paul99/v8m-rb — comment on commit 3a0a99399a70179bdfefb450a067e787811ce66f
File:  line 0
By paul99:

If I understand this correctly, the trunc.w.d instruction behaves differently on Loongson/MIPS-III than mips32.

If so, then this change should be encapsulated within a Macro-ized Trunc_w_d() instruction, rather than fixed at the point of use. Otherwise we may have to find this bug again someday.

I don't know if we have the data (or easy ability to test) the other rounding mode instructions in EmitFRPTruncate (round_w_d, ceil_w_d, floor_w_d), but I would guess they have the same issue.

Once resolved, this fix should be merged to the other Loongson patch, so we have just one commit to send upstream.