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annotate gcc/testsuite/gcc.dg/tree-ssa/ldist-pr45948.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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111
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1 /* { dg-do compile } */
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2 /* { dg-options "-O2 -ftree-loop-distribution -ftree-loop-distribute-patterns -fdump-tree-ldist-details -fdump-tree-optimized" } */
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3
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4 extern void bar(int);
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5
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6 void
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7 foo (unsigned i, unsigned n)
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8 {
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9 int a[30];
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10 int b[30];
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11 if (n == 0)
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12 return;
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13 for (i=0; i < n; i++)
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14 a[i] = b[i] = 0;
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15
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16 while (1)
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17 if (b[0])
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18 bar (a[i - 1]);
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19 }
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20
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21 /* We should apply loop distribution and generate 1 memset (0). PRE optimizes
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22 away a[] completely. */
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23
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24 /* { dg-final { scan-tree-dump "distributed: split to 0 loops and 1 library calls" "ldist" } } */
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25 /* { dg-final { scan-tree-dump-times "generated memset zero" 1 "ldist" } } */
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26 /* { dg-final { scan-tree-dump-times "int a" 0 "optimized" } } */