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