1; RUN: opt < %s -indvars -S | FileCheck %s
2; Test WidenIV::GetExtendedOperandRecurrence.
3; %add, %sub and %mul should be extended to i64 because it is nsw, even though its
4; sext cannot be hoisted outside the loop.
5
6target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
7
8define void @test() nounwind {
9entry:
10  br i1 undef, label %for.body11, label %for.end285
11
12for.body11:                                       ; preds = %entry
13  %shl = shl i32 1, 1
14  %shl132 = shl i32 %shl, 1
15  br label %for.body153
16
17for.body153:                                      ; preds = %for.body153, %for.body11
18  br i1 undef, label %for.body170, label %for.body153
19
20; CHECK: add nuw nsw i64 %indvars.iv, 1
21; CHECK: sub nsw i64 %indvars.iv, 2
22; CHECK: sub nsw i64 4, %indvars.iv
23; CHECK: mul nsw i64 %indvars.iv, 8
24for.body170:                                      ; preds = %for.body170, %for.body153
25  %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ]
26
27  %add = add nsw i32 %i2.19, 1
28  %add.idxprom = sext i32 %add to i64
29
30  %sub = sub nsw i32 %i2.19, 2
31  %sub.idxprom = sext i32 %sub to i64
32
33  %sub.neg = sub nsw i32 4, %i2.19
34  %sub.neg.idxprom = sext i32 %sub.neg to i64
35
36  %mul = mul nsw i32 %i2.19, 8
37  %mul.idxprom = sext i32 %mul to i64
38
39  %add249 = add nsw i32 %i2.19, %shl132
40  br label %for.body170
41for.end285:                                       ; preds = %entry
42  ret void
43}
44