| ; RUN: opt < %s -S -loop-unroll -unroll-allow-partial | FileCheck %s |
| ; Loop size = 3, when the function has the optsize attribute, the |
| ; OptSizeUnrollThreshold, i.e. 50, is used, hence the loop should be unrolled |
| ; by 32 times because (1 * 32) + 2 < 50 (whereas (1 * 64 + 2) is not). |
| define void @unroll_opt_for_size() nounwind optsize { |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 0, %entry ], [ %inc, %loop ] |
| %inc = add i32 %iv, 1 |
| %exitcnd = icmp uge i32 %inc, 1024 |
| br i1 %exitcnd, label %exit, label %loop |
| |
| exit: |
| ret void |
| } |
| |
| ; CHECK: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: add |
| ; CHECK-NEXT: icmp |
| |
