[Bug gas/25438] x86 MOVZ* anomalies for unusual/wrong operand combinations

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25438

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl.tools at gmail dot com

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
movz* with incorrect operands should be rejected, not silently changed
to something else:

[hjl@gnu-snb-1 tmp]$ cat x.s
movzbw  %al, %ecx
movzbw  %al, %rcx
movzbl  %al, %cx
movzbl  %al, %rcx
movzbq  %al, %cx
movzbq  %al, %ecx
[hjl@gnu-snb-1 tmp]$ gcc -c x.s
[hjl@gnu-snb-1 tmp]$ objdump -dw x.o

x.o:     file format elf64-x86-64


Disassembly of section .text:

0000000000000000 <.text>:
   0:   0f b6 c8                movzbl %al,%ecx
   3:   48 0f b6 c8             movzbq %al,%rcx
   7:   66 0f b6 c8             movzbw %al,%cx
   b:   48 0f b6 c8             movzbq %al,%rcx
   f:   66 0f b6 c8             movzbw %al,%cx
  13:   0f b6 c8                movzbl %al,%ecx
[hjl@gnu-snb-1 tmp]$

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