| ; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s |
| ; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s |
| |
| define void @x(i1* %cond) { |
| ; CHECK-LABEL: Classifying expressions for: @x |
| entry: |
| br label %loop |
| |
| loop: |
| %idx = phi i8 [ 0, %entry ], [ %idx.inc, %loop ] |
| ; CHECK: %idx = phi i8 [ 0, %entry ], [ %idx.inc, %loop ] |
| ; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%loop> U: [0,-128) S: [0,-128) |
| |
| %idx.inc = add nsw i8 %idx, 1 |
| |
| %c = load volatile i1, i1* %cond |
| br i1 %c, label %loop, label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @y(i8* %addr) { |
| ; CHECK-LABEL: Classifying expressions for: @y |
| entry: |
| br label %loop |
| |
| loop: |
| %idx = phi i8 [-5, %entry ], [ %idx.inc, %loop ] |
| ; CHECK: %idx = phi i8 [ -5, %entry ], [ %idx.inc, %loop ] |
| ; CHECK-NEXT: --> {-5,+,1}<%loop> U: [-5,6) S: [-5,6) |
| |
| %idx.inc = add i8 %idx, 1 |
| |
| %continue = icmp slt i8 %idx.inc, 6 |
| br i1 %continue, label %loop, label %exit |
| |
| exit: |
| ret void |
| } |