Handle identifying AMDGPU bitcode files

[ruiu]

LGTM

ELF/InputFiles.cpp

1074–1076

Move this after aarch64 as the cases in this switch are sorted alphabetically.

[arsenm]

r340738

ELF/InputFiles.cpp

static uint8_t getBitcodeMachineKind(StringRef Path, const Triple &T) {
   case Triple::ppc:
     return EM_PPC;
   case Triple::ppc64:
     return EM_PPC64;
   case Triple::x86:
     return T.isOSIAMCU() ? EM_IAMCU : EM_386;
   case Triple::x86_64:
     return EM_X86_64;
+  case Triple::amdgcn:
+  case Triple::r600:
+    return EM_AMDGPU;
   default:
     error(Path + ": could not infer e_machine from bitcode target triple " +
           T.str());
     return EM_NONE;
   }
 }
 
 BitcodeFile::BitcodeFile(MemoryBufferRef MB, StringRef ArchiveName,

test/ELF/lto/amdgcn.ll

+; REQUIRES: amdgpu
+; RUN: llvm-as %s -o %t.o
+; RUN: ld.lld %t.o -o %t
+
+; Make sure the amdgcn triple is handled
+
+target triple = "amdgcn-amd-amdhsa"
+target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5"
+
+define void @_start() {
+  ret void
+}

test/ELF/lto/r600.ll

+; REQUIRES: amdgpu
+; RUN: llvm-as %s -o %t.o
+; RUN: ld.lld %t.o -o %t
+
+; Make sure the r600 triple is handled
+
+target triple = "r600-mesa-mes3d"
+target datalayout = "e-p:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5"
+
+define void @_start() {
+  ret void
+}