1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -simple-loop-unswitch-inject-invariant-conditions=true -passes='loop(simple-loop-unswitch<nontrivial>,loop-instsimplify)' -S | FileCheck %s 3 4define void @test() { 5; CHECK-LABEL: @test( 6; CHECK-NEXT: bb: 7; CHECK-NEXT: [[TMP:%.*]] = call i1 @llvm.experimental.widenable.condition() 8; CHECK-NEXT: [[TMP1:%.*]] = load atomic i32, ptr addrspace(1) poison unordered, align 8 9; CHECK-NEXT: [[TMP2:%.*]] = load atomic i32, ptr addrspace(1) poison unordered, align 8 10; CHECK-NEXT: br i1 [[TMP]], label [[BB_SPLIT:%.*]], label [[BB3_SPLIT_US:%.*]] 11; CHECK: bb.split: 12; CHECK-NEXT: br label [[BB3:%.*]] 13; CHECK: bb3: 14; CHECK-NEXT: br label [[BB3_SPLIT:%.*]] 15; CHECK: bb3.split.us: 16; CHECK-NEXT: br label [[BB4_US:%.*]] 17; CHECK: bb4.us: 18; CHECK-NEXT: [[TMP5_US:%.*]] = phi i32 [ poison, [[BB3_SPLIT_US]] ] 19; CHECK-NEXT: [[TMP6_US:%.*]] = phi i32 [ poison, [[BB3_SPLIT_US]] ] 20; CHECK-NEXT: [[TMP7_US:%.*]] = add nuw nsw i32 [[TMP6_US]], 2 21; CHECK-NEXT: [[TMP8_US:%.*]] = icmp ult i32 [[TMP7_US]], [[TMP2]] 22; CHECK-NEXT: br i1 [[TMP8_US]], label [[BB9_US:%.*]], label [[BB16_SPLIT_US:%.*]], !prof [[PROF0:![0-9]+]] 23; CHECK: bb9.us: 24; CHECK-NEXT: br label [[BB17_SPLIT_US:%.*]] 25; CHECK: bb16.split.us: 26; CHECK-NEXT: br label [[BB16:%.*]] 27; CHECK: bb17.split.us: 28; CHECK-NEXT: br label [[BB17:%.*]] 29; CHECK: bb3.split: 30; CHECK-NEXT: br label [[BB4:%.*]] 31; CHECK: bb4: 32; CHECK-NEXT: [[TMP5:%.*]] = phi i32 [ poison, [[BB3_SPLIT]] ], [ [[TMP14:%.*]], [[BB13:%.*]] ] 33; CHECK-NEXT: [[TMP6:%.*]] = phi i32 [ poison, [[BB3_SPLIT]] ], [ [[TMP5]], [[BB13]] ] 34; CHECK-NEXT: [[TMP7:%.*]] = add nuw nsw i32 [[TMP6]], 2 35; CHECK-NEXT: [[TMP8:%.*]] = icmp ult i32 [[TMP7]], [[TMP2]] 36; CHECK-NEXT: br i1 [[TMP8]], label [[BB9:%.*]], label [[BB16_SPLIT:%.*]], !prof [[PROF0]] 37; CHECK: bb9: 38; CHECK-NEXT: [[TMP10:%.*]] = icmp ult i32 [[TMP7]], [[TMP1]] 39; CHECK-NEXT: br i1 [[TMP10]], label [[BB12:%.*]], label [[BB17_SPLIT:%.*]], !prof [[PROF0]] 40; CHECK: bb12: 41; CHECK-NEXT: br i1 true, label [[BB15:%.*]], label [[BB13]] 42; CHECK: bb13: 43; CHECK-NEXT: [[TMP14]] = add nuw nsw i32 [[TMP5]], 1 44; CHECK-NEXT: br label [[BB4]] 45; CHECK: bb15: 46; CHECK-NEXT: br label [[BB3]] 47; CHECK: bb16.split: 48; CHECK-NEXT: br label [[BB16]] 49; CHECK: bb16: 50; CHECK-NEXT: ret void 51; CHECK: bb17.split: 52; CHECK-NEXT: br label [[BB17]] 53; CHECK: bb17: 54; CHECK-NEXT: ret void 55; 56bb: 57 %tmp = call i1 @llvm.experimental.widenable.condition() 58 %tmp1 = load atomic i32, ptr addrspace(1) poison unordered, align 8 59 %tmp2 = load atomic i32, ptr addrspace(1) poison unordered, align 8 60 br label %bb3 61 62bb3: ; preds = %bb15, %bb 63 br label %bb4 64 65bb4: ; preds = %bb13, %bb3 66 %tmp5 = phi i32 [ poison, %bb3 ], [ %tmp14, %bb13 ] 67 %tmp6 = phi i32 [ poison, %bb3 ], [ %tmp5, %bb13 ] 68 %tmp7 = add nuw nsw i32 %tmp6, 2 69 %tmp8 = icmp ult i32 %tmp7, %tmp2 70 br i1 %tmp8, label %bb9, label %bb16, !prof !0 71 72bb9: ; preds = %bb4 73 %tmp10 = icmp ult i32 %tmp7, %tmp1 74 %tmp11 = and i1 %tmp10, %tmp 75 br i1 %tmp11, label %bb12, label %bb17, !prof !0 76 77bb12: ; preds = %bb9 78 br i1 poison, label %bb15, label %bb13 79 80bb13: ; preds = %bb12 81 %tmp14 = add nuw nsw i32 %tmp5, 1 82 br label %bb4 83 84bb15: ; preds = %bb12 85 br label %bb3 86 87bb16: ; preds = %bb4 88 ret void 89 90bb17: ; preds = %bb9 91 ret void 92} 93 94; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(inaccessiblemem: readwrite) 95declare i1 @llvm.experimental.widenable.condition() 96 97!0 = !{!"branch_weights", i32 1048576, i32 1} 98 99