1 ; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
3 %struct.anon = type { i8 }
4 %struct.S = type { i32 }
6 @a = common global %struct.anon zeroinitializer, align 1
7 @b = common global %struct.S zeroinitializer, align 4
9 ; Function Attrs: nounwind ssp uwtable
11 ; CHECK-LABEL: Classifying expressions for: @main
12 store i8 0, i8* getelementptr inbounds (%struct.anon, %struct.anon* @a, i64 0, i32 0), align 1
16 %storemerge1 = phi i8 [ 0, %0 ], [ %inc, %loop ]
17 %m = load volatile i32, i32* getelementptr inbounds (%struct.S, %struct.S* @b, i64 0, i32 0), align 4
18 %inc = add nuw i8 %storemerge1, 1
19 ; CHECK: %inc = add nuw i8 %storemerge1, 1
20 ; CHECK-NEXT: --> {1,+,1}<nuw><%loop>
21 ; CHECK-NOT: --> {1,+,1}<nuw><nsw><%loop>
22 %exitcond = icmp eq i8 %inc, -128
23 br i1 %exitcond, label %exit, label %loop
26 store i8 -128, i8* getelementptr inbounds (%struct.anon, %struct.anon* @a, i64 0, i32 0), align 1