2 ; RUN: opt < %s -loop-unswitch -stats -disable-output 2>&1 | FileCheck %s
3 ; RUN: opt < %s -loop-unswitch -enable-mssa-loop-dependency=true -verify-memoryssa -stats -disable-output 2>&1 | FileCheck %s
6 define i32 @a(i32 %x, i32 %y) nounwind {
7 ; CHECK: 1 loop-unswitch - Number of branches unswitched
8 ; CHECK-NOT: Number of branches unswitched
11 %0 = icmp ult i32 0, %y ; <i1> [#uses=1]
12 br i1 %0, label %bb.nph, label %bb4
14 bb.nph: ; preds = %entry
15 %1 = icmp eq i32 %x, 0 ; <i1> [#uses=1]
18 bb: ; preds = %bb.nph, %bb3
19 %i.01 = phi i32 [ %3, %bb3 ], [ 0, %bb.nph ] ; <i32> [#uses=1]
20 br i1 %1, label %bb2, label %bb1
23 %2 = tail call i32 (...) @b() nounwind ; <i32> [#uses=0]
26 bb2: ; preds = %bb, %bb1
27 %3 = add i32 %i.01, 1 ; <i32> [#uses=2]
31 %i.0 = phi i32 [ %3, %bb2 ] ; <i32> [#uses=1]
32 %4 = icmp ult i32 %i.0, %y ; <i1> [#uses=1]
33 br i1 %4, label %bb, label %bb3.bb4_crit_edge
35 bb3.bb4_crit_edge: ; preds = %bb3
38 bb4: ; preds = %bb3.bb4_crit_edge, %entry