forked from OSchip/llvm-project
45 lines
1.5 KiB
LLVM
45 lines
1.5 KiB
LLVM
; RUN: opt %loadPolly -disable-output -polly-print-scops < %s | FileCheck %s
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; RUN: opt %loadPolly -disable-output -polly-print-function-scops < %s | FileCheck %s
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;
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; Check that the constant part of the N * M * 4 expression is not part of the
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; parameter but explicit in the access function. This can avoid existentially
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; quantified variables, e.g., when computing the stride.
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;
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; CHECK: p1: (%N * %M)
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; CHECK: [N, p_1] -> { Stmt_for_body[i0] -> MemRef_A[4p_1 + i0] };
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;
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; void f(int *A, int N, int M) {
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; for (int i = 0; i < N; i++)
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; A[i + N * M * 4] = i;
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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 @f(i32* %A, i32 %N, i32 %M) {
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entry:
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%tmp = sext i32 %N to i64
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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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%cmp = icmp slt i64 %indvars.iv, %tmp
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%mul = mul nsw i32 %N, %M
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%mul2 = mul nsw i32 %mul, 4
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%tmp2 = sext i32 %mul2 to i64
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%tmp3 = add nsw i64 %indvars.iv, %tmp2
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %tmp3
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%tmp4 = trunc i64 %indvars.iv to i32
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store i32 %tmp4, 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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