AMDGPU/RelocVisitor: Handle R_AMDGPU_ABS64 + add dwarfdump test

[arsenm]

LGTM

test/DebugInfo/AMDGPU/dwarfdump-relocs.ll

45 ↗

(On Diff #88686)

Why aren't we using DW_LANG_OpenCL?

[kzhuravl]

test/DebugInfo/AMDGPU/dwarfdump-relocs.ll

45 ↗

(On Diff #88686)

DW_LANG_OpenCL is valid only if the DWARF version >= 5. We generate DWARF version 2.

[kzhuravl]

Test in D30879.

llvm/trunk/include/llvm/Object/RelocVisitor.h

if (ObjToVisit.getBytesInAddress() == 8) { // 64-bit object file
         default:
           HasError = true;
           return RelocToApply();
         }
       case Triple::amdgcn:
         switch (RelocType) {
         case llvm::ELF::R_AMDGPU_ABS32:
           return visitELF_AMDGPU_ABS32(R, Value);
+        case llvm::ELF::R_AMDGPU_ABS64:
+          return visitELF_AMDGPU_ABS64(R, Value);
         default:
           HasError = true;
           return RelocToApply();
         }
       default:
         HasError = true;
         return RelocToApply();
       }
RelocToApply visitELF_HEX_32(RelocationRef R, uint64_t Value) {
     return RelocToApply(Value + Addend, 4);
   }
 
   RelocToApply visitELF_AMDGPU_ABS32(RelocationRef R, uint64_t Value) {
     int64_t Addend = getELFAddend(R);
     return RelocToApply(Value + Addend, 4);
   }
 
+  RelocToApply visitELF_AMDGPU_ABS64(RelocationRef R, uint64_t Value) {
+    int64_t Addend = getELFAddend(R);
+    return RelocToApply(Value + Addend, 8);
+  }
+
   /// I386 COFF
   RelocToApply visitCOFF_I386_SECREL(RelocationRef R, uint64_t Value) {
     return RelocToApply(static_cast<uint32_t>(Value), /*Width=*/4);
   }
 
   RelocToApply visitCOFF_I386_DIR32(RelocationRef R, uint64_t Value) {
     return RelocToApply(static_cast<uint32_t>(Value), /*Width=*/4);
   }