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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 | FileCheck %s3 4; If we can't find the bounds for one of the arrays in order to generate the5; memchecks (e.g., C[i * i] below), loop shold not get distributed.6;7; for (i = 0; i < n; i++) {8; A[i + 1] = A[i] * 3;9; -------------------------------10; C[i * i] = B[i] * 2;11; }12 13; Verify that we didn't distribute by checking that we still have the original14; number of branches.15 16@A = common global ptr null, align 817@B = common global ptr null, align 818@C = common global ptr null, align 819 20define void @f() {21; CHECK-LABEL: define void @f() {22; CHECK-NEXT: [[ENTRY:.*]]:23; CHECK-NEXT: [[A:%.*]] = load ptr, ptr @A, align 824; CHECK-NEXT: [[B:%.*]] = load ptr, ptr @B, align 825; CHECK-NEXT: [[C:%.*]] = load ptr, ptr @C, align 826; CHECK-NEXT: br label %[[FOR_BODY:.*]]27; CHECK: [[FOR_BODY]]:28; CHECK-NEXT: [[IND:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]29; CHECK-NEXT: [[ARRAYIDXA:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IND]]30; CHECK-NEXT: [[LOADA:%.*]] = load i32, ptr [[ARRAYIDXA]], align 431; CHECK-NEXT: [[MULA:%.*]] = mul i32 [[LOADA]], 332; CHECK-NEXT: [[ADD]] = add nuw nsw i64 [[IND]], 133; CHECK-NEXT: [[ARRAYIDXA_PLUS_4:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[ADD]]34; CHECK-NEXT: store i32 [[MULA]], ptr [[ARRAYIDXA_PLUS_4]], align 435; CHECK-NEXT: [[ARRAYIDXB:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IND]]36; CHECK-NEXT: [[LOADB:%.*]] = load i32, ptr [[ARRAYIDXB]], align 437; CHECK-NEXT: [[MULC:%.*]] = mul i32 [[LOADB]], 238; CHECK-NEXT: [[IND_2:%.*]] = mul i64 [[IND]], [[IND]]39; CHECK-NEXT: [[ARRAYIDXC:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IND_2]]40; CHECK-NEXT: store i32 [[MULC]], ptr [[ARRAYIDXC]], align 441; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[ADD]], 2042; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_END:.*]], label %[[FOR_BODY]]43; CHECK: [[FOR_END]]:44; CHECK-NEXT: ret void45;46entry:47 %a = load ptr, ptr @A, align 848 %b = load ptr, ptr @B, align 849 %c = load ptr, ptr @C, align 850 br label %for.body51 52for.body: ; preds = %for.body, %entry53 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]54 55 %arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind56 %loadA = load i32, ptr %arrayidxA, align 457 58 %mulA = mul i32 %loadA, 359 60 %add = add nuw nsw i64 %ind, 161 %arrayidxA_plus_4 = getelementptr inbounds i32, ptr %a, i64 %add62 store i32 %mulA, ptr %arrayidxA_plus_4, align 463 64 %arrayidxB = getelementptr inbounds i32, ptr %b, i64 %ind65 %loadB = load i32, ptr %arrayidxB, align 466 67 %mulC = mul i32 %loadB, 268 69 %ind_2 = mul i64 %ind, %ind70 %arrayidxC = getelementptr inbounds i32, ptr %c, i64 %ind_271 store i32 %mulC, ptr %arrayidxC, align 472 73 %exitcond = icmp eq i64 %add, 2074 br i1 %exitcond, label %for.end, label %for.body75 76for.end: ; preds = %for.body77 ret void78}79