GCC 4.6.x miscompiling arm-linux?

On Tue, Sep 11, 2012 at 09:27:53AM +0200, David Jander wrote:

Hi Matt,

quoted

        @ Function supports interworking.
        @ args = 0, pretend = 0, frame = 0
        @ frame_needed = 0, uses_anonymous_args = 0
        @ link register save eliminated.
        cmp     r0, #9
        mov     r3, #0
        str     r3, [r1, #0]
        mov     r0, #0
        strgt   r3, [r1, #4]
        bx      lr
        .size   flexcan_chip_start, .-flexcan_chip_start
        .ident  "GCC: (GNU) 4.3.3"
        .section        .note.GNU-stack,"",%progbits

I think this looks correct. Perhaps you could try the angstrom arm5te
toolchain and see if it's a toolchain issue?

Yes, this looks a lot better, and is exactly what I get when I compile this
code with CodeSourcery GCC-4.4.1

I have tries building gcc-4.6.3 also with OSELAS/PTXdist, and it gives the
same (wrong) result as with gcc-4.6.2

AFAIK our OSELAS/PTXdist Toolchains use Linaro patches, this would
explain why both have the same result.

Sascha

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