Public bug reported:
Binary package hint: gcc-4.3
For the armel Ubuntu port, since it is optimised for ARMv7, it would be
good to have gcc automatically generating code equivalent to the flags
below so that all the applications would benefit, unrelated to whether
CFLAGS was set or not:
-march=armv5t -mtune=cortex-a8 -mfpu=vfp -mfloat-abi=softfp
The above are compliant with the ARM EABI standard and also allow the
code to run on ARMv5 hardware with VFP (e.g. ARM926). The generated code
would be tuned for Cortex-A8 (ARMv7 architecture). The -mfloat-
abi=softfp is required by the ARM EABI so that objects compiled for soft
floating point could be linked (statically or dynamically) with hard
floating point (VFP) objects.
The current patches from Debian applied to gcc change the default target
to ARMv4t (arm9tdmi) in the gcc/config/arm/linux-eabi.h file (used,
generally, by gcc/config/arm/arm.c to define the default architecture
target and CPU tuning).
Thanks.
** Affects: gcc-4.3 (Ubuntu)
Importance: Undecided
Status: New
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armel gcc default optimisations
https://bugs.launchpad.net/bugs/303232
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