[VE] Support R_VE_RELATIVE

Change getELFRelativeRelocationType() to return R_VE_RELATIVE
as a preparation of lld for VE.

Reviewed By: simoll

Differential Revision: https://reviews.llvm.org/D115592

llvm/lib/Object/ELF.cpp

@@ -210,6 +210,8 @@ uint32_t llvm::object::getELFRelativeRelocationType(uint32_t Machine) {
     return ELF::R_SPARC_RELATIVE;
   case ELF::EM_CSKY:
     return ELF::R_CKCORE_RELATIVE;
+  case ELF::EM_VE:
+    return ELF::R_VE_RELATIVE;
   case ELF::EM_AMDGPU:
     break;
   case ELF::EM_BPF:

llvm/unittests/Object/ELFTest.cpp

@@ -53,7 +53,7 @@ TEST(ELFTest, getELFRelocationTypeNameForVE) {
 }
 
 TEST(ELFTest, getELFRelativeRelocationType) {
-  EXPECT_EQ(0U, getELFRelativeRelocationType(EM_VE));
+  EXPECT_EQ(ELF::R_VE_RELATIVE, getELFRelativeRelocationType(EM_VE));
 }
 
 // This is a test for the DataRegion helper struct, defined in ELF.h header.