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From: | Richard Henderson |
Subject: | Re: [PATCH] target/arm: Fix alignment for VLD4.32 |
Date: | Wed, 14 Sep 2022 14:11:34 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 |
On 9/14/22 11:50, Clément Chigot wrote:
When requested, the alignment for VLD4.32 is 8 and not 16. See ARM documentation about VLD4 encoding: ebytes = 1 << UInt(size); if size == '10' then alignment = if a == '0' then 1 else 8; else alignment = if a == '0' then 1 else 4*ebytes; Signed-off-by: Clément Chigot <chigot@adacore.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
--- target/arm/translate-neon.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c index 321c17e2c7..4016339d46 100644 --- a/target/arm/translate-neon.c +++ b/target/arm/translate-neon.c @@ -584,7 +584,11 @@ static bool trans_VLD_all_lanes(DisasContext *s, arg_VLD_all_lanes *a) case 3: return false; case 4: - align = pow2_align(size + 2); + if (size == 2) { + align = pow2_align(3); + } else { + align = pow2_align(size + 2); + } break; default: g_assert_not_reached();
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