| ; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=100 -unroll-dynamic-cost-savings-discount=1000 -unroll-threshold=10 -unroll-percent-dynamic-cost-saved-threshold=50 | FileCheck %s |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| |
| define i64 @propagate_loop_phis() { |
| ; CHECK-LABEL: @propagate_loop_phis( |
| ; CHECK-NOT: br i1 |
| ; CHECK: ret i64 3 |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i64 [ 0, %entry ], [ %inc, %loop ] |
| %x0 = phi i64 [ 0, %entry ], [ %x2, %loop ] |
| %x1 = or i64 %x0, 1 |
| %x2 = or i64 %x1, 2 |
| %inc = add nuw nsw i64 %iv, 1 |
| %cond = icmp sge i64 %inc, 10 |
| br i1 %cond, label %loop.end, label %loop |
| |
| loop.end: |
| %x.lcssa = phi i64 [ %x2, %loop ] |
| ret i64 %x.lcssa |
| } |
