| ; RUN: opt < %s -S -loop-unroll -unroll-threshold=800 -unroll-peel-max-count=0 | FileCheck %s |
| |
| ; We should not peel this loop even though we can, because the max count is set |
| ; to zero. |
| define i32 @invariant_backedge_neg_1(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @invariant_backedge_neg_1 |
| ; CHECK-NOT loop.peel{{.*}}: |
| ; CHECK: loop: |
| ; CHECK: %i = phi |
| ; CHECK: %sum = phi |
| ; CHECK: %plus = phi |
| entry: |
| br label %loop |
| |
| loop: |
| %i = phi i32 [ 0, %entry ], [ %inc, %loop ] |
| %sum = phi i32 [ 0, %entry ], [ %incsum, %loop ] |
| %plus = phi i32 [ %a, %entry ], [ %b, %loop ] |
| |
| %incsum = add i32 %sum, %plus |
| %inc = add i32 %i, 1 |
| %cmp = icmp slt i32 %i, 1000 |
| |
| br i1 %cmp, label %loop, label %exit |
| |
| exit: |
| ret i32 %sum |
| } |
