[Bug 3533] [IcedTea8] HotSpot generates code with unaligned stack, crashes on SSE operations

[bugzilla-daemon at icedtea.classpath.org]

https://icedtea.classpath.org/bugzilla/show_bug.cgi?id=3533

--- Comment #21 from Maciej S. Szmigiero <mail at maciej.szmigiero.name> ---
I've tried "-mstackrealign" but it didn't add the required
stack pointer realignment prologue to every entry function.

>From the Gentoo bug:
> That's why an other solution is necessary in form of
> "-mincoming-stack-boundary=2" {C,CXX}FLAG for icedtea (not
> "-mstackrealign" since it does not work in our case as this flag seems
> to be for leaf - and not intermediate - functions).
> It is a big hammer but it allows building of a working icedtea (with
> glibc compiled by gcc-7.3.0) without any patching of the HotSpot code.

Gentoo now adds "-mincoming-stack-boundary=2" when building IcedTea for
32-bit x86 target.

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