On 9/21/21 1:18 PM, WANG Xuerui wrote:
+ case INDEX_op_bswap32_i32:
+ /* All 32-bit values are computed sign-extended in the
register. */
+ a2 = TCG_BSWAP_OS;
+ /* fallthrough */
+ case INDEX_op_bswap32_i64:
+ tcg_out_opc_revb_2w(s, a0, a1);
+ if (a2 & TCG_BSWAP_OS) {
+ tcg_out_ext32s(s, a0, a0);
+ } else if ((a2 & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) ==
TCG_BSWAP_OZ) {
+ tcg_out_ext32u(s, a0, a0);
+ }
+ break;
Looks good so far, so:
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
We'll also want INDEX_op_bswap16_{i32,i64}. This should look just
like bswap32_i64, except with revb_2h and ext16{s,u}.