79 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 52; RUN: opt -passes=loop-distribute -enable-loop-distribute -S -verify-loop-info -verify-dom-info < %s \3; RUN: | FileCheck %s4 5; Distributing this loop to avoid the dependence cycle would require to6; reorder S1 and S2 to form the two partitions: {S2} | {S1, S3}. The analysis7; provided by LoopAccessAnalysis does not allow us to reorder memory8; operations so make sure we bail on this loop.9;10; for (i = 0; i < n; i++) {11; S1: d = D[i];12; S2: A[i + 1] = A[i] * B[i];13; S3: C[i] = d * E[i];14; }15 16define void @f(ptr noalias %a, ptr noalias %b, ptr noalias %c, ptr noalias %d, ptr noalias %e) {17; CHECK-LABEL: define void @f(18; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], ptr noalias [[C:%.*]], ptr noalias [[D:%.*]], ptr noalias [[E:%.*]]) {19; CHECK-NEXT: [[ENTRY:.*]]:20; CHECK-NEXT: br label %[[FOR_BODY:.*]]21; CHECK: [[FOR_BODY]]:22; CHECK-NEXT: [[IND:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]23; CHECK-NEXT: [[ARRAYIDXA:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IND]]24; CHECK-NEXT: [[LOADA:%.*]] = load i32, ptr [[ARRAYIDXA]], align 425; CHECK-NEXT: [[ARRAYIDXB:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IND]]26; CHECK-NEXT: [[LOADB:%.*]] = load i32, ptr [[ARRAYIDXB]], align 427; CHECK-NEXT: [[MULA:%.*]] = mul i32 [[LOADB]], [[LOADA]]28; CHECK-NEXT: [[ARRAYIDXD:%.*]] = getelementptr inbounds i32, ptr [[D]], i64 [[IND]]29; CHECK-NEXT: [[LOADD:%.*]] = load i32, ptr [[ARRAYIDXD]], align 430; CHECK-NEXT: [[ADD]] = add nuw nsw i64 [[IND]], 131; CHECK-NEXT: [[ARRAYIDXA_PLUS_4:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[ADD]]32; CHECK-NEXT: store i32 [[MULA]], ptr [[ARRAYIDXA_PLUS_4]], align 433; CHECK-NEXT: [[ARRAYIDXC:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IND]]34; CHECK-NEXT: [[ARRAYIDXE:%.*]] = getelementptr inbounds i32, ptr [[E]], i64 [[IND]]35; CHECK-NEXT: [[LOADE:%.*]] = load i32, ptr [[ARRAYIDXE]], align 436; CHECK-NEXT: [[MULC:%.*]] = mul i32 [[LOADD]], [[LOADE]]37; CHECK-NEXT: store i32 [[MULC]], ptr [[ARRAYIDXC]], align 438; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[ADD]], 2039; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_END:.*]], label %[[FOR_BODY]]40; CHECK: [[FOR_END]]:41; CHECK-NEXT: ret void42;43entry:44 br label %for.body45 46for.body: ; preds = %for.body, %entry47 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]48 49 %arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind50 %loadA = load i32, ptr %arrayidxA, align 451 52 %arrayidxB = getelementptr inbounds i32, ptr %b, i64 %ind53 %loadB = load i32, ptr %arrayidxB, align 454 55 %mulA = mul i32 %loadB, %loadA56 57 %arrayidxD = getelementptr inbounds i32, ptr %d, i64 %ind58 %loadD = load i32, ptr %arrayidxD, align 459 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 %arrayidxC = getelementptr inbounds i32, ptr %c, i64 %ind65 66 %arrayidxE = getelementptr inbounds i32, ptr %e, i64 %ind67 %loadE = load i32, ptr %arrayidxE, align 468 69 %mulC = mul i32 %loadD, %loadE70 71 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