https://sourceware.org/bugzilla/show_bug.cgi?id=24945
Bug ID: 24945
Summary: as/objdump accepting invalid default destination mask.
Product: binutils
Version: 2.32
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: hgreving at google dot com
Target Milestone: ---
A %k0 default mask is not allowed for all scatter/gather instructions in
AVX-512. Looks like as/objdump accept it, for example:
cat test.s
.byte 0x62
.byte 0xf2
.byte 0x7d
.byte 0x08
.byte 0x90
.byte 0x04
.byte 0x48
as test.s
objdump -d a.out
a.out: file format elf64-x86-64
Disassembly of section .text:
0000000000000000 <.text>:
0: 62 f2 7d 08 90 04 48 vpgatherdd (%rax,%xmm1,2),%xmm0
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