1 ; RUN: llc < %s -O3 -march=x86-64 -mcpu=core2 | FileCheck %s
3 declare i1 @check() nounwind
4 declare i1 @foo(i8*, i8*, i8*) nounwind
6 ; Check that redundant phi elimination ran
12 define i32 @test(i8* %base) nounwind uwtable ssp {
14 br label %while.body.lr.ph.i
16 while.body.lr.ph.i: ; preds = %cond.true.i
17 br label %while.body.i
19 while.body.i: ; preds = %cond.true29.i, %while.body.lr.ph.i
20 %indvars.iv7.i = phi i64 [ 16, %while.body.lr.ph.i ], [ %indvars.iv.next8.i, %cond.true29.i ]
21 %i.05.i = phi i64 [ 0, %while.body.lr.ph.i ], [ %indvars.iv7.i, %cond.true29.i ]
22 %sext.i = shl i64 %i.05.i, 32
23 %idx.ext.i = ashr exact i64 %sext.i, 32
24 %add.ptr.sum.i = add i64 %idx.ext.i, 16
27 for.body.i: ; preds = %for.body.i, %while.body.i
28 %indvars.iv.i = phi i64 [ 0, %while.body.i ], [ %indvars.iv.next.i, %for.body.i ]
29 %add.ptr.sum = add i64 %add.ptr.sum.i, %indvars.iv.i
30 %arrayidx22.i = getelementptr inbounds i8, i8* %base, i64 %add.ptr.sum
31 %0 = load i8, i8* %arrayidx22.i, align 1
32 %indvars.iv.next.i = add i64 %indvars.iv.i, 1
33 %cmp = call i1 @check() nounwind
34 br i1 %cmp, label %for.end.i, label %for.body.i
36 for.end.i: ; preds = %for.body.i
37 %add.ptr.i144 = getelementptr inbounds i8, i8* %base, i64 %add.ptr.sum.i
38 %cmp2 = tail call i1 @foo(i8* %add.ptr.i144, i8* %add.ptr.i144, i8* undef) nounwind
39 br i1 %cmp2, label %cond.true29.i, label %cond.false35.i
41 cond.true29.i: ; preds = %for.end.i
42 %indvars.iv.next8.i = add i64 %indvars.iv7.i, 16
43 br i1 false, label %exit, label %while.body.i
45 cond.false35.i: ; preds = %for.end.i
48 exit: ; preds = %cond.true29.i, %cond.true.i
52 %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771 = type { i32, i32, i32 }
54 @tags = external global [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], align 16
56 ; PR11782: SCEVExpander assert
58 ; Test phi reuse after LSR that requires SCEVExpander to hoist an
65 define void @test2(i32 %n) nounwind uwtable {
67 br i1 undef, label %while.end, label %for.cond468
69 for.cond468: ; preds = %if.then477, %entry
70 %indvars.iv1163 = phi i64 [ %indvars.iv.next1164, %if.then477 ], [ 1, %entry ]
71 %k.0.in = phi i32* [ %last, %if.then477 ], [ getelementptr inbounds ([5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771]* @tags, i64 0, i64 0, i32 2), %entry ]
72 %k.0 = load i32, i32* %k.0.in, align 4
73 %0 = trunc i64 %indvars.iv1163 to i32
74 %cmp469 = icmp slt i32 %0, %n
75 br i1 %cmp469, label %for.body471, label %for.inc498
77 for.body471: ; preds = %for.cond468
78 %first = getelementptr inbounds [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771]* @tags, i64 0, i64 %indvars.iv1163, i32 1
79 %1 = load i32, i32* %first, align 4
80 br i1 undef, label %if.then477, label %for.inc498
82 if.then477: ; preds = %for.body471
83 %last = getelementptr inbounds [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771]* @tags, i64 0, i64 %indvars.iv1163, i32 2
84 %indvars.iv.next1164 = add i64 %indvars.iv1163, 1
87 for.inc498: ; preds = %for.inc498, %for.body471, %for.cond468
90 while.end: ; preds = %entry
94 ; PR12898: SCEVExpander crash
95 ; Test redundant phi elimination when the deleted phi's increment is
101 ; CHECK-NEXT: Parent Loop
102 ; CHECK-NEXT: Inner Loop
107 define fastcc void @test3(double* nocapture %u) nounwind uwtable ssp {
109 br i1 undef, label %meshBB1, label %meshBB5
111 for.inc8.us.i: ; preds = %for.body3.us.i
112 br i1 undef, label %meshBB1, label %meshBB
114 for.body3.us.i: ; preds = %meshBB, %for.body3.lr.ph.us.i
115 %indvars.iv.i.SV.phi = phi i64 [ %indvars.iv.next.i, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]
116 %storemerge13.us.i.SV.phi = phi i32 [ 0, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]
117 %Opq.sa.calc12 = sub i32 undef, 227
118 %0 = add nsw i64 %indvars.iv.i.SV.phi, %indvars.iv8.i.SV.phi26
119 %1 = trunc i64 %0 to i32
120 %mul.i.us.i = mul nsw i32 0, %1
121 %arrayidx5.us.i = getelementptr inbounds double, double* %u, i64 %indvars.iv.i.SV.phi
122 %2 = load double, double* %arrayidx5.us.i, align 8
123 %indvars.iv.next.i = add i64 %indvars.iv.i.SV.phi, 1
124 br i1 undef, label %for.inc8.us.i, label %meshBB
126 for.body3.lr.ph.us.i: ; preds = %meshBB1, %meshBB
127 %indvars.iv8.i.SV.phi26 = phi i64 [ undef, %meshBB1 ], [ %indvars.iv8.i.SV.phi24, %meshBB ]
128 %arrayidx.us.i = getelementptr inbounds double, double* undef, i64 %indvars.iv8.i.SV.phi26
129 %3 = add i64 %indvars.iv8.i.SV.phi26, 1
130 br label %for.body3.us.i
132 for.inc8.us.i2: ; preds = %meshBB5
135 eval_At_times_u.exit: ; preds = %meshBB5
138 meshBB: ; preds = %for.body3.us.i, %for.inc8.us.i
139 %indvars.iv8.i.SV.phi24 = phi i64 [ undef, %for.body3.us.i ], [ %3, %for.inc8.us.i ]
140 %meshStackVariable.phi = phi i32 [ %Opq.sa.calc12, %for.body3.us.i ], [ undef, %for.inc8.us.i ]
141 br i1 undef, label %for.body3.lr.ph.us.i, label %for.body3.us.i
143 meshBB1: ; preds = %for.inc8.us.i, %entry
144 br label %for.body3.lr.ph.us.i
146 meshBB5: ; preds = %entry
147 br i1 undef, label %eval_At_times_u.exit, label %for.inc8.us.i2