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.
6 target 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"
8 define void @test() nounwind {
10 br i1 undef, label %for.body11, label %for.end285
12 for.body11: ; preds = %entry
14 %shl132 = shl i32 %shl, 1
17 for.body153: ; preds = %for.body153, %for.body11
18 br i1 undef, label %for.body170, label %for.body153
20 ; CHECK: add 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
24 for.body170: ; preds = %for.body170, %for.body153
25 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ]
27 %add = add nsw i32 %i2.19, 1
28 %add.idxprom = sext i32 %add to i64
30 %sub = sub nsw i32 %i2.19, 2
31 %sub.idxprom = sext i32 %sub to i64
33 %sub.neg = sub nsw i32 4, %i2.19
34 %sub.neg.idxprom = sext i32 %sub.neg to i64
36 %mul = mul nsw i32 %i2.19, 8
37 %mul.idxprom = sext i32 %mul to i64
39 %add249 = add nsw i32 %i2.19, %shl132
41 for.end285: ; preds = %entry