Change default CFLAGS for i486 target #21
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-O2 -fno-tree-ch generates better results than -Os when keeping binary size small, especially on architectures with severe penalties for non-aligned load/store, and/or architectures with rather small L2/L3 caches.
Also Glibc might be miscompiled by -Os switch, so I suggest using -O2 instead of -Os on selected packages.
See https://github.com/openwrt/openwrt/commit/bf604f35035ae49a3db8a1e1ff67f512a0de86bd
-mtune=bonnell is suboptimal for any CPU other than first generation Intel Atom processors, and will increase binary size.
AOSC-Dev/aosc-os-abbs#7406
With this patch GCC should generate very promising results for Intel P6 variants / AMD K7 Athlons .
Fixes a typo in sparc64 too.