Once it has been detected that not all values are the same, nothing can change this fact. So, the function trivial_phi() can return its result as soon as this condition is met. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx> --- simplify.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/simplify.c b/simplify.c index b9f13f655..5413e1dd3 100644 --- a/simplify.c +++ b/simplify.c @@ -202,7 +202,7 @@ static int trivial_phi(pseudo_t *pseudo, struct instruction *insn) } if (last->phi_src == def->phi_src) continue; - same = 0; + return 0; } END_FOR_EACH_PTR(phi); if (same) -- 2.18.0
