ld{{(.exe)?}}"
+// CHECK-ASAN-PS4: "{{.*}}ld{{(.gold.exe)?}}"
 // CHECK-ASAN-PS4: -lSceDbgAddressSanitizer_stub_weak
 
 // RUN: %clang -fsanitize=address,undefined %s -### -o %t.o 2>&1 \
 // RUN:     -target x86_64-scei-ps4 \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-AUBSAN-PS4 %s
-// CHECK-AUBSAN-PS4: "{{.*}}ld{{(.exe)?}}"
+// CHECK-AUBSAN-PS4: "{{.*}}ld{{(.gold.exe)?}}"
 // CHECK-AUBSAN-PS4: -lSceDbgAddressSanitizer_stub_weak