[AMDGPU] Replace gfx940 and gfx941 with gfx942 in offload and libclc

gfx940 and gfx941 are no longer supported. This is one of a series of
PRs to remove them from the code base.

For SWDEV-512631 and SWDEV-512633

Author: ritter-x2a

flang/cmake/modules/AddFlangOffloadRuntime.cmake

@@ -98,7 +98,7 @@ macro(enable_omp_offload_compilation files)
 
       set(all_amdgpu_architectures
         "gfx700;gfx701;gfx801;gfx803;gfx900;gfx902;gfx906"
-        "gfx908;gfx90a;gfx90c;gfx940;gfx1010;gfx1030"
+        "gfx908;gfx90a;gfx90c;gfx942;gfx1010;gfx1030"
         "gfx1031;gfx1032;gfx1033;gfx1034;gfx1035;gfx1036"
         "gfx1100;gfx1101;gfx1102;gfx1103;gfx1150;gfx1151"
         "gfx1152;gfx1153"

libc/docs/gpu/using.rst

@@ -44,7 +44,7 @@ this shouldn't be necessary.
 
   $> clang openmp.c -fopenmp --offload-arch=gfx90a -Xoffload-linker -lc
   $> clang cuda.cu --offload-arch=sm_80 --offload-new-driver -fgpu-rdc -Xoffload-linker -lc
-  $> clang hip.hip --offload-arch=gfx940 --offload-new-driver -fgpu-rdc -Xoffload-linker -lc
+  $> clang hip.hip --offload-arch=gfx942 --offload-new-driver -fgpu-rdc -Xoffload-linker -lc
 
 This will automatically link in the needed function definitions if they were
 required by the user's application. Normally using the ``-fgpu-rdc`` option

libclc/CMakeLists.txt

@@ -211,7 +211,7 @@ set( cayman_aliases aruba )
 set( tahiti_aliases pitcairn verde oland hainan bonaire kabini kaveri hawaii
   mullins tonga tongapro iceland carrizo fiji stoney polaris10 polaris11
   gfx602 gfx705 gfx805
-  gfx900 gfx902 gfx904 gfx906 gfx908 gfx909 gfx90a gfx90c gfx940 gfx941 gfx942
+  gfx900 gfx902 gfx904 gfx906 gfx908 gfx909 gfx90a gfx90c gfx942
   gfx1010 gfx1011 gfx1012 gfx1013
   gfx1030 gfx1031 gfx1032 gfx1033 gfx1034 gfx1035 gfx1036
   gfx1100 gfx1101 gfx1102 gfx1103

offload/plugins-nextgen/amdgpu/src/rtl.cpp

@@ -2854,12 +2854,6 @@ struct AMDGPUDeviceTy : public GenericDeviceTy, AMDGenericDeviceTy {
   Error checkIfAPU() {
     // TODO: replace with ROCr API once it becomes available.
     llvm::StringRef StrGfxName(ComputeUnitKind);
-    IsAPU = llvm::StringSwitch<bool>(StrGfxName)
-                .Case("gfx940", true)
-                .Default(false);
-    if (IsAPU)
-      return Plugin::success();
-
     bool MayBeAPU = llvm::StringSwitch<bool>(StrGfxName)
                         .Case("gfx942", true)
                         .Default(false);

offload/test/lit.cfg

@@ -134,12 +134,10 @@ elif config.libomptarget_current_target.startswith('amdgcn'):
     # amdgpu_test_arch contains a list of AMD GPUs in the system
     # only check the first one assuming that we will run the test on it.
     if not (config.amdgpu_test_arch.startswith("gfx90a") or
-            config.amdgpu_test_arch.startswith("gfx940") or
             config.amdgpu_test_arch.startswith("gfx942")):
        supports_unified_shared_memory = False
     # check if AMD architecture is an APU:
-    if (config.amdgpu_test_arch.startswith("gfx940") or
-        (config.amdgpu_test_arch.startswith("gfx942") and
+    if ((config.amdgpu_test_arch.startswith("gfx942") and
          evaluate_bool_env(config.environment['IS_APU']))):
        supports_apu = True
 if supports_unified_shared_memory: