[Clang][Driver] Enable internalization by default for AMDGPU (llvm#138365)

Author: shiltian

clang/lib/Driver/ToolChains/Clang.cpp

@@ -9284,6 +9284,12 @@ void LinkerWrapper::ConstructJob(Compilation &C, const JobAction &JA,
         CmdArgs.push_back(Args.MakeArgString(
             "--device-linker=" + TC->getTripleString() + "=" + Arg));
 
+      // Enable internalization for AMDGPU.
+      if (TC->getTriple().isAMDGPU())
+        CmdArgs.push_back(
+            Args.MakeArgString("--device-linker=" + TC->getTripleString() +
+                               "=-plugin-opt=-amdgpu-internalize-symbols"));
+
       // Forward the LTO mode relying on the Driver's parsing.
       if (C.getDriver().getOffloadLTOMode() == LTOK_Full)
         CmdArgs.push_back(Args.MakeArgString(

clang/test/Driver/hip-options.hip

@@ -259,3 +259,9 @@
 // RUN:   --offload-arch=gfx1100 --offload-new-driver --offload-jobs=0x4 %s 2>&1 | \
 // RUN:   FileCheck -check-prefix=INVJOBS %s
 // INVJOBS: clang: error: invalid integral value '0x4' in '--offload-jobs=0x4'
+
+// Check that internalization is enabled for offloading on AMDGPU.
+// RUN: %clang -### -Werror --target=x86_64-unknown-linux-gnu -nogpuinc -nogpulib \
+// RUN:   --offload-arch=gfx1100 --offload-new-driver %s 2>&1 | \
+// RUN:   FileCheck -check-prefix=INTERNALIZATION %s
+// INTERNALIZATION: --device-linker=amdgcn-amd-amdhsa=-plugin-opt=-amdgpu-internalize-symbols

clang/test/Driver/openmp-offload-gpu.c

@@ -393,3 +393,10 @@
 // RUN:     --offload-arch=sm_52 -foffload-lto=thin -nogpulib -nogpuinc %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=THINLTO-SM52 %s
 // THINLTO-SM52: --device-compiler=nvptx64-nvidia-cuda=-flto=thin
+
+// Check that internalization is enabled for OpenMP offloading on AMDGPU.
+//
+// RUN:   %clang -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp \
+// RUN:     --offload-arch=gfx906 -nogpulib -nogpuinc %s 2>&1 \
+// RUN:   | FileCheck --check-prefix=INTERNALIZATION-GFX906 %s
+// INTERNALIZATION-GFX906: --device-linker=amdgcn-amd-amdhsa=-plugin-opt=-amdgpu-internalize-symbols