forked from OSchip/llvm-project
67 lines
2.2 KiB
LLVM
67 lines
2.2 KiB
LLVM
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; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
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;
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;
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; void foo(long n, float A[][n]) {
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; for (long i = 0; i < 100; i++)
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; for (long j = 0; j < n; j++)
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; A[i][j] += A[i][n - j - 1];
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; }
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;
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; Verify that the parameter in the subscript expression is correctly
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; recovered.
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;
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; CHECK: Assumed Context:
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; CHECK-NEXT: [n] -> { : }
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;
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; CHECK: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_for_body3[i0, i1] -> MemRef_A[i0, -1 + n - i1] };
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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 %n, float* %A) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc8, %entry
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%i.0 = phi i64 [ 0, %entry ], [ %inc9, %for.inc8 ]
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%exitcond = icmp ne i64 %i.0, 100
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br i1 %exitcond, label %for.body, label %for.end10
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for.body: ; preds = %for.cond
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br label %for.cond1
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for.cond1: ; preds = %for.inc, %for.body
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%j.0 = phi i64 [ 0, %for.body ], [ %inc, %for.inc ]
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%cmp2 = icmp slt i64 %j.0, %n
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br i1 %cmp2, label %for.body3, label %for.end
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for.body3: ; preds = %for.cond1
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%sub = sub nsw i64 %n, %j.0
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%sub4 = add nsw i64 %sub, -1
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%tmp = mul nsw i64 %i.0, %n
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%arrayidx.sum = add i64 %tmp, %sub4
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%arrayidx5 = getelementptr inbounds float, float* %A, i64 %arrayidx.sum
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%tmp1 = load float, float* %arrayidx5, align 4
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%tmp2 = mul nsw i64 %i.0, %n
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%arrayidx6.sum = add i64 %tmp2, %j.0
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%arrayidx7 = getelementptr inbounds float, float* %A, i64 %arrayidx6.sum
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%tmp3 = load float, float* %arrayidx7, align 4
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%add = fadd float %tmp3, %tmp1
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store float %add, float* %arrayidx7, align 4
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br label %for.inc
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for.inc: ; preds = %for.body3
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%inc = add nuw nsw i64 %j.0, 1
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br label %for.cond1
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for.end: ; preds = %for.cond1
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br label %for.inc8
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for.inc8: ; preds = %for.end
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%inc9 = add nuw nsw i64 %i.0, 1
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br label %for.cond
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for.end10: ; preds = %for.cond
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ret void
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}
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