1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop-unroll<peeling;no-runtime>,simplifycfg,instcombine' -unroll-force-peel-count=3 -verify-dom-info | FileCheck %s 3 4define void @basic(i32 %K, i32 %N) { 5; CHECK-LABEL: @basic( 6; CHECK-NEXT: entry: 7; CHECK-NEXT: br label [[OUTER:%.*]] 8; CHECK: outer: 9; CHECK-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I_INC:%.*]], [[OUTER_BACKEDGE:%.*]] ] 10; CHECK-NEXT: [[CMP_INNER_PEEL:%.*]] = icmp sgt i32 [[K:%.*]], 1 11; CHECK-NEXT: br i1 [[CMP_INNER_PEEL]], label [[INNER_PEEL2:%.*]], label [[OUTER_BACKEDGE]] 12; CHECK: inner.peel2: 13; CHECK-NEXT: [[CMP_INNER_PEEL8:%.*]] = icmp sgt i32 [[K]], 3 14; CHECK-NEXT: br i1 [[CMP_INNER_PEEL8]], label [[INNER:%.*]], label [[OUTER_BACKEDGE]] 15; CHECK: inner: 16; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_INC:%.*]], [[INNER]] ], [ 3, [[INNER_PEEL2]] ] 17; CHECK-NEXT: [[J_INC]] = add nuw nsw i32 [[J]], 1 18; CHECK-NEXT: [[CMP_INNER:%.*]] = icmp slt i32 [[J_INC]], [[K]] 19; CHECK-NEXT: br i1 [[CMP_INNER]], label [[INNER]], label [[OUTER_BACKEDGE]], !llvm.loop [[LOOP0:![0-9]+]] 20; CHECK: outer.backedge: 21; CHECK-NEXT: [[I_INC]] = add i32 [[I]], 1 22; CHECK-NEXT: [[CMP_OUTER:%.*]] = icmp slt i32 [[I_INC]], [[N:%.*]] 23; CHECK-NEXT: br i1 [[CMP_OUTER]], label [[OUTER]], label [[END:%.*]] 24; CHECK: end: 25; CHECK-NEXT: ret void 26; 27entry: 28 br label %outer 29 30outer: 31 %i = phi i32 [ 0, %entry ], [ %i.inc, %outer.backedge ] 32 br label %inner 33 34inner: 35 %j = phi i32 [ 0, %outer ], [ %j.inc, %inner ] 36 %j.inc = add i32 %j, 1 37 %cmp.inner = icmp slt i32 %j.inc, %K 38 br i1 %cmp.inner, label %inner, label %outer.backedge, !llvm.loop !1 39 40outer.backedge: 41 %i.inc = add i32 %i, 1 42 %cmp.outer = icmp slt i32 %i.inc, %N 43 br i1 %cmp.outer, label %outer, label %end 44 45end: 46 ret void 47} 48 49!1 = distinct !{!1} 50