diff options
Diffstat (limited to 'gcc/tree-complex.c')
| -rw-r--r-- | gcc/tree-complex.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/tree-complex.c b/gcc/tree-complex.c index f691805..199f1dcf 100644 --- a/gcc/tree-complex.c +++ b/gcc/tree-complex.c @@ -1065,7 +1065,9 @@ expand_complex_multiplication (gimple_stmt_iterator *gsi, tree inner_type, update_complex_assignment (gsi, rr, ri); } -/* Expand complex division to scalars, straightforward algorithm. +/* Keep this algorithm in sync with fold-const.c:const_binop(). + + Expand complex division to scalars, straightforward algorithm. a / b = ((ar*br + ai*bi)/t) + i((ai*br - ar*bi)/t) t = br*br + bi*bi */ @@ -1094,7 +1096,9 @@ expand_complex_div_straight (gimple_stmt_iterator *gsi, tree inner_type, update_complex_assignment (gsi, rr, ri); } -/* Expand complex division to scalars, modified algorithm to minimize +/* Keep this algorithm in sync with fold-const.c:const_binop(). + + Expand complex division to scalars, modified algorithm to minimize overflow with wide input ranges. */ static void |