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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 52; RUN: opt -passes=loop-distribute -enable-loop-distribute -verify-loop-info -verify-dom-info -S < %s \3; RUN: | FileCheck %s4 5; Check that definitions used outside the loop are handled correctly: (1) they6; are not dropped (2) when version the loop, a phi is added to merge the value7; from the non-distributed loop and the distributed loop.8;9; for (i = 0; i < n; i++) {10; A[i + 1] = A[i] * B[i];11; ==========================12; sum += C[i];13; }14 15@B = common global ptr null, align 816@A = common global ptr null, align 817@C = common global ptr null, align 818@D = common global ptr null, align 819@E = common global ptr null, align 820@SUM = common global i32 0, align 821 22define void @f() {23; CHECK-LABEL: define void @f() {24; CHECK-NEXT: [[ENTRY:.*:]]25; CHECK-NEXT: [[A:%.*]] = load ptr, ptr @A, align 826; CHECK-NEXT: [[B:%.*]] = load ptr, ptr @B, align 827; CHECK-NEXT: [[C:%.*]] = load ptr, ptr @C, align 828; CHECK-NEXT: [[D:%.*]] = load ptr, ptr @D, align 829; CHECK-NEXT: [[E:%.*]] = load ptr, ptr @E, align 830; CHECK-NEXT: br label %[[FOR_BODY_LVER_CHECK:.*]]31; CHECK: [[FOR_BODY_LVER_CHECK]]:32; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[A]], i64 8433; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[C]], i64 8034; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[A]], [[SCEVGEP1]]35; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[C]], [[SCEVGEP]]36; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]37; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label %[[FOR_BODY_PH_LVER_ORIG:.*]], label %[[FOR_BODY_PH_LDIST1:.*]]38; CHECK: [[FOR_BODY_PH_LVER_ORIG]]:39; CHECK-NEXT: br label %[[FOR_BODY_LVER_ORIG:.*]]40; CHECK: [[FOR_BODY_LVER_ORIG]]:41; CHECK-NEXT: [[IND_LVER_ORIG:%.*]] = phi i64 [ 0, %[[FOR_BODY_PH_LVER_ORIG]] ], [ [[ADD_LVER_ORIG:%.*]], %[[FOR_BODY_LVER_ORIG]] ]42; CHECK-NEXT: [[SUM_LVER_ORIG:%.*]] = phi i32 [ 0, %[[FOR_BODY_PH_LVER_ORIG]] ], [ [[SUM_ADD_LVER_ORIG:%.*]], %[[FOR_BODY_LVER_ORIG]] ]43; CHECK-NEXT: [[ARRAYIDXA_LVER_ORIG:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IND_LVER_ORIG]]44; CHECK-NEXT: [[LOADA_LVER_ORIG:%.*]] = load i32, ptr [[ARRAYIDXA_LVER_ORIG]], align 445; CHECK-NEXT: [[ARRAYIDXB_LVER_ORIG:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IND_LVER_ORIG]]46; CHECK-NEXT: [[LOADB_LVER_ORIG:%.*]] = load i32, ptr [[ARRAYIDXB_LVER_ORIG]], align 447; CHECK-NEXT: [[MULA_LVER_ORIG:%.*]] = mul i32 [[LOADB_LVER_ORIG]], [[LOADA_LVER_ORIG]]48; CHECK-NEXT: [[ADD_LVER_ORIG]] = add nuw nsw i64 [[IND_LVER_ORIG]], 149; CHECK-NEXT: [[ARRAYIDXA_PLUS_4_LVER_ORIG:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[ADD_LVER_ORIG]]50; CHECK-NEXT: store i32 [[MULA_LVER_ORIG]], ptr [[ARRAYIDXA_PLUS_4_LVER_ORIG]], align 451; CHECK-NEXT: [[ARRAYIDXC_LVER_ORIG:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IND_LVER_ORIG]]52; CHECK-NEXT: [[LOADC_LVER_ORIG:%.*]] = load i32, ptr [[ARRAYIDXC_LVER_ORIG]], align 453; CHECK-NEXT: [[SUM_ADD_LVER_ORIG]] = add nuw nsw i32 [[SUM_LVER_ORIG]], [[LOADC_LVER_ORIG]]54; CHECK-NEXT: [[EXITCOND_LVER_ORIG:%.*]] = icmp eq i64 [[ADD_LVER_ORIG]], 2055; CHECK-NEXT: br i1 [[EXITCOND_LVER_ORIG]], label %[[FOR_END_LOOPEXIT:.*]], label %[[FOR_BODY_LVER_ORIG]]56; CHECK: [[FOR_BODY_PH_LDIST1]]:57; CHECK-NEXT: br label %[[FOR_BODY_LDIST1:.*]]58; CHECK: [[FOR_BODY_LDIST1]]:59; CHECK-NEXT: [[IND_LDIST1:%.*]] = phi i64 [ 0, %[[FOR_BODY_PH_LDIST1]] ], [ [[ADD_LDIST1:%.*]], %[[FOR_BODY_LDIST1]] ]60; CHECK-NEXT: [[ARRAYIDXA_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IND_LDIST1]]61; CHECK-NEXT: [[LOADA_LDIST1:%.