forked from OSchip/llvm-project
46 lines
1.4 KiB
LLVM
46 lines
1.4 KiB
LLVM
; RUN: opt %loadPolly -analyze -polly-scops %s | FileCheck %s
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; Check that PHI nodes only create PHI access and nothing else (e.g. unnecessary
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; SCALAR accesses). In this case, for a PHI in the exit node, hence there is no
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; PHI ReadAccess.
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; CHECK-LABEL: Function: foo
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;
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; CHECK: Statements {
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; CHECK-NEXT: Stmt_header
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: { Stmt_header[] };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: { Stmt_header[] -> [0, 0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_header[] -> MemRef_phi[] };
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; CHECK-NEXT: Stmt_body
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: { Stmt_body[i0] : 0 <= i0 <= 100 };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: { Stmt_body[i0] -> [1, i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_body[i0] -> MemRef_phi[] };
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; CHECK-NEXT: }
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define float @foo(float %sum, float* %A) {
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entry:
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br label %header
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header:
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br i1 true, label %body, label %exit
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body:
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%i = phi i64 [ 0, %header ], [ %next, %body ]
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%scalar = fadd float 0.0, 0.0
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%next = add nuw nsw i64 %i, 1
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%cond = icmp ne i64 %i, 100
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br i1 %cond, label %body, label %exit
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exit:
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%phi = phi float [%scalar, %body], [0.0, %header]
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ret float %phi
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}
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