1; Test a bunch of cases where the cfg simplification code should
2; be able to fold PHI nodes into computation in common cases.  Folding the PHI
3; nodes away allows the branches to be eliminated, performing a simple form of
4; 'if conversion'.
5
6; RUN: opt < %s -simplifycfg -S > %t.xform
7; RUN:   not grep phi %t.xform
8; RUN:   grep ret %t.xform
9
10declare void @use(i1)
11
12declare void @use.upgrd.1(i32)
13
14
15define void @test(i1 %c, i32 %V, i32 %V2) {
16; <label>:0
17        br i1 %c, label %T, label %F
18T:              ; preds = %0
19        br label %F
20F:              ; preds = %T, %0
21        %B1 = phi i1 [ true, %0 ], [ false, %T ]                ; <i1> [#uses=1]
22        %I6 = phi i32 [ %V, %0 ], [ 0, %T ]             ; <i32> [#uses=1]
23        call void @use( i1 %B1 )
24        call void @use.upgrd.1( i32 %I6 )
25        ret void
26}
27
28