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tcg/i386: Fix INDEX_op_dup2_vec

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We were only constructing the 64-bit element, and not
replicating the 64-bit element across the rest of the vector.

Backports commit e20cb81d9c5a3d0f9c08f3642728a210a1c162c9 from qemu
This commit is contained in:
Richard Henderson 2020-04-30 07:15:05 -04:00 committed by Lioncash
parent 5ca33a4aaa
commit 299ba4e867
1 changed files with 7 additions and 3 deletions
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10
qemu/tcg/i386/tcg-target.inc.c
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@ -2861,9 +2861,13 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
goto gen_simd;
#if TCG_TARGET_REG_BITS == 32
case INDEX_op_dup2_vec:
/* Constraints have already placed both 32-bit inputs in xmm regs. */
insn = OPC_PUNPCKLDQ;
goto gen_simd;
/* First merge the two 32-bit inputs to a single 64-bit element. */
tcg_out_vex_modrm(s, OPC_PUNPCKLDQ, a0, a1, a2);
/* Then replicate the 64-bit elements across the rest of the vector. */
if (type != TCG_TYPE_V64) {
tcg_out_dup_vec(s, type, MO_64, a0, a0);
}
break;
#endif
case INDEX_op_abs_vec:
insn = abs_insn[vece];