forked from OSchip/llvm-project
69 lines
2.5 KiB
LLVM
69 lines
2.5 KiB
LLVM
; RUN: opt %loadPolly -basic-aa -loop-rotate -indvars -polly-prepare -polly-scops -analyze < %s | FileCheck %s
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; RUN: opt %loadPolly -basic-aa -loop-rotate -indvars -licm -polly-prepare -polly-scops -analyze < %s | FileCheck %s
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;
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; XFAIL: *
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;
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; Even ScopDetection fails here after LICM because of PHI in exit node.
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;
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; void foo(unsigned long *restrict A, unsigned long *restrict B,
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; unsigned long j) {
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; for (unsigned long i = 0; i < 100; i++)
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; for (unsigned long k = 0; k < 100; k++)
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; A[j] += B[i + k];
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; }
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @foo(i64* noalias %A, i64* noalias %B, i64 %j) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc.6, %entry
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%i.0 = phi i64 [ 0, %entry ], [ %inc7, %for.inc.6 ]
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%exitcond1 = icmp ne i64 %i.0, 100
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br i1 %exitcond1, label %for.body, label %for.end.8
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for.body: ; preds = %for.cond
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br label %for.cond.1
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for.cond.1: ; preds = %for.inc, %for.body
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%k.0 = phi i64 [ 0, %for.body ], [ %inc, %for.inc ]
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%exitcond = icmp ne i64 %k.0, 100
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br i1 %exitcond, label %for.body.3, label %for.end
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for.body.3: ; preds = %for.cond.1
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%add = add nuw nsw i64 %i.0, %k.0
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%arrayidx = getelementptr inbounds i64, i64* %B, i64 %add
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%tmp = load i64, i64* %arrayidx, align 8
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%arrayidx4 = getelementptr inbounds i64, i64* %A, i64 %j
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%tmp2 = load i64, i64* %arrayidx4, align 8
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%add5 = add i64 %tmp2, %tmp
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store i64 %add5, i64* %arrayidx4, align 8
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br label %for.inc
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for.inc: ; preds = %for.body.3
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%inc = add nuw nsw i64 %k.0, 1
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br label %for.cond.1
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for.end: ; preds = %for.cond.1
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br label %for.inc.6
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for.inc.6: ; preds = %for.end
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%inc7 = add nuw nsw i64 %i.0, 1
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br label %for.cond
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for.end.8: ; preds = %for.cond
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ret void
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}
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; CHECK: Statements {
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; CHECK: Stmt_for_body_3
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; CHECK-DAG: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [j] -> { Stmt_for_body_3[i0, i1] -> MemRef_B[i0 + i1] };
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; CHECK-DAG: ReadAccess := [Reduction Type: +] [Scalar: 0]
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; CHECK-NEXT: [j] -> { Stmt_for_body_3[i0, i1] -> MemRef_A[j] };
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; CHECK-DAG: MustWriteAccess := [Reduction Type: +] [Scalar: 0]
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; CHECK-NEXT: [j] -> { Stmt_for_body_3[i0, i1] -> MemRef_A[j] };
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; CHECK: }
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