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/* { dg-do compile } */
/* We don't (and don't want to) perform this optimisation on soft-float
targets, where each addition is a library call. */
/* { dg-require-effective-target hard_float } */
/* { dg-options "-O2 -funroll-loops --fast-math -fvariable-expansion-in-unroller -fdump-rtl-loop2_unroll" } */
extern void abort (void);
float array[10] = { 1,2,3,4,5,6,7,8,9,10 };
int foo (int n)
{
unsigned i;
float accum = 1.0;
for (i = 0; i < n; i++)
accum += array[i];
return accum;
}
int main (void)
{
return foo (10);
}
/* { dg-final { scan-rtl-dump "Expanding Accumulator" "loop2_unroll" } } */
/* { dg-final { cleanup-rtl-dump "loop*" } } */
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