Round and clip with one step, mc_8tap_regular_h_c

Relative speed-ups compared with gcc-9.2.0:

                                  Before     After
mc_8tap_regular_w2_h_16bpc_c:      276.6     219.9
mc_8tap_regular_w4_h_16bpc_c:      489.5     374.5
mc_8tap_regular_w8_h_16bpc_c:      897.7     686.8
mc_8tap_regular_w16_h_16bpc_c:    2573.7    2314.2
mc_8tap_regular_w32_h_16bpc_c:    7647.3    7012.4
mc_8tap_regular_w64_h_16bpc_c:   28163.8   25057.4
mc_8tap_regular_w128_h_16bpc_c:  77678.4   73570.0
33 jobs for master in 3 minutes and 59 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Style
passed #520486
amd64 docker
style-check

00:00:06

passed #520487
amd64 docker
x86inc-check

00:00:05

 
  Build
passed #520498
amd64 docker
build-android-aarch64

00:00:10

passed #520497
amd64 docker
build-android-armv7

00:00:19

passed #520488
amd64 avx2 docker
build-debian

00:00:24

passed #520499
aarch64 docker
build-debian-aarch64

00:00:16

passed #520500
aarch64 docker
build-debian-aarch64-clang-5

00:00:13

passed #520503
armv7 docker
build-debian-armv7

00:00:42

passed #520504
armv7 docker
build-debian-armv7-clang-5

00:00:38

passed #520491
amd64 docker
build-debian-examples

00:00:27

passed #520506
ppc64le docker
build-debian-ppc64le

00:01:33

passed #520489
amd64 docker
build-debian-static

00:00:32

passed #520502
aarch64 docker
build-debian-werror

00:00:18

passed #520490
amd64 docker
build-debian32

00:00:24

passed #520501
catalina amd64
build-macos

00:00:35

passed #520505
amd64 docker
build-ubuntu-snap

00:00:44

passed #520495
amd64 docker
build-win-arm32

00:00:10

passed #520496
amd64 docker
build-win-arm64

00:00:12

passed #520492
amd64 docker
build-win32

00:00:31

passed #520493
amd64 docker
build-win32-unaligned-stack

00:00:37

passed #520494
amd64 docker
build-win64

00:00:44

 
  Test
passed #520507
amd64 docker
test-debian

00:00:43

97.8591%
passed #520516
aarch64 docker
test-debian-aarch64

00:00:23

passed #520518
armv7 docker
test-debian-armv7-clang-5

00:00:50

passed #520511
amd64 docker
test-debian-asan

00:01:22

passed #520508
avx2 amd64 docker
test-debian-asm

00:00:48

passed #520512
amd64 docker
test-debian-msan

00:00:54

passed #520517
ppc64le docker
test-debian-ppc64le

00:02:17

passed #520514
amd64 docker
test-debian-tsan

00:01:36

passed #520513
amd64 docker
test-debian-ubsan

00:00:53

passed #520510
amd64 avx2 docker
test-debian-unaligned-stack

00:00:31

passed #520509
avx2 amd64 docker
test-debian32-asm

00:01:08

passed #520515
amd64 avx2 docker
test-win64

00:00:54