From a904e6d4cb14b629f5b248b8c62625f5c0ca0e6b Mon Sep 17 00:00:00 2001 From: Mike Pagano Date: Fri, 8 Jun 2018 19:48:17 -0400 Subject: Update of cpu optimization patch for gcc --- 0000_README | 2 +- ...able-additional-cpu-optimizations-for-gcc.patch | 129 ++++++++++++--------- 2 files changed, 73 insertions(+), 58 deletions(-) diff --git a/0000_README b/0000_README index 8190d0fb..023e2130 100644 --- a/0000_README +++ b/0000_README @@ -285,4 +285,4 @@ Desc: Add Gentoo Linux support config settings and defaults. Patch: 5010_enable-additional-cpu-optimizations-for-gcc.patch From: https://github.com/graysky2/kernel_gcc_patch/ -Desc: Kernel patch enables gcc >= v4.9 optimizations for additional CPUs. +Desc: Kernel patch enables gcc >= v4.13 optimizations for additional CPUs. diff --git a/5010_enable-additional-cpu-optimizations-for-gcc.patch b/5010_enable-additional-cpu-optimizations-for-gcc.patch index c68d0721..a8aa7599 100644 --- a/5010_enable-additional-cpu-optimizations-for-gcc.patch +++ b/5010_enable-additional-cpu-optimizations-for-gcc.patch @@ -1,5 +1,5 @@ WARNING -This patch works with gcc versions 4.9+ and with kernel version 3.15+ and should +This patch works with gcc versions 4.9+ and with kernel version 4.13+ and should NOT be applied when compiling on older versions of gcc due to key name changes of the march flags introduced with the version 4.9 release of gcc.[1] @@ -29,7 +29,8 @@ The expanded microarchitectures include: * Intel 3rd Gen Core i3/i5/i7 (Ivybridge) * Intel 4th Gen Core i3/i5/i7 (Haswell) * Intel 5th Gen Core i3/i5/i7 (Broadwell) -* Intel 6th Gen Core i3/i5.i7 (Skylake) +* Intel 6th Gen Core i3/i5/i7 (Skylake) +* Intel 6th Gen Core i7/i9 (Skylake X) It also offers to compile passing the 'native' option which, "selects the CPU to generate code for at compilation time by determining the processor type of @@ -43,7 +44,7 @@ changes. Note that upstream is using the deprecated 'match=atom' flags when I believe it should use the newer 'march=bonnell' flag for atom processors.[2] It is not recommended to compile on Atom-CPUs with the 'native' option.[4] The -recommendation is use to the 'atom' option instead. +recommendation is to use the 'atom' option instead. BENEFITS Small but real speed increases are measurable using a make endpoint comparing @@ -53,7 +54,7 @@ See the following experimental evidence supporting this statement: https://github.com/graysky2/kernel_gcc_patch REQUIREMENTS -linux version >=3.15 +linux version >=4.13 gcc version >=4.9 ACKNOWLEDGMENTS @@ -66,9 +67,9 @@ REFERENCES 4. https://github.com/graysky2/kernel_gcc_patch/issues/15 5. http://www.linuxforge.net/docs/linux/linux-gcc.php ---- a/arch/x86/include/asm/module.h 2017-08-02 11:41:47.442200461 -0400 -+++ b/arch/x86/include/asm/module.h 2017-08-02 12:14:21.204358744 -0400 -@@ -15,6 +15,24 @@ +--- a/arch/x86/include/asm/module.h 2018-01-28 16:20:33.000000000 -0500 ++++ b/arch/x86/include/asm/module.h 2018-03-10 06:42:38.688317317 -0500 +@@ -25,6 +25,26 @@ struct mod_arch_specific { #define MODULE_PROC_FAMILY "586MMX " #elif defined CONFIG_MCORE2 #define MODULE_PROC_FAMILY "CORE2 " @@ -90,10 +91,12 @@ REFERENCES +#define MODULE_PROC_FAMILY "BROADWELL " +#elif defined CONFIG_MSKYLAKE +#define MODULE_PROC_FAMILY "SKYLAKE " ++#elif defined CONFIG_MSKYLAKEX ++#define MODULE_PROC_FAMILY "SKYLAKEX " #elif defined CONFIG_MATOM #define MODULE_PROC_FAMILY "ATOM " #elif defined CONFIG_M686 -@@ -33,6 +51,26 @@ +@@ -43,6 +63,26 @@ struct mod_arch_specific { #define MODULE_PROC_FAMILY "K7 " #elif defined CONFIG_MK8 #define MODULE_PROC_FAMILY "K8 " @@ -120,9 +123,9 @@ REFERENCES #elif defined CONFIG_MELAN #define MODULE_PROC_FAMILY "ELAN " #elif defined CONFIG_MCRUSOE ---- a/arch/x86/Kconfig.cpu 2017-08-02 11:41:47.443200463 -0400 -+++ b/arch/x86/Kconfig.cpu 2017-08-02 12:14:37.108956741 -0400 -@@ -115,6 +115,7 @@ config MPENTIUMM +--- a/arch/x86/Kconfig.cpu 2018-01-28 16:20:33.000000000 -0500 ++++ b/arch/x86/Kconfig.cpu 2018-03-10 06:45:50.244371799 -0500 +@@ -116,6 +116,7 @@ config MPENTIUMM config MPENTIUM4 bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon" depends on X86_32 @@ -130,7 +133,7 @@ REFERENCES ---help--- Select this for Intel Pentium 4 chips. This includes the Pentium 4, Pentium D, P4-based Celeron and Xeon, and -@@ -147,9 +148,8 @@ config MPENTIUM4 +@@ -148,9 +149,8 @@ config MPENTIUM4 -Paxville -Dempsey @@ -141,7 +144,7 @@ REFERENCES depends on X86_32 ---help--- Select this for an AMD K6-family processor. Enables use of -@@ -157,7 +157,7 @@ config MK6 +@@ -158,7 +158,7 @@ config MK6 flags to GCC. config MK7 @@ -150,7 +153,7 @@ REFERENCES depends on X86_32 ---help--- Select this for an AMD Athlon K7-family processor. Enables use of -@@ -165,12 +165,83 @@ config MK7 +@@ -166,12 +166,83 @@ config MK7 flags to GCC. config MK8 @@ -235,7 +238,7 @@ REFERENCES config MCRUSOE bool "Crusoe" depends on X86_32 -@@ -252,6 +323,7 @@ config MVIAC7 +@@ -253,6 +324,7 @@ config MVIAC7 config MPSC bool "Intel P4 / older Netburst based Xeon" @@ -243,7 +246,7 @@ REFERENCES depends on X86_64 ---help--- Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey -@@ -261,8 +333,19 @@ config MPSC +@@ -262,8 +334,19 @@ config MPSC using the cpu family field in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one. @@ -264,7 +267,7 @@ REFERENCES ---help--- Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and -@@ -270,14 +353,79 @@ config MCORE2 +@@ -271,14 +354,88 @@ config MCORE2 family in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo) @@ -347,10 +350,19 @@ REFERENCES + Select this for 6th Gen Core processors in the Skylake family. + + Enables -march=skylake ++ ++config MSKYLAKEX ++ bool "Intel Skylake X" ++ select X86_P6_NOP ++ ---help--- ++ ++ Select this for 6th Gen Core processors in the Skylake X family. ++ ++ Enables -march=skylake-avx512 config GENERIC_CPU bool "Generic-x86-64" -@@ -286,6 +434,19 @@ config GENERIC_CPU +@@ -287,6 +444,19 @@ config GENERIC_CPU Generic x86-64 CPU. Run equally well on all x86-64 CPUs. @@ -359,7 +371,7 @@ REFERENCES + ---help--- + + GCC 4.2 and above support -march=native, which automatically detects -+ the optimum settings to use based on your processor. -march=native ++ the optimum settings to use based on your processor. -march=native + also detects and applies additional settings beyond -march specific + to your CPU, (eg. -msse4). Unless you have a specific reason not to + (e.g. distcc cross-compiling), you should probably be using @@ -370,26 +382,26 @@ REFERENCES endchoice config X86_GENERIC -@@ -310,7 +471,7 @@ config X86_INTERNODE_CACHE_SHIFT +@@ -311,7 +481,7 @@ config X86_INTERNODE_CACHE_SHIFT config X86_L1_CACHE_SHIFT int default "7" if MPENTIUM4 || MPSC - default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU -+ default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MZEN || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU ++ default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MZEN || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU default "4" if MELAN || M486 || MGEODEGX1 default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX -@@ -341,45 +502,46 @@ config X86_ALIGNMENT_16 +@@ -342,35 +512,36 @@ config X86_ALIGNMENT_16 config X86_INTEL_USERCOPY def_bool y - depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 -+ depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK8SSE3 || MK7 || MEFFICEON || MCORE2 || MK10 || MBARCELONA || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MNATIVE ++ depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK8SSE3 || MK7 || MEFFICEON || MCORE2 || MK10 || MBARCELONA || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MNATIVE config X86_USE_PPRO_CHECKSUM def_bool y - depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM -+ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MK10 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MATOM || MNATIVE ++ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MK10 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MATOM || MNATIVE config X86_USE_3DNOW def_bool y @@ -412,7 +424,7 @@ REFERENCES - depends on (MCORE2 || MPENTIUM4 || MPSC) + default n + bool "Support for P6_NOPs on Intel chips" -+ depends on (MCORE2 || MPENTIUM4 || MPSC || MATOM || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MNATIVE) ++ depends on (MCORE2 || MPENTIUM4 || MPSC || MATOM || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MNATIVE) + ---help--- + P6_NOPs are a relatively minor optimization that require a family >= + 6 processor, except that it is broken on certain VIA chips. @@ -429,25 +441,22 @@ REFERENCES config X86_TSC def_bool y - depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) || X86_64 -+ depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MNATIVE || MATOM) || X86_64 ++ depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MNATIVE || MATOM) || X86_64 config X86_CMPXCHG64 def_bool y -- depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM -+ depends on X86_PAE || X86_64 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM || MNATIVE - - # this should be set for all -march=.. options where the compiler +@@ -380,7 +551,7 @@ config X86_CMPXCHG64 # generates cmov. config X86_CMOV def_bool y - depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) -+ depends on (MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MZEN || MJAGUAR || MK7 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MNATIVE || MATOM || MGEODE_LX) ++ depends on (MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MZEN || MJAGUAR || MK7 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MNATIVE || MATOM || MGEODE_LX) config X86_MINIMUM_CPU_FAMILY int ---- a/arch/x86/Makefile 2017-08-02 11:41:47.443200463 -0400 -+++ b/arch/x86/Makefile 2017-08-02 12:14:46.373727353 -0400 -@@ -121,13 +121,40 @@ else +--- a/arch/x86/Makefile 2018-01-28 16:20:33.000000000 -0500 ++++ b/arch/x86/Makefile 2018-03-10 06:47:00.284240139 -0500 +@@ -124,13 +124,42 @@ else KBUILD_CFLAGS += $(call cc-option,-mskip-rax-setup) # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu) @@ -486,45 +495,51 @@ REFERENCES + $(call cc-option,-march=broadwell,$(call cc-option,-mtune=broadwell)) + cflags-$(CONFIG_MSKYLAKE) += \ + $(call cc-option,-march=skylake,$(call cc-option,-mtune=skylake)) ++ cflags-$(CONFIG_MSKYLAKEX) += \ ++ $(call cc-option,-march=skylake-avx512,$(call cc-option,-mtune=skylake-avx512)) + cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell) \ + $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic)) cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic) KBUILD_CFLAGS += $(cflags-y) ---- a/arch/x86/Makefile_32.cpu 2017-08-02 11:41:47.444200464 -0400 -+++ b/arch/x86/Makefile_32.cpu 2017-08-02 12:23:41.636760695 -0400 -@@ -22,7 +22,18 @@ cflags-$(CONFIG_MK6) += -march=k6 +--- a/arch/x86/Makefile_32.cpu 2018-01-28 16:20:33.000000000 -0500 ++++ b/arch/x86/Makefile_32.cpu 2018-03-10 06:47:46.025992644 -0500 +@@ -23,7 +23,18 @@ cflags-$(CONFIG_MK6) += -march=k6 # Please note, that patches that add -march=athlon-xp and friends are pointless. # They make zero difference whatsosever to performance at this