1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -S -loop-unroll -unroll-force-peel-count=1 -verify-scev -verify-dom-info | FileCheck %s
5 define void @test1(i32 %k) {
8 ; CHECK-NEXT: br label [[FOR_BODY_PEEL_BEGIN:%.*]]
9 ; CHECK: for.body.peel.begin:
10 ; CHECK-NEXT: br label [[FOR_BODY_PEEL:%.*]]
11 ; CHECK: for.body.peel:
12 ; CHECK-NEXT: [[INC_PEEL:%.*]] = add nsw i32 0, 1
13 ; CHECK-NEXT: [[CMP_PEEL:%.*]] = icmp ult i32 0, [[K:%.*]]
14 ; CHECK-NEXT: br i1 [[CMP_PEEL]], label [[FOR_BODY_PEEL_NEXT:%.*]], label [[FOR_END:%.*]]
15 ; CHECK: for.body.peel.next:
16 ; CHECK-NEXT: br label [[FOR_BODY_PEEL_NEXT1:%.*]]
17 ; CHECK: for.body.peel.next1:
18 ; CHECK-NEXT: br label [[ENTRY_PEEL_NEWPH:%.*]]
19 ; CHECK: entry.peel.newph:
20 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
22 ; CHECK-NEXT: [[I_05:%.*]] = phi i32 [ [[INC_PEEL]], [[ENTRY_PEEL_NEWPH]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
23 ; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_05]], 1
24 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[I_05]], [[K]]
25 ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]], !llvm.loop !0
26 ; CHECK: for.end.loopexit:
27 ; CHECK-NEXT: br label [[FOR_END]]
29 ; CHECK-NEXT: ret void
35 %i.05 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
36 %inc = add nsw i32 %i.05, 1
37 %cmp = icmp ult i32 %i.05, %k
38 br i1 %cmp, label %for.body, label %for.end