| commit | 2552d60ebd6c519027d74bd452db7580b90e5cbd | |
| author | Richard Henderson <richard.henderson@linaro.org> | |
| Tue, 15 Sep 2020 02:25:58 +0000 (14 19:25 -0700) | ||
| committer | Richard Henderson <richard.henderson@linaro.org> | |
| Tue, 5 Oct 2021 23:53:17 +0000 (5 16:53 -0700) | ||
| tree | c54c359e398a1f3dc4cc4fb85dc72560cbc82864 | treesnapshot (tar.gz zip) |
| parent | dc29f4746fc8c641fb1182495c2662381cc16e23 | commitdiff |
tcg: Expand usadd/ussub with umin/umax
For usadd, we only have to consider overflow. Since ~B + B == -1,
the maximum value for A that saturates is ~B.
For ussub, we only have to consider underflow. The minimum value
that saturates to 0 from A - B is B.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
For usadd, we only have to consider overflow. Since ~B + B == -1,
the maximum value for A that saturates is ~B.
For ussub, we only have to consider underflow. The minimum value
that saturates to 0 from A - B is B.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
| tcg/tcg-op-vec.c | diffblobblamehistory |