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/* The problem in this PR was mostly finding a suitable place to insert
the reciprocals of the function arguments. This test case tries to
test three possible ways of how this may go wrong. */
/* { dg-options "-O2 -ffast-math" } */
/* { dg-do compile } */
/* The original test case. */
double
f1 (double a, double b, double c)
{
double y0;
double y1;
if (a == 0.0)
{
y0 = -c / b;
return y0;
}
y0 = c / b;
y1 = a / b;
return y0 * y1;
}
/* Labels may end up in the middle of a block. Also bad. */
double
f2 (double a, double b, double c)
{
double y0;
double y1;
a_label:
another_label:
if (a == 0.0)
{
y0 = -c / b;
return y0;
}
y0 = c / b;
y1 = a / b;
return y0 * y1;
}
/* Uses must still be dominated by their defs. */
double
f3 (double a, double b, double c)
{
double y0;
double y1;
y0 = -c / b;
if (a == 0.0)
{
return y0;
}
y0 = c / b;
y1 = a / b;
return y0 * y1;
}
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