From 8d2f51e9b8d5b27fc61d148a6dd5f6ef5715d6e6 Mon Sep 17 00:00:00 2001 From: Andre McCurdy Date: Thu, 26 Apr 2018 10:57:27 -0700 Subject: tune-corei7.inc: update TUNE_CCARGS -march CPU type corei7 -> nehalem The gcc "corei7" CPU type was last documented in gcc 4.8.x and has been undocumented from gcc 4.9.x onwards: https://gcc.gnu.org/onlinedocs/gcc-4.8.5/gcc/i386-and-x86-64-Options.html https://gcc.gnu.org/onlinedocs/gcc-4.9.4/gcc/i386-and-x86-64-Options.html Although it still seems to be accepted by gcc 7.x, it's likely to be deprecated and removed at some point. To preempt that, switch the corei7 TUNE_CCARGS -march CPU type to "nehalem", which is the closest replacement (and matches the CPU type already being passed to qemu). Since the tune-corei7.inc include file is intended to cover a range of CPUs from Nehalem onwards, switch the TUNE_CCARGS -mtune option from "corei7" to "generic", which instructs gcc to produce code optimized for the most common IA32/AMD64/EM64T processors. Signed-off-by: Andre McCurdy Signed-off-by: Ross Burton --- meta/conf/machine/include/tune-corei7.inc | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/meta/conf/machine/include/tune-corei7.inc b/meta/conf/machine/include/tune-corei7.inc index 6edfb680e2..9ce731c27a 100644 --- a/meta/conf/machine/include/tune-corei7.inc +++ b/meta/conf/machine/include/tune-corei7.inc @@ -1,7 +1,7 @@ -# Settings for the GCC(1) cpu-type "corei7": +# Settings for the GCC(1) cpu-type "nehalem": # -# Intel Core i7 CPU with 64-bit extensions, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 -# and SSE4.2 instruction set support. +# Intel Nehalem CPU with 64-bit extensions, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, +# SSE4.2 and POPCNT instruction set support. # # This tune is recommended for Intel Nehalem and Silvermont (e.g. Bay Trail) CPUs # (and beyond). @@ -11,10 +11,9 @@ DEFAULTTUNE ?= "corei7-64" # Pull in the previous tune in to pull in PACKAGE_EXTRA_ARCHS require conf/machine/include/tune-core2.inc - # Extra tune features TUNEVALID[corei7] = "Enable corei7 specific processor optimizations" -TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'corei7', ' -march=corei7 -mtune=corei7 -mfpmath=sse -msse4.2', '', d)}" +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'corei7', ' -march=nehalem -mtune=generic -mfpmath=sse -msse4.2', '', d)}" # Extra tune selections AVAILTUNES += "corei7-32" -- cgit 1.2.3-korg