[prev in list] [next in list] [prev in thread] [next in thread] 

List:       qemu-commits
Subject:    [Qemu-commits] [qemu/qemu] e65a5f: tcg/aarch64: limit mul_vec size
From:       GitHub <noreply () github ! com>
Date:       2018-07-20 10:58:33
Message-ID: 5b51c0596f9c3_363d2abb20a29c102664c () hookshot-fe-88eb02d ! cp1-iad ! github ! net ! mail
[Download RAW message or body]


  Branch: refs/heads/master
  Home:   https://github.com/qemu/qemu
  Commit: e65a5f227d77a5dbae7a7123c3ee915ee4bd80cf
      https://github.com/qemu/qemu/commit/e65a5f227d77a5dbae7a7123c3ee915=
ee4bd80cf
  Author: Alex Benn=C3=A9e <alex.bennee@linaro.org>
  Date:   2018-07-19 (Thu, 19 Jul 2018)

  Changed paths:
    M tcg/aarch64/tcg-target.inc.c

  Log Message:
  -----------
  tcg/aarch64: limit mul_vec size

In AdvSIMD we can only do 32x32 integer multiples although SVE is
capable of larger 64 bit multiples. As a result we can end up
generating invalid opcodes. Fix this by only reprting we can emit
mul vector ops if the size is small enough.

Fixes a crash on:

  sve-all-short-v8.3+sve@vq3/insn_mul_z_zi___INC.risu.bin

When running on AArch64 hardware.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Benn=C3=A9e <alex.bennee@linaro.org>
Message-Id: <20180719154248.29669-1-alex.bennee@linaro.org>
[rth: Removed the tcg_debug_assert -- there are plenty of other
cases that we do not diagnose within the insn encoding helpers.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>


  Commit: 5b3ecd3d941a0ae8a8cfbba5ab8139b2bf104822
      https://github.com/qemu/qemu/commit/5b3ecd3d941a0ae8a8cfbba5ab8139b=
2bf104822
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   2018-07-20 (Fri, 20 Jul 2018)

  Changed paths:
    M tcg/aarch64/tcg-target.inc.c

  Log Message:
  -----------
  Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20180719' into =
staging

Fix aarch64 host vector mul

# gpg: Signature made Fri 20 Jul 2018 04:58:32 BST
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.o=
rg>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E =
215F

* remotes/rth/tags/pull-tcg-20180719:
  tcg/aarch64: limit mul_vec size

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>


Compare: https://github.com/qemu/qemu/compare/9d5d247e32ae...5b3ecd3d941a=

      **NOTE:** This service been marked for deprecation: https://develop=
er.github.com/changes/2018-04-25-github-services-deprecation/

      Functionality will be removed from GitHub.com on January 31st, 2019=
.


[prev in list] [next in list] [prev in thread] [next in thread]