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/* { dg-do compile } */
/* { dg-options "-march=celledp -O1" } */
/* { dg-final { scan-assembler "dfceq" } } */
/* GCC previously transformed an "a <= b" test into "! (a > b)" when
compiling with -march=celledp, so that the dfcgt instruction can be
used to implement the comparison.
However, this transformation violates the IEEE-754 standard in the
presence of NaN values. If either a or b is a NaN, a <= b should
evaluate to false according to IEEE rules. However, after the
transformation, a > b as implemented by dfcgt itself returns false,
so the transformed test returns true.
Note that the equivalent transformation is valid for single-
precision floating-point values on the Cell SPU, because the format
does not have NaNs. It is invalid for double-precision, even on
Cell, however. */
int test (double a, double b) __attribute__ ((noinline));
int test (double a, double b)
{
return a <= b;
}
int main (void)
{
double x = 0.0;
double y = 0.0/0.0;
return test (x, y);
}
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