forked from OSchip/llvm-project
73 lines
2.9 KiB
LLVM
73 lines
2.9 KiB
LLVM
; RUN: opt %loadPolly -basic-aa -polly-stmt-granularity=bb -polly-ast -polly-ast-detect-parallel -analyze < %s | FileCheck %s
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; RUN: opt %loadPolly -polly-stmt-granularity=bb -polyhedral-info -polly-check-parallel -analyze < %s | FileCheck %s -check-prefix=PINFO
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;
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; void f(int *restrict A, int *restrict B, int *restrict C, int *restrict D,
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; int *restrict E, int N) {
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; CHECK: #pragma minimal dependence distance: N >= 35 ? 1 : N >= 17 && N <= 34 ? 2 : 5
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; PINFO: for.cond: Loop is not parallel.
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; for (int i = 0; i < N; i++) {
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; A[i] = A[100 - 2 * i] + 1;
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; B[i] = B[100 - 3 * i] + 1;
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; C[i] = C[100 - 4 * i] + 1;
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; D[i] = D[100 - 5 * i] + 1;
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; E[i] = E[100 - 6 * i] + 1;
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; }
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; }
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;
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
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define void @f(i32* noalias %A, i32* noalias %B, i32* noalias %C, i32* noalias %D, i32* noalias %E, i32 %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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%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
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%cmp = icmp slt i32 %i.0, %N
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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 = shl nsw i32 %i.0, 1
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%sub = sub nsw i32 100, %mul
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%arrayidx = getelementptr inbounds i32, i32* %A, i32 %sub
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%tmp = load i32, i32* %arrayidx, align 4
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%add = add nsw i32 %tmp, 1
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%arrayidx1 = getelementptr inbounds i32, i32* %A, i32 %i.0
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store i32 %add, i32* %arrayidx1, align 4
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%tmp1 = mul i32 %i.0, -3
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%sub3 = add i32 %tmp1, 100
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%arrayidx4 = getelementptr inbounds i32, i32* %B, i32 %sub3
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%tmp2 = load i32, i32* %arrayidx4, align 4
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%add5 = add nsw i32 %tmp2, 1
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%arrayidx6 = getelementptr inbounds i32, i32* %B, i32 %i.0
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store i32 %add5, i32* %arrayidx6, align 4
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%mul7 = shl nsw i32 %i.0, 2
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%sub8 = sub nsw i32 100, %mul7
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%arrayidx9 = getelementptr inbounds i32, i32* %C, i32 %sub8
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%tmp3 = load i32, i32* %arrayidx9, align 4
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%add10 = add nsw i32 %tmp3, 1
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%arrayidx11 = getelementptr inbounds i32, i32* %C, i32 %i.0
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store i32 %add10, i32* %arrayidx11, align 4
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%tmp4 = mul i32 %i.0, -5
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%sub13 = add i32 %tmp4, 100
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%arrayidx14 = getelementptr inbounds i32, i32* %D, i32 %sub13
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%tmp5 = load i32, i32* %arrayidx14, align 4
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%add15 = add nsw i32 %tmp5, 1
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%arrayidx16 = getelementptr inbounds i32, i32* %D, i32 %i.0
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store i32 %add15, i32* %arrayidx16, align 4
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%tmp6 = mul i32 %i.0, -6
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%sub18 = add i32 %tmp6, 100
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%arrayidx19 = getelementptr inbounds i32, i32* %E, i32 %sub18
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%tmp7 = load i32, i32* %arrayidx19, align 4
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%add20 = add nsw i32 %tmp7, 1
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%arrayidx21 = getelementptr inbounds i32, i32* %E, i32 %i.0
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store i32 %add20, i32* %arrayidx21, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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%inc = add nsw i32 %i.0, 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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