1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -S -loop-unroll -loop-unroll -verify-dom-info -debug-only=loop-unroll -unroll-peel-max-count=7 2>&1 | FileCheck %s
3; REQUIRES: asserts
4
5declare void @f1()
6declare void @f2()
7
8; Check that we can peel off iterations that make conditions true.
9; The second invocation of loop-unroll will NOT do profile based peeling of
10; remained iterations because the total number of peeled iterations exceeds
11; threashold specified with -unroll-peel-max-count=7.
12define void @test2(i32 %k) !prof !4 {
13; CHECK: Loop Unroll: F[test2] Loop %for.body
14; CHECK: PEELING loop %for.body with iteration count 2!
15; CHECK-NOT: llvm.loop.unroll.disable
16for.body.lr.ph:
17  br label %for.body
18
19for.body:
20  %i.05 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ]
21  %cmp1 = icmp ult i32 %i.05, 2
22  br i1 %cmp1, label %if.then, label %if.else
23
24if.then:
25  call void @f1()
26  br label %for.inc
27
28if.else:
29  call void @f2()
30  br label %for.inc
31
32for.inc:
33  %inc = add nsw i32 %i.05, 1
34  %cmp = icmp slt i32 %inc, %k
35  br i1 %cmp, label %for.body, label %for.end, !llvm.loop !1, !prof !3
36
37for.end:
38  ret void
39}
40
41!1 = distinct !{!1}
42!3 = !{!"branch_weights", i32 8, i32 1}
43!4 = !{!"function_entry_count", i64 1}
44