llvm-objdump does not recognize some armv7 instructions accepted by clang

[VoxSciurorum]

If I assemble this file with clang -c -mcpu=cortex-a7 -target armv7-gnueabihf undef.s

msr elr_hyp, lr
eret

llvm-objdump does not recognize instructions in the resulting object:

undef.o:	file format elf32-littlearm

Disassembly of section .text:

00000000 <.text>:
       0: e12ef30e     	<unknown>
       4: e160006e     	<unknown>

[llvmbot]

@llvm/issue-subscribers-backend-arm

Author: John F. Carr (VoxSciurorum)

If I assemble this file with `clang -c -mcpu=cortex-a7 -target armv7-gnueabihf undef.s` ``` msr elr_hyp, lr eret ``` llvm-objdump does not recognize instructions in the resulting object: ``` undef.o: file format elf32-littlearm

Disassembly of section .text:

00000000 <.text>:
0: e12ef30e <unknown>
4: e160006e <unknown>

</details>

[llvmbot]

@llvm/issue-subscribers-tools-llvm-objdump

Author: John F. Carr (VoxSciurorum)

If I assemble this file with `clang -c -mcpu=cortex-a7 -target armv7-gnueabihf undef.s` ``` msr elr_hyp, lr eret ``` llvm-objdump does not recognize instructions in the resulting object: ``` undef.o: file format elf32-littlearm

Disassembly of section .text:

00000000 <.text>:
0: e12ef30e <unknown>
4: e160006e <unknown>

</details>

[svs-quic]

Works for me. Are you passing the --mcpu=cortex-a7 flag to objdump ?

bin/llvm-objdump -d --mcpu=cortex-a7 arm.o

arm.o:	file format elf32-littlearm

Disassembly of section .text:

00000000 <.text>:
       0: e12ef30e     	msr	elr_hyp, lr
       4: e160006e     	eret