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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes=loop-distribute -enable-loop-distribute \3; RUN: -verify-loop-info -verify-dom-info -S < %s | FileCheck %s4 5; Derived from crash-in-memcheck-generation.ll6 7; Make sure the loop is distributed even with a convergent8; op. LoopAccessAnalysis says that runtime checks are necessary, but9; none are cross partition, so none are truly needed.10 11define void @f(ptr %a, ptr %b, ptr noalias %c, ptr noalias %d, ptr noalias %e) #1 {12; CHECK-LABEL: @f(13; CHECK-NEXT: entry:14; CHECK-NEXT: br label [[ENTRY_SPLIT_LDIST1:%.*]]15; CHECK: entry.split.ldist1:16; CHECK-NEXT: br label [[FOR_BODY_LDIST1:%.*]]17; CHECK: for.body.ldist1:18; CHECK-NEXT: [[IND_LDIST1:%.*]] = phi i64 [ 0, [[ENTRY_SPLIT_LDIST1]] ], [ [[ADD_LDIST1:%.*]], [[FOR_BODY_LDIST1]] ]19; CHECK-NEXT: [[ARRAYIDXA_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[IND_LDIST1]]20; CHECK-NEXT: [[LOADA_LDIST1:%.*]] = load i32, ptr [[ARRAYIDXA_LDIST1]], align 421; CHECK-NEXT: [[ARRAYIDXB_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[B:%.*]], i64 [[IND_LDIST1]]22; CHECK-NEXT: [[LOADB_LDIST1:%.*]] = load i32, ptr [[ARRAYIDXB_LDIST1]], align 423; CHECK-NEXT: [[MULA_LDIST1:%.*]] = mul i32 [[LOADB_LDIST1]], [[LOADA_LDIST1]]24; CHECK-NEXT: [[ADD_LDIST1]] = add nuw nsw i64 [[IND_LDIST1]], 125; CHECK-NEXT: [[ARRAYIDXA_PLUS_4_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[ADD_LDIST1]]26; CHECK-NEXT: store i32 [[MULA_LDIST1]], ptr [[ARRAYIDXA_PLUS_4_LDIST1]], align 427; CHECK-NEXT: [[EXITCOND_LDIST1:%.*]] = icmp eq i64 [[ADD_LDIST1]], 2028; CHECK-NEXT: br i1 [[EXITCOND_LDIST1]], label [[ENTRY_SPLIT:%.*]], label [[FOR_BODY_LDIST1]]29; CHECK: entry.split:30; CHECK-NEXT: br label [[FOR_BODY:%.*]]31; CHECK: for.body:32; CHECK-NEXT: [[IND:%.*]] = phi i64 [ 0, [[ENTRY_SPLIT]] ], [ [[ADD:%.*]], [[FOR_BODY]] ]33; CHECK-NEXT: [[ADD]] = add nuw nsw i64 [[IND]], 134; CHECK-NEXT: [[ARRAYIDXD:%.*]] = getelementptr inbounds i32, ptr [[D:%.*]], i64 [[IND]]35; CHECK-NEXT: [[LOADD:%.*]] = load i32, ptr [[ARRAYIDXD]], align 436; CHECK-NEXT: [[CONVERGENTD:%.*]] = call i32 @llvm.convergent(i32 [[LOADD]])37; CHECK-NEXT: [[ARRAYIDXE:%.*]] = getelementptr inbounds i32, ptr [[E:%.*]], i64 [[IND]]38; CHECK-NEXT: [[LOADE:%.*]] = load i32, ptr [[ARRAYIDXE]], align 439; CHECK-NEXT: [[MULC:%.*]] = mul i32 [[CONVERGENTD]], [[LOADE]]40; CHECK-NEXT: [[ARRAYIDXC:%.*]] = getelementptr inbounds i32, ptr [[C:%.*]], i64 [[IND]]41; CHECK-NEXT: store i32 [[MULC]], ptr [[ARRAYIDXC]], align 442; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[ADD]], 2043; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END:%.*]], label [[FOR_BODY]]44; CHECK: for.end:45; CHECK-NEXT: ret void46;47entry:48 br label %for.body49 50for.body: ; preds = %for.body, %entry51 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]52 53 %arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind54 %loadA = load i32, ptr %arrayidxA, align 455 56 %arrayidxB = getelementptr inbounds i32, ptr %b, i64 %ind57 %loadB = load i32, ptr %arrayidxB, align 458 59 %mulA = mul i32 %loadB, %loadA60 61 %add = add nuw nsw i64 %ind, 162 %arrayidxA_plus_4 = getelementptr inbounds i32, ptr %a, i64 %add63 store i32 %mulA, ptr %arrayidxA_plus_4, align 464 65 %arrayidxD = getelementptr inbounds i32, ptr %d, i64 %ind66 %loadD = load i32, ptr %arrayidxD, align 467 %convergentD = call i32 @llvm.convergent(i32 %loadD)68 69 %arrayidxE = getelementptr inbounds i32, ptr %e, i64 %ind70 %loadE = load i32, ptr %arrayidxE, align 471 72 %mulC = mul i32 %convergentD, %loadE73 74 %arrayidxC = getelementptr inbounds i32, ptr %c, i64 %ind75 store i32 %mulC, ptr %arrayidxC, align 476 77 %exitcond = icmp eq i64 %add, 2078 br i1 %exitcond, label %for.end, label %for.body79 80for.end: ; preds = %for.body81 ret void82}83 84declare i32 @llvm.convergent(i32) #085 86attributes #0 = { nounwind readnone convergent }87attributes #1 = { nounwind convergent }88