From c08f76ba0654e43074b6b964f728765918dbfb09 Mon Sep 17 00:00:00 2001 From: Carlos Alberto Lopez Perez Date: Mon, 15 Jan 2018 21:02:55 +0100 Subject: tune-i686: Add new tune for better support of 686-class CPUs. There isn't currently any tune available for i686 x86 optimizations. The tune for i586 doesn't enable i686 specific optimizations, and the one for core2 enables things that won't work on a i686 CPU (like SSE3). Make the tune for core2 inherits from this one and move there the setting of X86ARCH32. Signed-off-by: Carlos Alberto Lopez Perez Signed-off-by: Richard Purdie --- meta/conf/machine/include/tune-core2.inc | 7 ++----- meta/conf/machine/include/tune-i686.inc | 27 +++++++++++++++++++++++++++ 2 files changed, 29 insertions(+), 5 deletions(-) create mode 100644 meta/conf/machine/include/tune-i686.inc diff --git a/meta/conf/machine/include/tune-core2.inc b/meta/conf/machine/include/tune-core2.inc index f4ba43fbfd..6a03466650 100644 --- a/meta/conf/machine/include/tune-core2.inc +++ b/meta/conf/machine/include/tune-core2.inc @@ -8,11 +8,8 @@ # DEFAULTTUNE ?= "core2-32" -# Set x86 target arch to i686, so that glibc enables SSE optimised memcpy, etc. -X86ARCH32 ?= "i686" - # Include the previous tune to pull in PACKAGE_EXTRA_ARCHS -require conf/machine/include/tune-i586.inc +require conf/machine/include/tune-i686.inc # Extra tune features TUNEVALID[core2] = "Enable core2 specific processor optimizations" @@ -23,7 +20,7 @@ AVAILTUNES += "core2-32" TUNE_FEATURES_tune-core2-32 = "${TUNE_FEATURES_tune-x86} core2" BASE_LIB_tune-core2-32 = "lib" TUNE_PKGARCH_tune-core2-32 = "core2-32" -PACKAGE_EXTRA_ARCHS_tune-core2-32 = "${PACKAGE_EXTRA_ARCHS_tune-i586} core2-32" +PACKAGE_EXTRA_ARCHS_tune-core2-32 = "${PACKAGE_EXTRA_ARCHS_tune-i686} core2-32" AVAILTUNES += "core2-64" TUNE_FEATURES_tune-core2-64 = "${TUNE_FEATURES_tune-x86-64} core2" diff --git a/meta/conf/machine/include/tune-i686.inc b/meta/conf/machine/include/tune-i686.inc new file mode 100644 index 0000000000..bdb4799209 --- /dev/null +++ b/meta/conf/machine/include/tune-i686.inc @@ -0,0 +1,27 @@ +# +# The i686 CPU family was introduced with the Intel Pentium Pro in 1995. +# It has as required feature flags: fpu tsc cx8 cmov. +# +# It is the minimum CPU required by the Debian i386 port. +# https://lists.debian.org/debian-devel-announce/2016/05/msg00001.html +# +# + +DEFAULTTUNE ?= "i686" + +# Set x86 target arch to i686, so that glibc enables SSE optimised memcpy, etc. +X86ARCH32 ?= "i686" + +# Include the previous tune to pull in PACKAGE_EXTRA_ARCHS +require conf/machine/include/tune-i586.inc + +# Extra tune features +TUNEVALID[i686] = "Enable i686 specific processor optimizations" +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'i686', ' -march=i686', '', d)}" + +# Extra tune selections +AVAILTUNES += "i686" +TUNE_FEATURES_tune-i686 = "${TUNE_FEATURES_tune-x86} i686" +BASE_LIB_tune-i686 = "lib" +TUNE_PKGARCH_tune-i686 = "i686" +PACKAGE_EXTRA_ARCHS_tune-i686 = "${PACKAGE_EXTRA_ARCHS_tune-i586} i686" -- cgit 1.2.3-korg