diff mbox series

[Stable-8.2.7,45/53] target/arm: Clear high SVE elements in handle_vec_simd_wshli

Message ID 20240906065429.42415-45-mjt@tls.msk.ru (mailing list archive)
State New, archived
Headers show
Series Patch Round-up for stable 8.2.7, freeze on 2024-09-16 | expand

Commit Message

Michael Tokarev Sept. 6, 2024, 6:54 a.m. UTC 
From: Richard Henderson <richard.henderson@linaro.org>

AdvSIMD instructions are supposed to zero bits beyond 128.
Affects SSHLL, USHLL, SSHLL2, USHLL2.

Cc: qemu-stable@nongnu.org
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240717060903.205098-15-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 8e0c9a9efa21a16190cbac288e414bbf1d80f639)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff mbox series

Patch

diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index 2fccd836b7..5beac07b60 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -10141,6 +10141,7 @@  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) */