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/* { dg-do compile } */
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/* { dg-options "-O2 -ftree-vectorize" } */
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typedef unsigned short ush;
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extern ush prev[];
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void fill_window ()
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{
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register unsigned n, m;
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for (n = 0; n < 32768; n++)
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{
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m = prev[n];
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prev[n] = (ush) (m >= 0x8000 ? m - 0x8000 : 0);
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}
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}
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