; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s define void @single_loop(i32* %buf, i32 %start) { ; CHECK-LABEL: Classifying expressions for: @single_loop entry: %val = add i32 %start, 400 br label %loop loop: %counter = phi i32 [ 0, %entry ], [ %counter.inc, %loop ] %idx = phi i32 [ %start, %entry ], [ %idx.inc, %loop ] ; CHECK: %counter = phi i32 [ 0, %entry ], [ %counter.inc, %loop ] ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable } ; CHECK: %idx = phi i32 [ %start, %entry ], [ %idx.inc, %loop ] ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable } ; CHECK: %val2 = add i32 %start, 400 ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Invariant } ; CHECK: %idx.inc = add nsw i32 %idx, 1 ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable } ; CHECK: %val3 = load volatile i32, i32* %buf ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Variant } %val2 = add i32 %start, 400 %idx.inc = add nsw i32 %idx, 1 %idx.inc.sext = sext i32 %idx.inc to i64 %condition = icmp eq i32 %counter, 1 %counter.inc = add i32 %counter, 1 %val3 = load volatile i32, i32* %buf br i1 %condition, label %exit, label %loop exit: ret void } define void @nested_loop(double* %p, i64 %m) { ; CHECK-LABEL: Classifying expressions for: @nested_loop ; CHECK: %j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ] ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Computable, %bb: Invariant } ; CHECK: %i = phi i64 [ 0, %outer.loop ], [ %i.next, %bb ] ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Computable, %outer.loop: Variant } ; CHECK: %j.add = add i64 %j, 100 ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Invariant, %outer.loop: Computable } ; CHECK: %i.next = add i64 %i, 1 ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Computable, %outer.loop: Variant } ; CHECK: %j.next = add i64 %j, 91 ; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Computable, %bb: Invariant } entry: %k = icmp sgt i64 %m, 0 br i1 %k, label %outer.loop, label %return outer.loop: %j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ] br label %bb bb: %i = phi i64 [ 0, %outer.loop ], [ %i.next, %bb ] %j.add = add i64 %j, 100 %i.next = add i64 %i, 1 %exitcond = icmp eq i64 %i.next, 91 br i1 %exitcond, label %outer.latch, label %bb outer.latch: %j.next = add i64 %j, 91 %h = icmp eq i64 %j.next, %m br i1 %h, label %return, label %outer.loop return: ret void }