Messages in this thread |  | | Date | Tue, 19 Sep 2000 22:45:56 +0200 | From | Andrea Arcangeli <> | Subject | Re: GCC proposal for "@" asm constraint |
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On Tue, Sep 19, 2000 at 04:16:07PM -0400, John Wehle wrote: > Umm ... "miscompilation"? As in the compiler produced the wrong code > based on the input provided?
That's not a gcc bug (gcc is doing the right thing). It's the kernel that should use the "memory" clobber in the spinlock implementation.
The sad code generated was in reality the _right_ code. I was blind not noticing the missing $ (I missed it the first time in the first testcase I tried and I kept missing it, I was probably also biased assuming the current spinlocks was safe with the commonly used compilers, I was thinking to fix only a theorical bug). I'm sorry for that (and thanks again to Richard and Jamie).
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