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| author |   Andre McCurdy <armccurdy@gmail.com> | 2018-05-18 15:50:40 -0700 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2018-06-28 09:22:30 +0100 |
| commit | c88304a78e528596ca481cabe273749c286c352a (patch) | |
| tree | 40ccd0f6903777befc61bba063631c7faea186ad | |
| parent | 21d015f6c9927598d64c48c925638619b25cf232 (diff) | |
| download | openembedded-core-contrib-c88304a78e528596ca481cabe273749c286c352a.tar.gz | |
arch-armv7a.inc: default to Thumb2 instruction set for armv7a and above
Although there may still be specific cases which can benefit from the
ARM instruction set, the Thumb2 instruction set is generally a better
default for armv7a class CPUs. Distros such as Debian and Fedora have
been targeting Thumb2 by default for some time.
Note that setting ARM_INSTRUCTION_SET has no effect unless
TUNE_FEATURES contains "thumb" (which is controlled by the "t" suffix
in DEFAULTTUNE, e.g. armv7vehf-neon -vs- armv7vethf-neon, etc) so out
of tree machine configs may need to update their DEFAULTTUNE to take
advantage of this change.
Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
| -rw-r--r-- | meta/conf/machine/include/arm/arch-armv7a.inc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/meta/conf/machine/include/arm/arch-armv7a.inc b/meta/conf/machine/include/arm/arch-armv7a.inc index bad1c27059..a2663d8008 100644 --- a/meta/conf/machine/include/arm/arch-armv7a.inc +++ b/meta/conf/machine/include/arm/arch-armv7a.inc @@ -1,4 +1,5 @@ DEFAULTTUNE ?= "armv7athf" +ARM_INSTRUCTION_SET ?= "thumb" TUNEVALID[armv7a] = "Enable instructions for ARMv7-a" TUNECONFLICTS[armv7a] = "armv4 armv5 armv6 armv7" |