We currently call the `llvm_unreachable` for the following YAML:
```
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_NONE
Flags: [ ]
```
it happens because the `Flags` key is present, though `EM_NONE` is a
machine type that has no known `EF_*` values and we call `llvm_unreachable` by mistake.
Differential revision: https://reviews.llvm.org/D86138
BCase(EF_AMDGPU_XNACK);
BCase(EF_AMDGPU_SRAM_ECC);
break;
- case ELF::EM_X86_64:
- break;
default:
- llvm_unreachable("Unsupported architecture");
+ break;
}
#undef BCase
#undef BCaseMask
--- /dev/null
+## Check how the 'Flags' key can be used to encode e_flags field values.
+
+## Check we are able to produce no flags for EM_NONE. EM_NONE is an arbitrary
+## e_machine type that has no EF_* values defined for it.
+# RUN: yaml2obj %s -o %t-no-flags
+# RUN: llvm-readelf --file-headers %t-no-flags | FileCheck %s --check-prefix=NOFLAGS
+
+# NOFLAGS: Flags: 0x0{{$}}
+
+--- !ELF
+FileHeader:
+ Class: ELFCLASS32
+ Data: ELFDATA2LSB
+ Type: ET_REL
+ Machine: EM_NONE
+ Flags: [ ]