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annotate gcc/testsuite/gcc.dg/tree-ssa/pr87126.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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131
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1 /* { dg-do compile } */
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2 /* { dg-options "-O2 -fdump-tree-fre1" } */
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3
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4 int a, *b;
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5
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6 void f ()
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7 {
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8 int d = 0, e = d;
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9 while (a++)
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10 ;
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11 if (e)
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12 goto L2;
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13 L1:
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14 d = e;
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15 b = &d;
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16 L2:
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17 if (d)
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18 goto L1;
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19 }
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20
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21 /* The load of d could be eliminated if we'd value-number the
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22 irreducible region in RPO of the reducible result. Likewise
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23 a redundant store could be removed. */
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24 /* { dg-final { scan-tree-dump-times "d = 0;" 1 "fre1" { xfail *-*-* } } } */
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25 /* { dg-final { scan-tree-dump-not " = d;" "fre1" { xfail *-*-* } } } */