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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [tree-ssa/] [ssa-dse-5.c] - Blame information for rev 298

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1 298 jeremybenn
/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-optimized" } */
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int x;
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int
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f1 (int i, int j, int k)
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{
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  int *p = k ? &i : &j;
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  i = 3;
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  *p = 5;
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  x = j;
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}
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/* The assignment "i = 3" is partialy dead.  Our DSE pass doesn't handle
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   detection of partially dead assignments.
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   There's two outputs which would indicate that the optimization was
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   performed.
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   If we used block copying to detect and eliminate the partially dead
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   store, then we should see an assignment "i = 5" somewhere in the
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   dump file.
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   Another approach would be to redirect the path from the true arm
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   of the first conditional so that it reaches the statement *p = 5
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   rather than i = 3.  */
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/* { dg-final { scan-tree-dump-times "i = 5" 1 "optimized" { xfail *-*-* }} } */
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/* { dg-final { scan-tree-dump-times "<L.*>:;\[\n\t \]*\\*p = 5" 1 "optimized" { xfail *-*-*}} } */
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/* { dg-final { cleanup-tree-dump "optimized" } } */
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