https://sourceware.org/bugzilla/show_bug.cgi?id=23665
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Also:
[hjl@gnu-tools-1 testsuite]$ cat x.s
vmovq %xmm4,%xmm4
vmovq %xmm4,(%ecx)
[hjl@gnu-tools-1 testsuite]$ as -mavxscalar=256 --32 -o x.o x.s
[hjl@gnu-tools-1 testsuite]$ objdump -dw x.o
x.o: file format elf32-i386
Disassembly of section .text:
00000000 <.text>:
0: c5 fe 7e e4 vmovq %xmm4,%xmm4
4: c5 fd d6 21 vmovq %xmm4,(%ecx)
[hjl@gnu-tools-1 testsuite]$
[hjl@gnu-tools-1 sde-external-8.16.0-2018-01-30-lin]$ ./xed -d c5 fe 7e e4
C5FE7EE4
ERROR: GENERAL_ERROR Could not decode at offset: 0x0 PC: 0x0:
[C5FE7EE40000000000000000000000]
[hjl@gnu-tools-1 sde-external-8.16.0-2018-01-30-lin]$
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