Viewing file:  pr63586.c (1.43 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-reassoc1" } */
unsigned f1 (unsigned x, unsigned z)
{
unsigned y = x + z;
y = y + x;
y = y + x;
y = y + x;
y = y + x;
y = y + x;
y = y + x;
return y;
}
/* { dg-final { scan-tree-dump-times "\\\* 7" 1 "reassoc1" } } */
unsigned f2 (unsigned x, unsigned z)
{
unsigned y = x + z;
y = y + x;
y = y + x;
y = y + x;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
return y;
}
/* { dg-final { scan-tree-dump-times "\\\* 5" 1 "reassoc1" } } */
/* { dg-final { scan-tree-dump-times "\\\* 4" 1 "reassoc1" } } */
unsigned f3 (unsigned x, unsigned z, unsigned k)
{
unsigned y = x + z;
y = y + x;
y = y + z;
y = y + z;
y = y + k;
return y;
}
/* { dg-final { scan-tree-dump-times "\\\* 2" 1 "reassoc1" } } */
/* { dg-final { scan-tree-dump-times "\\\* 3" 1 "reassoc1" } } */
unsigned f4 (unsigned x, unsigned z, unsigned k)
{
unsigned y = k + x;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
return y;
}
/* { dg-final { scan-tree-dump-times "\\\* 8" 1 "reassoc1" } } */
unsigned f5 (unsigned x, unsigned y, unsigned z)
{
return x + y + y + y + y + y \
+ y + z + z + z + z + z + z + z + z + z;
}
/* { dg-final { scan-tree-dump-times "\\\* 6" 1 "reassoc1" } } */
/* { dg-final { scan-tree-dump-times "\\\* 9" 1 "reassoc1" } } */
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