| commit | ff26d287bddc189fd5a084cc96078da1257b0826 | |
| author | Richard Henderson <richard.henderson@linaro.org> | |
| Mon, 14 Dec 2020 22:13:53 +0000 (14 16:13 -0600) | ||
| committer | Cornelia Huck <cohuck@redhat.com> | |
| Mon, 21 Dec 2020 17:11:33 +0000 (21 18:11 +0100) | ||
| tree | b3933690ae362e092a809e2aa234002e1125818a | treesnapshot (tar.gz zip) |
| parent | 5b723a5d8df44b69b8ba350e643059c8fd889315 | commitdiff |
target/s390x: Improve cc computation for ADD LOGICAL
The resulting cc is only dependent on the result and the
carry-out. So save those things rather than the inputs.
Carry-out for 64-bit inputs is had via tcg_gen_add2_i64 directly
into cc_src. Carry-out for 32-bit inputs is had via extraction
from a normal 64-bit add (with zero-extended inputs).
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201214221356.68039-2-richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
The resulting cc is only dependent on the result and the
carry-out. So save those things rather than the inputs.
Carry-out for 64-bit inputs is had via tcg_gen_add2_i64 directly
into cc_src. Carry-out for 32-bit inputs is had via extraction
from a normal 64-bit add (with zero-extended inputs).
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201214221356.68039-2-richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>