forked from OSchip/llvm-project
61 lines
1.9 KiB
LLVM
61 lines
1.9 KiB
LLVM
; RUN: opt %loadPolly \
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; RUN: -polly-scops -analyze < %s | FileCheck %s
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; RUN: opt %loadPolly \
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; RUN: -S -polly-codegen < %s | FileCheck %s --check-prefix=CODEGEN
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;
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; CHECK: [N] -> { Stmt_bb11[i0, i1] : i0 < N and i1 >= 0 and 3i1 <= -3 + i0 };
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; CODEGEN: polly
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;
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; void f(int *A, int N) {
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; for (int i = 0; i < N; i++)
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; for (int j = 0; j < i / 3; j++)
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; A[i] += A[j];
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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) {
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bb:
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%tmp = sext i32 %N to i64
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br label %bb3
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bb3: ; preds = %bb19, %bb
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%indvars.iv1 = phi i64 [ %indvars.iv.next2, %bb19 ], [ 0, %bb ]
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%tmp4 = icmp slt i64 %indvars.iv1, %tmp
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br i1 %tmp4, label %bb5, label %bb20
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bb5: ; preds = %bb3
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br label %bb6
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bb6: ; preds = %bb17, %bb5
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%indvars.iv = phi i64 [ %indvars.iv.next, %bb17 ], [ 0, %bb5 ]
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%tmp7 = trunc i64 %indvars.iv1 to i32
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%tmp8 = sdiv i32 %tmp7, 3
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%tmp9 = sext i32 %tmp8 to i64
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%tmp10 = icmp slt i64 %indvars.iv, %tmp9
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br i1 %tmp10, label %bb11, label %bb18
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bb11: ; preds = %bb6
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%tmp12 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp13 = load i32, i32* %tmp12, align 4
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%tmp14 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv1
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%tmp15 = load i32, i32* %tmp14, align 4
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%tmp16 = add nsw i32 %tmp15, %tmp13
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store i32 %tmp16, i32* %tmp14, align 4
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br label %bb17
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bb17: ; preds = %bb11
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br label %bb6
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bb18: ; preds = %bb6
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br label %bb19
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bb19: ; preds = %bb18
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%indvars.iv.next2 = add nuw nsw i64 %indvars.iv1, 1
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br label %bb3
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bb20: ; preds = %bb3
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ret void
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}
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