[HIP] Always respect --gpu-bundle-output in the new driver (#150989)

Summary:
This is a bit of an awkward transition point for the new and old
drivers. Previously AMDGPU uses this to generate offloading bundles, but
the new driver much prefers to output the file itself. This patch
changes the behavior to always respect `--gpu-bundle-output` instead of
having it be the default behavior. This means that we effectively get to
override the default new driver behavior with this flag now. This should
hoepfully fix some errors in the downstream comgr tests.

Author: jhuber6

clang/lib/Driver/Driver.cpp

@@ -4919,13 +4919,14 @@ Action *Driver::BuildOffloadingActions(Compilation &C,
   }
 
   // HIP code in device-only non-RDC mode will bundle the output if it invoked
-  // the linker.
+  // the linker or if the user explicitly requested it.
   bool ShouldBundleHIP =
-      HIPNoRDC && offloadDeviceOnly() &&
       Args.hasFlag(options::OPT_gpu_bundle_output,
-                   options::OPT_no_gpu_bundle_output, true) &&
-      !llvm::any_of(OffloadActions,
-                    [](Action *A) { return A->getType() != types::TY_Image; });
+                   options::OPT_no_gpu_bundle_output, false) ||
+      (HIPNoRDC && offloadDeviceOnly() &&
+       llvm::none_of(OffloadActions, [](Action *A) {
+         return A->getType() != types::TY_Image;
+       }));
 
   // All kinds exit now in device-only mode except for non-RDC mode HIP.
   if (offloadDeviceOnly() && !ShouldBundleHIP)

clang/test/Driver/hip-binding.hip

@@ -61,7 +61,7 @@
 // MULTI-D-ONLY-NEXT: # "amdgcn-amd-amdhsa" - "clang", inputs: ["[[INPUT]]"], output: "[[GFX90a:.+]]"
 // MULTI-D-ONLY-NEXT: # "amdgcn-amd-amdhsa" - "AMDGCN::Linker", inputs: ["[[GFX90a]]"], output: "[[GFX90a_OUT:.+]]"
 //
-// RUN: not %clang -### --target=x86_64-linux-gnu --offload-new-driver -ccc-print-bindings -nogpulib -nogpuinc \
+// RUN: not %clang -### --target=x86_64-linux-gnu --offload-new-driver -ccc-print-bindings -nogpulib -nogpuinc -emit-llvm \
 // RUN:        --no-gpu-bundle-output --offload-arch=gfx90a --offload-arch=gfx908 --offload-device-only -c -o %t %s 2>&1 \
 // RUN: | FileCheck -check-prefix=MULTI-D-ONLY-NO-BUNDLE-O %s
 // MULTI-D-ONLY-NO-BUNDLE-O: error: cannot specify -o when generating multiple output files
@@ -75,6 +75,13 @@
 // MULTI-D-ONLY-O-NEXT: "amdgcn-amd-amdhsa" - "AMDGCN::Linker", inputs: ["[[GFX90A_OBJ]]"], output: "[[GFX90A:.+]]"
 // MULTI-D-ONLY-O-NEXT: "amdgcn-amd-amdhsa" - "AMDGCN::Linker", inputs: ["[[GFX908]]", "[[GFX90A]]"], output: "a.out"
 
+// RUN: %clang -### --target=x86_64-linux-gnu --offload-new-driver -ccc-print-bindings -nogpulib -nogpuinc -emit-llvm \
+// RUN:        --gpu-bundle-output --offload-arch=gfx90a --offload-arch=gfx908 --offload-device-only -c -o a.out %s 2>&1 \
+// RUN: | FileCheck -check-prefix=MULTI-D-ONLY-BC %s
+//      MULTI-D-ONLY-BC: "amdgcn-amd-amdhsa" - "clang", inputs: ["[[INPUT:.+]]"], output: "[[GFX908_BC:.+]]"
+// MULTI-D-ONLY-BC-NEXT: "amdgcn-amd-amdhsa" - "clang", inputs: ["[[INPUT]]"], output: "[[GFX90A_BC:.+]]"
+// MULTI-D-ONLY-BC-NEXT: "amdgcn-amd-amdhsa" - "AMDGCN::Linker", inputs: ["[[GFX908_BC]]", "[[GFX90A_BC]]"], output: "a.out"
+
 //
 // Check to ensure that we can use '-fsyntax-only' for HIP output with the new
 // driver.