Mercurial > hg > CbC > CbC_gcc

annotate gcc/testsuite/c-c++-common/rotate-9.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 84e7813d76e9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* PR tree-optimization/86401 */
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2 /* { dg-do compile } */
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3 /* { dg-options "-O2 -fno-ipa-icf -fdump-tree-optimized" } */
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4 /* { dg-final { scan-tree-dump-times "r\[<>]\[<>]" 2 "optimized" } } */
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5
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6 unsigned int
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7 f1 (unsigned int x, unsigned int s)
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8 {
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9 unsigned int t = s % (__CHAR_BIT__ * __SIZEOF_INT__);
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10 return (x << t) | (x >> (((__CHAR_BIT__ * __SIZEOF_INT__) - t) % (__CHAR_BIT__ * __SIZEOF_INT__)));
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11 }
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12
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13 unsigned int
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14 f2 (unsigned int x, unsigned int s)
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15 {
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16 int n = __CHAR_BIT__ * __SIZEOF_INT__;
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17 unsigned int t = s % n;
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18 return (x << t) | (x >> ((n - t) % n));
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19 }