[Bug gas/24076] New: LWPINS not handled correctly in Intel syntax

[abel at cs dot uni-saarland.de]

https://sourceware.org/bugzilla/show_bug.cgi?id=24076

            Bug ID: 24076
           Summary: LWPINS not handled correctly in Intel syntax
           Product: binutils
           Version: 2.31
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: abel at cs dot uni-saarland.de
  Target Milestone: ---

For the instruction "lwpins rax,DWORD PTR [rax],0x1", gas reports "Error: no
instruction mnemonic suffix given; can't determine immediate size".

"lwpins rax, [rax],0x1" is assembled properly. 

objdump disassembles it as "lwpins rax,DWORD PTR [rax],0x1":

$ objdump -Mintel -d asm.o

asm.o:     file format elf64-x86-64


Disassembly of section .text:

0000000000000000 <.text>:
   0:   8f ea f8 12 00 01 00    lwpins rax,DWORD PTR [rax],0x1
   7:   00 00

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