From: Richard Henderson Date: Tue, 13 Aug 2024 10:42:49 +0000 (+0100) Subject: target/arm: Clear high SVE elements in handle_vec_simd_wshli X-Git-Tag: qemu-xen-4.20.0~21^2~2 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=8e0c9a9efa21a16190cbac288e414bbf1d80f639;p=qemu-xen.git target/arm: Clear high SVE elements in handle_vec_simd_wshli AdvSIMD instructions are supposed to zero bits beyond 128. Affects SSHLL, USHLL, SSHLL2, USHLL2. Cc: qemu-stable@nongnu.org Signed-off-by: Richard Henderson Message-id: 20240717060903.205098-15-richard.henderson@linaro.org Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 28a1013503..bc2d64e883 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -10756,6 +10756,7 @@ static void handle_vec_simd_wshli(DisasContext *s, bool is_q, bool is_u, tcg_gen_shli_i64(tcg_rd, tcg_rd, shift); write_vec_element(s, tcg_rd, rd, i, size + 1); } + clear_vec_high(s, true, rd); } /* SHRN/RSHRN - Shift right with narrowing (and potential rounding) */