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[Bug gas/24348] New: GNU (g)as is confusing about vmovdqu mnemonics
From: |
hgreving at google dot com |
Subject: |
[Bug gas/24348] New: GNU (g)as is confusing about vmovdqu mnemonics |
Date: |
Fri, 15 Mar 2019 13:40:10 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=24348
Bug ID: 24348
Summary: GNU (g)as is confusing about vmovdqu mnemonics
Product: binutils
Version: 2.30
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: hgreving at google dot com
Target Milestone: ---
1) vmovdqu %ymm0, %ymm1
as --64 -o test.o test.s
Assembles ok.
2) vmovdqu %ymm0, %ymm16
as --64 -o test.o test.s
test.s: Assembler messages:
test.s:1: Error: unsupported instruction `vmovdqu'
2) Requires the vmovdqu<8/16/32/64> mnemonic. I understand that vmovdqu is the
VEX version, while vmovdqu<8/16/32/64> encodes as EVEX. I also understand that
2) requires EVEX. However, I don't see a reason why 2) could not default to one
version of vmovdqu<8/16/32/64> with writemask k0. If it doesn't, the
consequence is that inline asm e.g. written in C needs to write vmovdqu for ymm
<= 15 and vmovsqu32 for ymm > 15. This is inconvenient e.g. for macros.
#ifdef __AVX__
vmovdqu ymm0, []
[..]
vmovdqu ymm15, []
#ifdef __AVX512F__
vmovdqu32 ymm15, []
[..]
vmovdqu32 ymm31, []
#endif
#endif
as --version
GNU assembler (GNU Binutils for Debian) 2.30
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or later.
This program has absolutely no warranty.
This assembler was configured for a target of `x86_64-linux-gnu'.
Thanks in advance!0000000000
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- [Bug gas/24348] New: GNU (g)as is confusing about vmovdqu mnemonics,
hgreving at google dot com <=
- [Bug gas/24348] GNU (g)as is confusing about vmovdqu mnemonics, hgreving at google dot com, 2019/03/15
- [Bug gas/24348] GNU (g)as is confusing about vmovdqu mnemonics, hgreving at google dot com, 2019/03/15
- [Bug gas/24348] GNU (g)as is confusing about vmovdqu mnemonics, hjl.tools at gmail dot com, 2019/03/15
- [Bug gas/24348] GNU (g)as is confusing about vmovdqu mnemonics, hjl.tools at gmail dot com, 2019/03/15
- [Bug gas/24348] GNU (g)as is confusing about vmovdqu mnemonics, cvs-commit at gcc dot gnu.org, 2019/03/17
- [Bug gas/24348] GNU (g)as is confusing about vmovdqu mnemonics, hjl.tools at gmail dot com, 2019/03/17