1 files changed, 51 insertions, 0 deletions
diff --git a/test/Analysis/DependenceAnalysis/UsefulGEP.ll b/test/Analysis/DependenceAnalysis/UsefulGEP.ll
new file mode 100644
index 0000000..cd46a27
--- /dev/null
+++ b/test/Analysis/DependenceAnalysis/UsefulGEP.ll
@@ -0,0 +1,51 @@
+; RUN: opt < %s -analyze -basicaa -da
+;; Check this doesn't crash.
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+;; struct s {
+;;   int A[10][10];
+;;   int C[10][10][10]; 
+;; } S;
+
+;; void dep_constraint_crash_test(int k,int N) {
+;;   for( int i=0;i<N;i++)
+;;     for( int j=0;j<N;j++)
+;;       S.A[0][0] = S.C[0][0][k];
+;; }
+
+
+%struct.s = type { [10 x [10 x i32]], [10 x [10 x [10 x i32]]] }
+
+@S = common global %struct.s zeroinitializer
+
+define void @dep_constraint_crash_test(i32 %k, i32 %N) {
+entry:
+  %cmp12 = icmp sgt i32 %N, 0
+  br i1 %cmp12, label %for.cond1.preheader.lr.ph, label %for.end6
+
+for.cond1.preheader.lr.ph:                        
+  %idxprom = sext i32 %k to i64
+  %arrayidx = getelementptr inbounds %struct.s, %struct.s* @S, i64 0, i32 1, i64 0, i64 0, i64 %idxprom
+  br label %for.body3.preheader
+
+for.body3.preheader:                              
+  %i.013 = phi i32 [ 0, %for.cond1.preheader.lr.ph ], [ %inc5, %for.inc4 ]
+  br label %for.body3
+
+for.body3:                                        
+  %j.011 = phi i32 [ %inc, %for.body3 ], [ 0, %for.body3.preheader ]
+  %0 = load i32, i32* %arrayidx
+  store i32 %0, i32* getelementptr inbounds (%struct.s, %struct.s* @S, i64 0, i32 0, i64 0, i64 0)
+  %inc = add nuw nsw i32 %j.011, 1
+  %exitcond = icmp eq i32 %inc, %N
+  br i1 %exitcond, label %for.inc4, label %for.body3
+
+for.inc4:                                         
+  %inc5 = add nuw nsw i32 %i.013, 1
+  %exitcond14 = icmp eq i32 %inc5, %N
+  br i1 %exitcond14, label %for.end6, label %for.body3.preheader
+
+for.end6:                                         
+  ret void
+}