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51 lines
1.8 KiB
51 lines
1.8 KiB
; RUN: opt %loadPolly -polly-scops -analyze \
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; RUN: -polly-invariant-load-hoisting=true < %s | FileCheck %s
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;
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; void f(int *A, unsigned N) {
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; for (unsigned i = 0; i < N; i++)
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; A[i / 3] = A[5 * N / 3];
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; }
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;
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; CHECK: Invariant Accesses: {
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[o0] : -2 + 5N <= 3o0 <= 5N };
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; CHECK-NEXT: Execution Context: [N] -> { : 0 < N <= 1844674407370955161 }
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; CHECK-NEXT: }
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;
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; CHECK: Assumed Context:
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; CHECK-NEXT: [N] -> { : }
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; CHECK-NEXT: Invalid Context:
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; CHECK-NEXT: [N] -> { : N >= 1844674407370955162 }
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; CHECK: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[o0] : -2 + i0 <= 3o0 <= i0 };
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @f(i32* %A, i64 %N) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%exitcond = icmp ne i64 %indvars.iv, %N
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br i1 %exitcond, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%mul = mul nsw i64 %N, 5
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%div2 = udiv i64 %mul, 3
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%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %div2
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%load = load i32, i32* %arrayidx2, align 4
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%div = udiv i64 %indvars.iv, 3
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %div
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store i32 %load, i32* %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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