time. cflags-$(CONFIG_MK7) += -march=athlon -+cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native) ++cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native) cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,-march=athlon) -+cflags-$(CONFIG_MK8SSE3) += $(call cc-option,-march=k8-sse3,-march=athlon) -+cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10,-march=athlon) -+cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona,-march=athlon) -+cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1,-march=athlon) -+cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2,-march=athlon) -+cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1,-march=athlon) -+cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2,-march=athlon) -+cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3,-march=athlon) -+cflags-$(CONFIG_MEXCAVATOR) += $(call cc-option,-march=bdver4,-march=athlon) -+cflags-$(CONFIG_MZEN) += $(call cc-option,-march=znver1,-march=athlon) ++cflags-$(CONFIG_MK8SSE3) += $(call cc-option,-march=k8-sse3,-march=athlon) ++cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10,-march=athlon) ++cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona,-march=athlon) ++cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1,-march=athlon) ++cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2,-march=athlon) ++cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1,-march=athlon) ++cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2,-march=athlon) ++cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3,-march=athlon) ++cflags-$(CONFIG_MEXCAVATOR) += $(call cc-option,-march=bdver4,-march=athlon) ++cflags-$(CONFIG_MZEN) += $(call cc-option,-march=znver1,-march=athlon) cflags-$(CONFIG_MCRUSOE) += -march=i686 -falign-functions=0 -falign-jumps=0 -falign-loops=0 cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,pentium3) -falign-functions=0 -falign-jumps=0 -falign-loops=0 cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586) -@@ -31,9 +42,12 @@ cflags-$(CONFIG_MCYRIXIII) += $(call cc- +@@ -32,8 +43,17 @@ cflags-$(CONFIG_MCYRIXIII) += $(call cc- cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686) cflags-$(CONFIG_MVIAC7) += -march=i686 cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2) -cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom,$(call cc-option,-march=core2,-march=i686)) \ - $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic)) -- -+cflags-$(CONFIG_MNEHALEM) += -march=i686 $(call tune,nehalem) -+cflags-$(CONFIG_MWESTMERE) += -march=i686 $(call tune,westmere) -+cflags-$(CONFIG_MSILVERMONT) += -march=i686 $(call tune,silvermont) -+cflags-$(CONFIG_MSANDYBRIDGE) += -march=i686 $(call tune,sandybridge) -+cflags-$(CONFIG_MIVYBRIDGE) += -march=i686 $(call tune,ivybridge) -+cflags-$(CONFIG_MHASWELL) += -march=i686 $(call tune,haswell) ++cflags-$(CONFIG_MNEHALEM) += -march=i686 $(call tune,nehalem) ++cflags-$(CONFIG_MWESTMERE) += -march=i686 $(call tune,westmere) ++cflags-$(CONFIG_MSILVERMONT) += -march=i686 $(call tune,silvermont) ++cflags-$(CONFIG_MSANDYBRIDGE) += -march=i686 $(call tune,sandybridge) ++cflags-$(CONFIG_MIVYBRIDGE) += -march=i686 $(call tune,ivybridge) ++cflags-$(CONFIG_MHASWELL) += -march=i686 $(call tune,haswell) ++cflags-$(CONFIG_MBROADWELL) += -march=i686 $(call tune,broadwell) ++cflags-$(CONFIG_MSKYLAKE) += -march=i686 $(call tune,skylake) ++cflags-$(CONFIG_MSKYLAKEX) += -march=i686 $(call tune,skylake-avx512) ++cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell,$(call cc-option,-march=core2,-march=i686)) \ ++ $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic)) + # AMD Elan support cflags-$(CONFIG_MELAN) += -march=i486 - 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