; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py ; RUN: opt -disable-output "-passes=print" < %s 2>&1 | FileCheck %s define void @x(ptr %cond) { ; CHECK-LABEL: 'x' ; CHECK-NEXT: Classifying expressions for: @x ; CHECK-NEXT: %idx = phi i8 [ 0, %entry ], [ %idx.inc, %loop ] ; CHECK-NEXT: --> {0,+,1}<%loop> U: [0,-128) S: [0,-128) Exits: <> LoopDispositions: { %loop: Computable } ; CHECK-NEXT: %idx.inc = add nsw i8 %idx, 1 ; CHECK-NEXT: --> {1,+,1}<%loop> U: [1,0) S: [1,0) Exits: <> LoopDispositions: { %loop: Computable } ; CHECK-NEXT: %c = load volatile i1, ptr %cond, align 1 ; CHECK-NEXT: --> %c U: full-set S: full-set Exits: <> LoopDispositions: { %loop: Variant } ; CHECK-NEXT: Determining loop execution counts for: @x ; CHECK-NEXT: Loop %loop: Unpredictable backedge-taken count. ; CHECK-NEXT: Loop %loop: Unpredictable constant max backedge-taken count. ; CHECK-NEXT: Loop %loop: Unpredictable symbolic max backedge-taken count. ; CHECK-NEXT: Loop %loop: Unpredictable predicated backedge-taken count. ; entry: br label %loop loop: %idx = phi i8 [ 0, %entry ], [ %idx.inc, %loop ] %idx.inc = add nsw i8 %idx, 1 %c = load volatile i1, ptr %cond br i1 %c, label %loop, label %exit exit: ret void } define void @y(ptr %addr) { ; CHECK-LABEL: 'y' ; CHECK-NEXT: Classifying expressions for: @y ; CHECK-NEXT: %idx = phi i8 [ -5, %entry ], [ %idx.inc, %loop ] ; CHECK-NEXT: --> {-5,+,1}<%loop> U: [-5,6) S: [-5,6) Exits: 5 LoopDispositions: { %loop: Computable } ; CHECK-NEXT: %idx.inc = add i8 %idx, 1 ; CHECK-NEXT: --> {-4,+,1}<%loop> U: [-4,7) S: [-4,7) Exits: 6 LoopDispositions: { %loop: Computable } ; CHECK-NEXT: Determining loop execution counts for: @y ; CHECK-NEXT: Loop %loop: backedge-taken count is 10 ; CHECK-NEXT: Loop %loop: constant max backedge-taken count is 10 ; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is 10 ; CHECK-NEXT: Loop %loop: Predicated backedge-taken count is 10 ; CHECK-NEXT: Predicates: ; CHECK-NEXT: Loop %loop: Trip multiple is 11 ; entry: br label %loop loop: %idx = phi i8 [-5, %entry ], [ %idx.inc, %loop ] %idx.inc = add i8 %idx, 1 %continue = icmp slt i8 %idx.inc, 6 br i1 %continue, label %loop, label %exit exit: ret void }