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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [pr30957-1.c] - Rev 298
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/* { dg-do run { xfail *-*-* } } */ /* We don't (and don't want to) perform this optimisation on soft-float targets, where each addition is a library call. This test requires -fassociative-math for enabling the variable-expansion as well as -fsigned-zeros for honoring the sign of zero; but they can not co-exist; also under -funsafe-math-optimizations, so we expect it to fail. */ /* { dg-require-effective-target hard_float } */ /* { dg-options "-O2 -funroll-loops -funsafe-math-optimizations -fvariable-expansion-in-unroller -fdump-rtl-loop2_unroll" } */ extern void abort (void); extern void exit (int); float __attribute__((noinline)) foo (float d, int n) { unsigned i; float accum = d; for (i = 0; i < n; i++) accum += d; return accum; } int main () { if (__builtin_copysignf (1.0, foo (0.0 / -5.0, 10)) != -1.0) abort (); exit (0); } /* { dg-final { scan-rtl-dump "Expanding Accumulator" "loop2_unroll" } } */ /* { dg-final { cleanup-rtl-dump "loop*" } } */