88 lines
4.0 KiB
LLVM
88 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -basicaa -loop-distribute -enable-loop-distribute \
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; RUN: -verify-loop-info -verify-dom-info -S < %s | FileCheck %s
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; Derived from crash-in-memcheck-generation.ll
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; Make sure the loop is distributed even with a convergent
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; op. LoopAccessAnalysis says that runtime checks are necessary, but
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; none are cross partition, so none are truly needed.
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define void @f(i32* %a, i32* %b, i32* noalias %c, i32* noalias %d, i32* noalias %e) #1 {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[ENTRY_SPLIT_LDIST1:%.*]]
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; CHECK: entry.split.ldist1:
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; CHECK-NEXT: br label [[FOR_BODY_LDIST1:%.*]]
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; CHECK: for.body.ldist1:
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; CHECK-NEXT: [[IND_LDIST1:%.*]] = phi i64 [ 0, [[ENTRY_SPLIT_LDIST1]] ], [ [[ADD_LDIST1:%.*]], [[FOR_BODY_LDIST1]] ]
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; CHECK-NEXT: [[ARRAYIDXA_LDIST1:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[IND_LDIST1]]
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; CHECK-NEXT: [[LOADA_LDIST1:%.*]] = load i32, i32* [[ARRAYIDXA_LDIST1]], align 4
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; CHECK-NEXT: [[ARRAYIDXB_LDIST1:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[IND_LDIST1]]
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; CHECK-NEXT: [[LOADB_LDIST1:%.*]] = load i32, i32* [[ARRAYIDXB_LDIST1]], align 4
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; CHECK-NEXT: [[MULA_LDIST1:%.*]] = mul i32 [[LOADB_LDIST1]], [[LOADA_LDIST1]]
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; CHECK-NEXT: [[ADD_LDIST1]] = add nuw nsw i64 [[IND_LDIST1]], 1
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; CHECK-NEXT: [[ARRAYIDXA_PLUS_4_LDIST1:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[ADD_LDIST1]]
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; CHECK-NEXT: store i32 [[MULA_LDIST1]], i32* [[ARRAYIDXA_PLUS_4_LDIST1]], align 4
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; CHECK-NEXT: [[EXITCOND_LDIST1:%.*]] = icmp eq i64 [[ADD_LDIST1]], 20
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; CHECK-NEXT: br i1 [[EXITCOND_LDIST1]], label [[ENTRY_SPLIT:%.*]], label [[FOR_BODY_LDIST1]]
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; CHECK: entry.split:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[IND:%.*]] = phi i64 [ 0, [[ENTRY_SPLIT]] ], [ [[ADD:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[ADD]] = add nuw nsw i64 [[IND]], 1
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; CHECK-NEXT: [[ARRAYIDXD:%.*]] = getelementptr inbounds i32, i32* [[D:%.*]], i64 [[IND]]
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; CHECK-NEXT: [[LOADD:%.*]] = load i32, i32* [[ARRAYIDXD]], align 4
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; CHECK-NEXT: [[CONVERGENTD:%.*]] = call i32 @llvm.convergent(i32 [[LOADD]])
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; CHECK-NEXT: [[ARRAYIDXE:%.*]] = getelementptr inbounds i32, i32* [[E:%.*]], i64 [[IND]]
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; CHECK-NEXT: [[LOADE:%.*]] = load i32, i32* [[ARRAYIDXE]], align 4
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; CHECK-NEXT: [[MULC:%.*]] = mul i32 [[CONVERGENTD]], [[LOADE]]
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; CHECK-NEXT: [[ARRAYIDXC:%.*]] = getelementptr inbounds i32, i32* [[C:%.*]], i64 [[IND]]
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; CHECK-NEXT: store i32 [[MULC]], i32* [[ARRAYIDXC]], align 4
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[ADD]], 20
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END:%.*]], label [[FOR_BODY]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
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%arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
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%loadA = load i32, i32* %arrayidxA, align 4
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%arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
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%loadB = load i32, i32* %arrayidxB, align 4
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%mulA = mul i32 %loadB, %loadA
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%add = add nuw nsw i64 %ind, 1
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%arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add
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store i32 %mulA, i32* %arrayidxA_plus_4, align 4
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%arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind
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%loadD = load i32, i32* %arrayidxD, align 4
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%convergentD = call i32 @llvm.convergent(i32 %loadD)
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%arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind
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%loadE = load i32, i32* %arrayidxE, align 4
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%mulC = mul i32 %convergentD, %loadE
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%arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
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store i32 %mulC, i32* %arrayidxC, align 4
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%exitcond = icmp eq i64 %add, 20
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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}
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declare i32 @llvm.convergent(i32) #0
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attributes #0 = { nounwind readnone convergent }
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attributes #1 = { nounwind convergent }
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