forked from OSchip/llvm-project
97 lines
3.4 KiB
LLVM
97 lines
3.4 KiB
LLVM
; RUN: opt %loadPolly -polly-process-unprofitable=false -polly-detect \
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; RUN: -analyze < %s | FileCheck %s
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;
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; CHECK-NOT: Valid
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;
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; Do not consider this a SCoP as we do not perform any optimizations for
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; loops with a small trip count.
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;
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; void f(int *A) {
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; for (int i = 0; i < 4; i++)
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; for (int j = 0; j < 4; j++)
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; for (int k = 0; k < 4; k++)
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; for (int l = 0; l < 4; l++)
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; A[i] += A[i] * A[i - 1] + A[i + 1];
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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) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc.24, %entry
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc.24 ], [ 0, %entry ]
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%exitcond5 = icmp ne i64 %indvars.iv, 4
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br i1 %exitcond5, label %for.body, label %for.end.26
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for.body: ; preds = %for.cond
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br label %for.cond.1
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for.cond.1: ; preds = %for.inc.21, %for.body
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%j.0 = phi i32 [ 0, %for.body ], [ %inc22, %for.inc.21 ]
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%exitcond2 = icmp ne i32 %j.0, 4
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br i1 %exitcond2, label %for.body.3, label %for.end.23
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for.body.3: ; preds = %for.cond.1
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br label %for.cond.4
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for.cond.4: ; preds = %for.inc.18, %for.body.3
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%k.0 = phi i32 [ 0, %for.body.3 ], [ %inc19, %for.inc.18 ]
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%exitcond1 = icmp ne i32 %k.0, 4
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br i1 %exitcond1, label %for.body.6, label %for.end.20
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for.body.6: ; preds = %for.cond.4
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br label %for.cond.7
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for.cond.7: ; preds = %for.inc, %for.body.6
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%l.0 = phi i32 [ 0, %for.body.6 ], [ %inc, %for.inc ]
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%exitcond = icmp ne i32 %l.0, 4
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br i1 %exitcond, label %for.body.9, label %for.end
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for.body.9: ; preds = %for.cond.7
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp = load i32, i32* %arrayidx, align 4
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%tmp6 = add nsw i64 %indvars.iv, -1
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%arrayidx11 = getelementptr inbounds i32, i32* %A, i64 %tmp6
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%tmp7 = load i32, i32* %arrayidx11, align 4
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%mul = mul nsw i32 %tmp, %tmp7
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%tmp8 = add nuw nsw i64 %indvars.iv, 1
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%arrayidx13 = getelementptr inbounds i32, i32* %A, i64 %tmp8
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%tmp9 = load i32, i32* %arrayidx13, align 4
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%add14 = add nsw i32 %mul, %tmp9
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%arrayidx16 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp10 = load i32, i32* %arrayidx16, align 4
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%add17 = add nsw i32 %tmp10, %add14
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store i32 %add17, i32* %arrayidx16, align 4
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br label %for.inc
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for.inc: ; preds = %for.body.9
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%inc = add nuw nsw i32 %l.0, 1
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br label %for.cond.7
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for.end: ; preds = %for.cond.7
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br label %for.inc.18
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for.inc.18: ; preds = %for.end
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%inc19 = add nuw nsw i32 %k.0, 1
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br label %for.cond.4
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for.end.20: ; preds = %for.cond.4
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br label %for.inc.21
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for.inc.21: ; preds = %for.end.20
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%inc22 = add nuw nsw i32 %j.0, 1
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br label %for.cond.1
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for.end.23: ; preds = %for.cond.1
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br label %for.inc.24
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for.inc.24: ; preds = %for.end.23
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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.26: ; preds = %for.cond
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ret void
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}
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