*]] = load i32, ptr [[ARRAYIDXA_LDIST1]], align 4, !alias.scope [[META0:![0-9]+]], !noalias [[META3:![0-9]+]]62; CHECK-NEXT: [[ARRAYIDXB_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IND_LDIST1]]63; CHECK-NEXT: [[LOADB_LDIST1:%.*]] = load i32, ptr [[ARRAYIDXB_LDIST1]], align 4, !alias.scope [[META5:![0-9]+]]64; CHECK-NEXT: [[MULA_LDIST1:%.*]] = mul i32 [[LOADB_LDIST1]], [[LOADA_LDIST1]]65; CHECK-NEXT: [[ADD_LDIST1]] = add nuw nsw i64 [[IND_LDIST1]], 166; CHECK-NEXT: [[ARRAYIDXA_PLUS_4_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[ADD_LDIST1]]67; CHECK-NEXT: store i32 [[MULA_LDIST1]], ptr [[ARRAYIDXA_PLUS_4_LDIST1]], align 4, !alias.scope [[META0]], !noalias [[META3]]68; CHECK-NEXT: [[EXITCOND_LDIST1:%.*]] = icmp eq i64 [[ADD_LDIST1]], 2069; CHECK-NEXT: br i1 [[EXITCOND_LDIST1]], label %[[FOR_BODY_PH:.*]], label %[[FOR_BODY_LDIST1]]70; CHECK: [[FOR_BODY_PH]]:71; CHECK-NEXT: br label %[[FOR_BODY:.*]]72; CHECK: [[FOR_BODY]]:73; CHECK-NEXT: [[IND:%.*]] = phi i64 [ 0, %[[FOR_BODY_PH]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]74; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, %[[FOR_BODY_PH]] ], [ [[SUM_ADD:%.*]], %[[FOR_BODY]] ]75; CHECK-NEXT: [[ADD]] = add nuw nsw i64 [[IND]], 176; CHECK-NEXT: [[ARRAYIDXC:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IND]]77; CHECK-NEXT: [[LOADC:%.*]] = load i32, ptr [[ARRAYIDXC]], align 4, !alias.scope [[META3]]78; CHECK-NEXT: [[SUM_ADD]] = add nuw nsw i32 [[SUM]], [[LOADC]]79; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[ADD]], 2080; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_END_LOOPEXIT2:.*]], label %[[FOR_BODY]]81; CHECK: [[FOR_END_LOOPEXIT]]:82; CHECK-NEXT: [[SUM_ADD_LVER_PH:%.*]] = phi i32 [ [[SUM_ADD_LVER_ORIG]], %[[FOR_BODY_LVER_ORIG]] ]83; CHECK-NEXT: br label %[[FOR_END:.*]]84; CHECK: [[FOR_END_LOOPEXIT2]]:85; CHECK-NEXT: [[SUM_ADD_LVER_PH3:%.*]] = phi i32 [ [[SUM_ADD]], %[[FOR_BODY]] ]86; CHECK-NEXT: br label %[[FOR_END]]87; CHECK: [[FOR_END]]:88; CHECK-NEXT: [[SUM_ADD_LVER:%.*]] = phi i32 [ [[SUM_ADD_LVER_PH]], %[[FOR_END_LOOPEXIT]] ], [ [[SUM_ADD_LVER_PH3]], %[[FOR_END_LOOPEXIT2]] ]89; CHECK-NEXT: store i32 [[SUM_ADD_LVER]], ptr @SUM, align 490; CHECK-NEXT: ret void91;92entry:93 %a = load ptr, ptr @A, align 894 %b = load ptr, ptr @B, align 895 %c = load ptr, ptr @C, align 896 %d = load ptr, ptr @D, align 897 %e = load ptr, ptr @E, align 898 99 br label %for.body100 101for.body: ; preds = %for.body, %entry102 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]103 %sum = phi i32 [ 0, %entry ], [ %sum_add, %for.body ]104 105 %arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind106 %loadA = load i32, ptr %arrayidxA, align 4107 108 %arrayidxB = getelementptr inbounds i32, ptr %b, i64 %ind109 %loadB = load i32, ptr %arrayidxB, align 4110 111 %mulA = mul i32 %loadB, %loadA112 113 %add = add nuw nsw i64 %ind, 1114 %arrayidxA_plus_4 = getelementptr inbounds i32, ptr %a, i64 %add115 store i32 %mulA, ptr %arrayidxA_plus_4, align 4116 117 %arrayidxC = getelementptr inbounds i32, ptr %c, i64 %ind118 %loadC = load i32, ptr %arrayidxC, align 4119 120 %sum_add = add nuw nsw i32 %sum, %loadC121 122 %exitcond = icmp eq i64 %add, 20123 br i1 %exitcond, label %for.end, label %for.body124 125for.end: ; preds = %for.body126 store i32 %sum_add, ptr @SUM, align 4127 ret void128}129;.130; CHECK: [[META0]] = !{[[META1:![0-9]+]]}131; CHECK: [[META1]] = distinct !{[[META1]], [[META2:![0-9]+]]}132; CHECK: [[META2]] = distinct !{[[META2]], !"LVerDomain"}133; CHECK: [[META3]] = !{[[META4:![0-9]+]]}134; CHECK: [[META4]] = distinct !{[[META4]], [[META2]]}135; CHECK: [[META5]] = !{[[META6:![0-9]+]]}136; CHECK: [[META6]] = distinct !{[[META6]], [[META2]]}137;.138