tree fd10a7febb6cfe6934d301b2b2dc7b675bade774
parent 870ad1547ac53bc79c21d86cf453b3b20cc660a2
author Richard Henderson <rth@twiddle.net> 1437747360 -0700
committer Richard Henderson <rth@twiddle.net> 1440439854 -0700

tcg: Split trunc_shr_i32 opcode into extr[lh]_i64_i32

Rather than allow arbitrary shift+trunc, only concern ourselves
with low and high parts.  This is all that was being used anyway.

Signed-off-by: Richard Henderson <rth@twiddle.net>