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    SubjectRe: [patch 00/2] improve .text size on gcc 4.0 and newer compilers

    * Krzysztof Halasa <khc@pm.waw.pl> wrote:

    > Ingo Molnar <mingo@elte.hu> writes:
    >
    > >> gcc version 4.0.2 20051109 (Red Hat 4.0.2-6)
    >
    > > another thing: i wanted to decrease the size of -Os
    > > (CONFIG_CC_OPTIMIZE_FOR_SIZE) kernels, which e.g. Fedora uses too (to
    > > keep the icache footprint down).
    >
    > Remember the above gcc miscompiles the x86-32 kernel with -Os:
    >
    > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=173764

    i'm not sure what the point is. There was no sudden rush of -Os related
    bugs when Fedora switched to it for the kernel, and the 35% code-size
    savings were certainly worth it in terms of icache footprint. Yes, -Os
    is a major change for how the compiler works, and the kernel is a major
    piece of software.

    Ingo
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