| ; RUN: opt < %s -S -passes=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 | |
| } |