comp flags
Intel Core i7-8086K testing with a ASUS PRIME Z370-A (1802 BIOS) and Intel UHD 630 3GB on Ubuntu 18.10 via the Phoronix Test Suite.


-O3: 

	Processor: Intel Core i7-8086K @ 5.00GHz (6 Cores / 12 Threads), Motherboard: ASUS PRIME Z370-A (1802 BIOS), Chipset: Intel 8th Gen Core, Memory: 8192MB, Disk: 118GB INTEL SSDPEK1W120GA, Graphics: Intel UHD 630 3GB (1200MHz), Audio: Realtek ALC1220, Monitor: DELL P2415Q, Network: Intel I219-V

	OS: Ubuntu 18.10, Kernel: 4.18.0-16-generic (x86_64), Desktop: GNOME Shell 3.30.2, Display Server: X Server 1.20.1, Display Driver: modesetting 1.20.1, OpenGL: 4.5 Mesa 18.2.2, Vulkan: 1.1.80, Compiler: GCC 8.2.0, File-System: ext4, Screen Resolution: 3840x2160

-O3 -march=native: 

	Processor: Intel Core i7-8086K @ 5.00GHz (6 Cores / 12 Threads), Motherboard: ASUS PRIME Z370-A (1802 BIOS), Chipset: Intel 8th Gen Core, Memory: 8192MB, Disk: 118GB INTEL SSDPEK1W120GA, Graphics: Intel UHD 630 3GB (1200MHz), Audio: Realtek ALC1220, Monitor: DELL P2415Q, Network: Intel I219-V

	OS: Ubuntu 18.10, Kernel: 4.18.0-16-generic (x86_64), Desktop: GNOME Shell 3.30.2, Display Server: X Server 1.20.1, Display Driver: modesetting 1.20.1, OpenGL: 4.5 Mesa 18.2.2, Vulkan: 1.1.80, Compiler: GCC 8.2.0, File-System: ext4, Screen Resolution: 3840x2160


MKL-DNN 2019-04-16
Harness: IP Batch 1D - Data Type: u8s8u8s32
ms < Lower Is Better
-O3 ............... 5.75 |====================================
-O3 -march=native . 8.54 |=====================================================


MKL-DNN 2019-04-16
Harness: IP Batch All - Data Type: u8s8u8s32
ms < Lower Is Better
-O3 ............... 109 |====================================================
-O3 -march=native . 113 |======================================================


MKL-DNN 2019-04-16
Harness: Deconvolution Batch deconv_1d - Data Type: u8s8u8s32
ms < Lower Is Better
-O3 ............... 6.84 |=====================================================
-O3 -march=native . 6.82 |=====================================================


MKL-DNN 2019-04-16
Harness: Deconvolution Batch deconv_3d - Data Type: u8s8u8s32
ms < Lower Is Better
-O3 ............... 8.58 |===================================================
-O3 -march=native . 8.85 |=====================================================


MKL-DNN 2019-04-16
Harness: Deconvolution Batch deconv_all - Data Type: u8s8u8s32
ms < Lower Is Better
-O3 . 3853.98 |================================================================