40 lines
683 B
C
40 lines
683 B
C
/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-pre-stats" } */
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struct Loc {
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int x[3];
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};
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void bar (struct Loc *);
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int foo (int i, int j, int k, int b)
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{
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struct Loc IND;
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int res;
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if (b)
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{
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IND.x[0] = i;
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IND.x[1] = j;
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IND.x[2] = k-1;
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}
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else
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{
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IND.x[0] = i;
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IND.x[1] = j;
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IND.x[2] = k;
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}
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/* This should be optimized to i + j + {k, k + 1}. */
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res = IND.x[0] + IND.x[1] + IND.x[2];
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/* This is just to prevent SRA. */
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bar (&IND);
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return res;
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}
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/* All three loads should be eliminated. */
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/* { dg-final { scan-tree-dump "Eliminated: 3" "pre" } } */
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/* { dg-final { cleanup-tree-dump "pre" } } */
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