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target/arm: Fix tcg_gen_gvec_dup_imm vs DUP (indexed)

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DUP (indexed) can duplicate 128-bit elements, so using esz
unconditionally can assert in tcg_gen_gvec_dup_imm.

Fixes: 8711e71f9cbb

Backports commit 7e17d50ebd359ee5fa3d65d7fdc0fe0336d60694 from qemu
This commit is contained in:
Richard Henderson 2020-05-11 17:22:45 -04:00 committed by Lioncash
parent 5c03efd5d6
commit 4be4ca57b1
1 changed files with 5 additions and 1 deletions
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6
qemu/target/arm/translate-sve.c
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@ -2159,7 +2159,11 @@ static bool trans_DUP_x(DisasContext *s, arg_DUP_x *a)
unsigned nofs = vec_reg_offset(s, a->rn, index, esz);
tcg_gen_gvec_dup_mem(tcg_ctx, esz, dofs, nofs, vsz, vsz);
} else {
tcg_gen_gvec_dup_imm(tcg_ctx, esz, dofs, vsz, vsz, 0);
/*
* While dup_mem handles 128-bit elements, dup_imm does not.
* Thankfully element size doesn't matter for splatting zero.
*/
tcg_gen_gvec_dup_imm(tcg_ctx, MO_64, dofs, vsz, vsz, 0);
}
}
return true;