diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/pr23109.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr23109.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr23109.c b/gcc/testsuite/gcc.dg/tree-ssa/pr23109.c new file mode 100644 index 000000000..39add724e --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr23109.c @@ -0,0 +1,36 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -funsafe-math-optimizations -ftrapping-math -fdump-tree-recip -fdump-tree-lim" } */ +/* { dg-warning "-fassociative-math disabled" "" { target *-*-* } 1 } */ + +double F[2] = { 0., 0. }, e = 0.; + +int main() +{ + int i; + double E, W, P, d; + + /* make sure the program crashes on FP exception */ + unsigned short int Mask; + + W = 1.; + d = 2.*e; + E = 1. - d; + + for( i=0; i < 2; i++ ) + if( d > 0.01 ) + { + P = ( W < E ) ? (W - E)/d : (E - W)/d; + F[i] += P; + } + + return 0; +} + +/* LIM only performs the transformation in the no-trapping-math case. In + the future we will do it for trapping-math as well in recip, check that + this is not wrongly optimized. */ +/* { dg-final { scan-tree-dump-not "reciptmp" "lim1" } } */ +/* { dg-final { scan-tree-dump-not "reciptmp" "recip" } } */ +/* { dg-final { cleanup-tree-dump "recip" } } */ +/* { dg-final { cleanup-tree-dump "lim\[1-2\]" } } */ + |