1 ; RUN: opt -analyze -scalar-evolution -scalar-evolution < %s | FileCheck %s 2 3 define void @bad.nsw() { 4 ; CHECK-LABEL: Classifying expressions for: @bad.nsw 5 ; CHECK-LABEL: Classifying expressions for: @bad.nsw 6 entry: 7 br label %loop 8 9 loop: 10 %i = phi i8 [ -1, %entry ], [ %i.inc, %loop ] 11 ; CHECK: %i = phi i8 [ -1, %entry ], [ %i.inc, %loop ] 12 ; CHECK-NEXT: --> {-1,+,-128}<nw><%loop> 13 ; CHECK-NOT: --> {-1,+,-128}<nsw><%loop> 14 15 %counter = phi i8 [ 0, %entry ], [ %counter.inc, %loop ] 16 17 %i.inc = add i8 %i, -128 18 %i.sext = sext i8 %i to i16 19 20 %counter.inc = add i8 %counter, 1 21 %continue = icmp eq i8 %counter, 1 22 br i1 %continue, label %exit, label %loop 23 24 exit: 25 ret void 26 } 27
