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 declare void @use(i64 %x)
10 define void @test() nounwind {
12 br i1 undef, label %for.body11, label %for.end285
14 for.body11: ; preds = %entry
16 %shl132 = shl i32 %shl, 1
19 for.body153: ; preds = %for.body153, %for.body11
20 br i1 undef, label %for.body170, label %for.body153
22 ; CHECK: add nuw nsw i64 %indvars.iv, 1
23 ; CHECK: sub nsw i64 %indvars.iv, 2
24 ; CHECK: sub nsw i64 4, %indvars.iv
25 ; CHECK: mul nsw i64 %indvars.iv, 8
26 for.body170: ; preds = %for.body170, %for.body153
27 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ]
29 %add = add nsw i32 %i2.19, 1
30 %add.idxprom = sext i32 %add to i64
31 call void @use(i64 %add.idxprom)
33 %sub = sub nsw i32 %i2.19, 2
34 %sub.idxprom = sext i32 %sub to i64
35 call void @use(i64 %sub.idxprom)
37 %sub.neg = sub nsw i32 4, %i2.19
38 %sub.neg.idxprom = sext i32 %sub.neg to i64
39 call void @use(i64 %sub.neg.idxprom)
41 %mul = mul nsw i32 %i2.19, 8
42 %mul.idxprom = sext i32 %mul to i64
43 call void @use(i64 %mul.idxprom)
45 %add249 = add nsw i32 %i2.19, %shl132
47 for.end285: ; preds = %entry