[Bug rtl-optimization/79149] bad optimization on MIPS and ARM leading to excessive stack usage in some cases

[arnd at linaro dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79149

--- Comment #10 from Arnd Bergmann <arnd at linaro dot org> ---
(In reply to Arnd Bergmann from comment #9)

> "-fsched-pressure" on mips64 helps a lot
> ...
> On arm and aarch64, "-fsched-pressure" has no effect

I realized later that on arm and aarch64, -fsched-pressure is enabled by
default. Disabling it on these two makes it as bad as mips64, which has it
disabled by default.