target/arm: Fix PSEL size operands to tcg_gen_gvec_ands

Gvec only operates on size 8 and multiples of 16.
Predicates may be any multiple of 2.
Round up the size using the appropriate function.

Cc: qemu-stable@nongnu.org
Fixes: 598ab0b24c0 ("target/arm: Implement PSEL")
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250704142112.1018902-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 3801c5b75ffc60957265513338e8fd5f8b6ce8a1)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/target/arm/tcg/translate-sve.c b/target/arm/tcg/translate-sve.c
index 40d3a032d6e0032cc8f61ee6085074b096b1d2b5..b6fa0b67b15d701940784324d45292158c56772e 100644 (file)
--- a/target/arm/tcg/translate-sve.c
+++ b/target/arm/tcg/translate-sve.c
@@ -7282,6 +7282,7 @@ static bool trans_PSEL(DisasContext *s, arg_psel *a)
     tcg_gen_neg_i64(tmp, tmp);
 
     /* Apply to either copy the source, or write zeros. */
+    pl = size_for_gvec(pl);
     tcg_gen_gvec_ands(MO_64, pred_full_reg_offset(s, a->pd),
                       pred_full_reg_offset(s, a->pn), tmp, pl, pl);
     return true;