Add and fix some comments.

[libfirm] / ir / lower / lower_dw.c

diff --git a/ir/lower/lower_dw.c b/ir/lower/lower_dw.c
index b029607..0aa2a83 100644 (file)
--- a/ir/lower/lower_dw.c
+++ b/ir/lower/lower_dw.c
@@ -1992,7 +1992,7 @@ static int cmp_op_mode(const void *elt, const void *key, size_t size)
        const op_mode_entry_t *e2 = (const op_mode_entry_t*)key;
        (void) size;
 
-       return (e1->op - e2->op) | (e1->imode - e2->imode) | (e1->omode - e2->omode);
+       return (e1->op != e2->op) | (e1->imode != e2->imode) | (e1->omode != e2->omode);
 }
 
 /**
@@ -2004,7 +2004,7 @@ static int cmp_conv_tp(const void *elt, const void *key, size_t size)
        const conv_tp_entry_t *e2 = (const conv_tp_entry_t*)key;
        (void) size;
 
-       return (e1->imode - e2->imode) | (e1->omode - e2->omode);
+       return (e1->imode != e2->imode) | (e1->omode != e2->omode);
 }
 
 /**