1 ; RUN: opt -loop-reduce -S < %s | FileCheck %s
3 ; Test LSR's use of SplitCriticalEdge during phi rewriting.
4 ; Verify that identical edges are merged. rdar://problem/6453893
6 target triple = "x86-apple-darwin"
10 ; CHECK: phi i8* [ %lsr.iv.next1, %bbA.bb89_crit_edge ], [ %lsr.iv.next1, %bbB.bb89_crit_edge ]{{$}}
17 %rec = phi i32 [ %next, %loop ], [ 0, %entry ]
18 %next = add i32 %rec, 1
19 %tmp75 = getelementptr i8* null, i32 %next
20 br i1 false, label %loop, label %loopexit
23 br i1 false, label %bbA, label %bbB
26 switch i32 0, label %bb89 [
32 switch i8 0, label %bb89 [
38 %tmp75phi = phi i8* [ %tmp75, %bbA ], [ %tmp75, %bbA ], [ %tmp75, %bbA ], [ %tmp75, %bbB ], [ %tmp75, %bbB ], [ %tmp75, %bbB ]