1 ; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s 2 3 define void @f(i1* %condition) { 4 ; CHECK-LABEL: Classifying expressions for: @f 5 entry: 6 br label %loop 7 8 loop: 9 %idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ] 10 %idx.inc = add nsw i32 %idx, 1 11 12 %idx.inc2 = add i32 %idx.inc, 1 13 %idx.inc2.zext = zext i32 %idx.inc2 to i64 14 15 ; CHECK: %idx.inc2.zext = zext i32 %idx.inc2 to i64 16 ; CHECK-NEXT: --> {2,+,1}<nuw><%loop> 17 18 %c = load volatile i1, i1* %condition 19 br i1 %c, label %loop, label %exit 20 21 exit: 22 ret void 23 } 24 25 define void @g(i1* %condition) { 26 ; CHECK-LABEL: Classifying expressions for: @g 27 entry: 28 br label %loop 29 30 loop: 31 %idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ] 32 %idx.inc = add nsw i32 %idx, 3 33 34 %idx.inc2 = add i32 %idx.inc, -1 35 %idx.inc2.sext = sext i32 %idx.inc2 to i64 36 ; CHECK: %idx.inc2.sext = sext i32 %idx.inc2 to i64 37 ; CHECK-NEXT: --> {2,+,3}<nuw><nsw><%loop> 38 39 %c = load volatile i1, i1* %condition 40 br i1 %c, label %loop, label %exit 41 42 exit: 43 ret void 44 } 45
