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| ; RUN: opt %loadPolly -polly-process-unprofitable=false -polly-detect \
; RUN: -analyze < %s | FileCheck %s
;
; CHECK-NOT: Valid
;
; Do not consider this a SCoP as we do not perform any optimizations for
; loops with a small trip count.
;
; void f(int *A) {
; for (int i = 0; i < 4; i++)
; for (int j = 0; j < 4; j++)
; for (int k = 0; k < 4; k++)
; for (int l = 0; l < 4; l++)
; A[i] += A[i] * A[i - 1] + A[i + 1];
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc.24, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc.24 ], [ 0, %entry ]
%exitcond5 = icmp ne i64 %indvars.iv, 4
br i1 %exitcond5, label %for.body, label %for.end.26
for.body: ; preds = %for.cond
br label %for.cond.1
for.cond.1: ; preds = %for.inc.21, %for.body
%j.0 = phi i32 [ 0, %for.body ], [ %inc22, %for.inc.21 ]
%exitcond2 = icmp ne i32 %j.0, 4
br i1 %exitcond2, label %for.body.3, label %for.end.23
for.body.3: ; preds = %for.cond.1
br label %for.cond.4
for.cond.4: ; preds = %for.inc.18, %for.body.3
%k.0 = phi i32 [ 0, %for.body.3 ], [ %inc19, %for.inc.18 ]
%exitcond1 = icmp ne i32 %k.0, 4
br i1 %exitcond1, label %for.body.6, label %for.end.20
for.body.6: ; preds = %for.cond.4
br label %for.cond.7
for.cond.7: ; preds = %for.inc, %for.body.6
%l.0 = phi i32 [ 0, %for.body.6 ], [ %inc, %for.inc ]
%exitcond = icmp ne i32 %l.0, 4
br i1 %exitcond, label %for.body.9, label %for.end
for.body.9: ; preds = %for.cond.7
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp = load i32, i32* %arrayidx, align 4
%tmp6 = add nsw i64 %indvars.iv, -1
%arrayidx11 = getelementptr inbounds i32, i32* %A, i64 %tmp6
%tmp7 = load i32, i32* %arrayidx11, align 4
%mul = mul nsw i32 %tmp, %tmp7
%tmp8 = add nuw nsw i64 %indvars.iv, 1
%arrayidx13 = getelementptr inbounds i32, i32* %A, i64 %tmp8
%tmp9 = load i32, i32* %arrayidx13, align 4
%add14 = add nsw i32 %mul, %tmp9
%arrayidx16 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp10 = load i32, i32* %arrayidx16, align 4
%add17 = add nsw i32 %tmp10, %add14
store i32 %add17, i32* %arrayidx16, align 4
br label %for.inc
for.inc: ; preds = %for.body.9
%inc = add nuw nsw i32 %l.0, 1
br label %for.cond.7
for.end: ; preds = %for.cond.7
br label %for.inc.18
for.inc.18: ; preds = %for.end
%inc19 = add nuw nsw i32 %k.0, 1
br label %for.cond.4
for.end.20: ; preds = %for.cond.4
br label %for.inc.21
for.inc.21: ; preds = %for.end.20
%inc22 = add nuw nsw i32 %j.0, 1
br label %for.cond.1
for.end.23: ; preds = %for.cond.1
br label %for.inc.24
for.inc.24: ; preds = %for.end.23
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end.26: ; preds = %for.cond
ret void
}
|