forked from OSchip/llvm-project
38 lines
892 B
LLVM
38 lines
892 B
LLVM
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; RUN: opt %loadPolly -polly-scops -polly-simplify -analyze < %s | FileCheck %s
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;
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; The use of %sum.next by %phi counts as an escaping use.
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; Don't remove the scalar write of %sum.next.
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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 float @foo(float* %A) {
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entry:
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br label %header
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header:
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fence seq_cst
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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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%sum = phi float [ 0.0, %header ], [ %sum.next, %body ]
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%arrayidx = getelementptr float, float* %A, i64 %i
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%next = add nuw nsw i64 %i, 1
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%val = load float, float* %arrayidx
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%sum.next = fadd float %sum, %val
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%cond = icmp ne i64 %i, 100
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br i1 %cond, label %body, label %after
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after:
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br label %exit
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exit:
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%phi = phi float [%sum.next, %after], [0.0, %header]
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ret float %phi
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}
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; CHECK: Statistics {
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; CHECK: Dead accesses removed: 0
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; CHECK: }
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