1 ; RUN: opt -mtriple amdgcn-unknown-amdhsa -analyze -divergence -use-gpu-divergence-analysis %s | FileCheck %s
6 define void @tw1(i32 addrspace(4)* noalias nocapture readonly %A, i32 addrspace(4)* noalias nocapture %B) local_unnamed_addr #2 {
7 ; CHECK: Printing analysis 'Legacy Divergence Analysis' for function 'tw1':
8 ; CHECK: DIVERGENT: i32 addrspace(4)* %A
9 ; CHECK: DIVERGENT: i32 addrspace(4)* %B
11 ; CHECK: DIVERGENT: %call = tail call i32 @gf2(i32 0) #0
12 ; CHECK: DIVERGENT: %cmp = icmp ult i32 %call, 16
13 ; CHECK: DIVERGENT: br i1 %cmp, label %if.then, label %new_exit
14 %call = tail call i32 @gf2(i32 0) #3
15 %cmp = icmp ult i32 %call, 16
16 br i1 %cmp, label %if.then, label %new_exit
19 ; CHECK: DIVERGENT: %call1 = tail call i32 @gf1(i32 0) #0
20 ; CHECK: DIVERGENT: %arrayidx = getelementptr inbounds i32, i32 addrspace(4)* %A, i32 %call1
21 ; CHECK: DIVERGENT: %0 = load i32, i32 addrspace(4)* %arrayidx, align 4
22 ; CHECK: DIVERGENT: %cmp225 = icmp sgt i32 %0, 0
23 ; CHECK: DIVERGENT: %arrayidx10 = getelementptr inbounds i32, i32 addrspace(4)* %B, i32 %call1
24 ; CHECK: DIVERGENT: br i1 %cmp225, label %while.body.preheader, label %if.then.while.end_crit_edge
25 %call1 = tail call i32 @gf1(i32 0) #4
26 %arrayidx = getelementptr inbounds i32, i32 addrspace(4)* %A, i32 %call1
27 %0 = load i32, i32 addrspace(4)* %arrayidx, align 4
28 %cmp225 = icmp sgt i32 %0, 0
29 %arrayidx10 = getelementptr inbounds i32, i32 addrspace(4)* %B, i32 %call1
30 br i1 %cmp225, label %while.body.preheader, label %if.then.while.end_crit_edge
35 if.then.while.end_crit_edge:
36 ; CHECK: DIVERGENT: %.pre = load i32, i32 addrspace(4)* %arrayidx10, align 4
37 %.pre = load i32, i32 addrspace(4)* %arrayidx10, align 4
41 ; CHECK-NOT: DIVERGENT: %i.026 = phi i32 [ %inc, %if.end.while.body_crit_edge ], [ 0, %while.body.preheader ]
42 ; CHECK: DIVERGENT: %call3 = tail call i32 @gf1(i32 0) #0
43 ; CHECK: DIVERGENT: %cmp4 = icmp ult i32 %call3, 10
44 ; CHECK: DIVERGENT: %arrayidx6 = getelementptr inbounds i32, i32 addrspace(4)* %A, i32 %i.026
45 ; CHECK: DIVERGENT: %1 = load i32, i32 addrspace(4)* %arrayidx6, align 4
46 ; CHECK: DIVERGENT: br i1 %cmp4, label %if.then5, label %if.else
47 %i.026 = phi i32 [ %inc, %if.end.while.body_crit_edge ], [ 0, %while.body.preheader ]
48 %call3 = tail call i32 @gf1(i32 0) #4
49 %cmp4 = icmp ult i32 %call3, 10
50 %arrayidx6 = getelementptr inbounds i32, i32 addrspace(4)* %A, i32 %i.026
51 %1 = load i32, i32 addrspace(4)* %arrayidx6, align 4
52 br i1 %cmp4, label %if.then5, label %if.else
55 ; CHECK: DIVERGENT: %mul = shl i32 %1, 1
56 ; CHECK: DIVERGENT: %2 = load i32, i32 addrspace(4)* %arrayidx10, align 4
57 ; CHECK: DIVERGENT: %add = add nsw i32 %2, %mul
59 %2 = load i32, i32 addrspace(4)* %arrayidx10, align 4
60 %add = add nsw i32 %2, %mul
64 ; CHECK: DIVERGENT: %mul9 = shl i32 %1, 2
65 ; CHECK: DIVERGENT: %3 = load i32, i32 addrspace(4)* %arrayidx10, align 4
66 ; CHECK: DIVERGENT: %add11 = add nsw i32 %3, %mul9
68 %3 = load i32, i32 addrspace(4)* %arrayidx10, align 4
69 %add11 = add nsw i32 %3, %mul9
73 ; CHECK: DIVERGENT: %storemerge = phi i32 [ %add11, %if.else ], [ %add, %if.then5 ]
74 ; CHECK: DIVERGENT: store i32 %storemerge, i32 addrspace(4)* %arrayidx10, align 4
75 ; CHECK-NOT: DIVERGENT: %inc = add nuw nsw i32 %i.026, 1
76 ; CHECK: DIVERGENT: %exitcond = icmp ne i32 %inc, %0
77 ; CHECK: DIVERGENT: br i1 %exitcond, label %if.end.while.body_crit_edge, label %while.end.loopexit
78 %storemerge = phi i32 [ %add11, %if.else ], [ %add, %if.then5 ]
79 store i32 %storemerge, i32 addrspace(4)* %arrayidx10, align 4
80 %inc = add nuw nsw i32 %i.026, 1
81 %exitcond = icmp ne i32 %inc, %0
82 br i1 %exitcond, label %if.end.while.body_crit_edge, label %while.end.loopexit
84 if.end.while.body_crit_edge:
88 ; CHECK: DIVERGENT: %storemerge.lcssa = phi i32 [ %storemerge, %if.end ]
89 %storemerge.lcssa = phi i32 [ %storemerge, %if.end ]
93 ; CHECK: DIVERGENT: %4 = phi i32 [ %.pre, %if.then.while.end_crit_edge ], [ %storemerge.lcssa, %while.end.loopexit ]
94 ; CHECK: DIVERGENT: %i.0.lcssa = phi i32 [ 0, %if.then.while.end_crit_edge ], [ %0, %while.end.loopexit ]
95 ; CHECK: DIVERGENT: %sub = sub nsw i32 %4, %i.0.lcssa
96 ; CHECK: DIVERGENT: store i32 %sub, i32 addrspace(4)* %arrayidx10, align 4
97 %4 = phi i32 [ %.pre, %if.then.while.end_crit_edge ], [ %storemerge.lcssa, %while.end.loopexit ]
98 %i.0.lcssa = phi i32 [ 0, %if.then.while.end_crit_edge ], [ %0, %while.end.loopexit ]
99 %sub = sub nsw i32 %4, %i.0.lcssa
100 store i32 %sub, i32 addrspace(4)* %arrayidx10, align 4
107 attributes #0 = { nounwind readnone }
108 attributes #1 = { nounwind readnone }
109 attributes #2 = { nounwind readnone }
110 attributes #3 = { nounwind readnone }
111 attributes #4 = { nounwind readnone }