gcc/testsuite/gcc.dg/pr107967-2.c

   1 /* PR tree-optimization/107967 */
   2 /* { dg-do compile { target float64 } } */
   3 /* { dg-options "-O2 -fno-rounding-math -fno-trapping-math -fdump-tree-optimized" } */
   4 /* { dg-add-options float64 } */
   5 /* { dg-final { scan-tree-dump-times "return\[ \t]\*-?Inf;" 3 "optimized" } } */
   6
   7 _Float64
   8 foo (void)
   9 {
  10   const _Float64 huge = 1.0e+300f64;
  11   return huge * huge;
  12 }
  13
  14 _Float64
  15 bar (void)
  16 {
  17   const _Float64 huge = 1.0e+300f64;
  18   return huge * -huge;
  19 }
  20
  21 _Float64
  22 baz (void)
  23 {
  24   const _Float64 a = 0x1.fffffffffffffp+1023f64;
  25   const _Float64 b = 0x1.fffffffffffffp+970f64;
  26   return a + b;
  27 }
  28
  29 _Float64
  30 qux (void)
  31 {
  32   const _Float64 a = 0x1.fffffffffffffp+1023f64;
  33   const _Float64 b = 0x1.fffffffffffffp+969f64;
  34   return a + b;
  35 }