[libclc] Consolidate `amdgpu` and `amdgcn` architectures consistently (#197233)

Summary:
Currently we did not pass all checks with amdgpu triple as we did with
amdgcn. SPIR-V set this pattern so let's make it consistent.
GitOrigin-RevId: 9a39c60406638ee8545d432e7f22a5ecd253c24d

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 334faa1..e6fdff6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,9 +23,10 @@
 )
 
 # List of all supported architectures.
-set( LIBCLC_ARCHS_ALL amdgpu amdgcn nvptx64 )
+set( LIBCLC_ARCHS_NVPTX nvptx64 )
+set( LIBCLC_ARCHS_AMDGPU amdgpu amdgcn )
 set( LIBCLC_ARCHS_SPIRV spirv spirv32 spirv64 )
-list( APPEND LIBCLC_ARCHS_ALL ${LIBCLC_ARCHS_SPIRV} )
+list( APPEND LIBCLC_ARCHS_ALL ${LIBCLC_ARCHS_AMDGPU} ${LIBCLC_ARCHS_NVPTX} ${LIBCLC_ARCHS_SPIRV} )
 
 set(LIBCLC_TARGET ${LLVM_DEFAULT_TARGET_TRIPLE})
 
@@ -102,9 +103,9 @@
 message(STATUS "libclc target '${LIBCLC_TARGET}' is enabled")
 
 # Map the LLVM target architecture to the standard directory name.
-if(LIBCLC_TARGET_ARCH STREQUAL amdgcn OR LIBCLC_TARGET_ARCH STREQUAL amdgpu)
+if(LIBCLC_TARGET_ARCH IN_LIST LIBCLC_ARCHS_AMDGPU)
   set(LIBCLC_ARCH_DIR amdgpu)
-elseif(LIBCLC_TARGET_ARCH STREQUAL nvptx64)
+elseif(LIBCLC_TARGET_ARCH IN_LIST LIBCLC_ARCHS_NVPTX)
   set(LIBCLC_ARCH_DIR nvptx)
 elseif(LIBCLC_TARGET_ARCH IN_LIST LIBCLC_ARCHS_SPIRV)
   set(LIBCLC_ARCH_DIR spirv)
@@ -138,7 +139,7 @@
 # Address space values.
 set(private_addrspace_val 0)
 set(generic_addrspace_val 0)
-if(LIBCLC_TARGET_ARCH STREQUAL amdgcn)
+if(LIBCLC_TARGET_ARCH IN_LIST LIBCLC_ARCHS_AMDGPU)
   set(private_addrspace_val 5)
 endif()
 if(LIBCLC_TARGET_ARCH IN_LIST LIBCLC_ARCHS_SPIRV AND NOT LIBCLC_TARGET_OS STREQUAL vulkan)
@@ -158,7 +159,7 @@
     list(APPEND target_extra_defines CLC_SPIRV)
     set(opt_flags)
   endif()
-elseif(LIBCLC_TARGET_ARCH STREQUAL amdgcn)
+elseif(LIBCLC_TARGET_ARCH IN_LIST LIBCLC_ARCHS_AMDGPU)
   list(APPEND target_compile_flags "SHELL:-Xclang -mcode-object-version=none")
 endif()