| ; RUN: opt < %s -S -loop-unroll -mtriple aarch64 -mcpu=cortex-a57 | FileCheck %s |
| |
| ; Partial unroll 8 times for this loop. |
| define void @unroll1() nounwind { |
| 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: icmp |
| |
| ; Partial unroll 16 times for this loop. |
| define void @unroll2() nounwind { |
| entry: |
| br label %loop1 |
| |
| loop1: |
| %iv1 = phi i32 [ 0, %entry ], [ %inc1, %loop1.latch ] |
| br label %loop2.header |
| |
| loop2.header: |
| br label %loop2 |
| |
| loop2: |
| %iv2 = phi i32 [ 0, %loop2.header ], [ %inc2, %loop2 ] |
| %inc2 = add i32 %iv2, 1 |
| %exitcnd2 = icmp uge i32 %inc2, 1024 |
| br i1 %exitcnd2, label %exit2, label %loop2 |
| |
| exit2: |
| br label %loop1.latch |
| |
| loop1.latch: |
| %inc1 = add i32 %iv1, 1 |
| %exitcnd1 = icmp uge i32 %inc1, 1024 |
| br i1 %exitcnd2, label %exit, label %loop1 |
| |
| 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: icmp |