1 files changed, 86 insertions, 0 deletions
diff --git a/polly/test/Dependences/reduction_privatization_deps_2.ll b/polly/test/Dependences/reduction_privatization_deps_2.ll
new file mode 100644
index 00000000000..979b0ea3307
--- /dev/null
+++ b/polly/test/Dependences/reduction_privatization_deps_2.ll
@@ -0,0 +1,86 @@
+; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s
+;
+; We have privatization dependences from a textually later statement to a
+; textually earlier one, but the dependences still go forward in time.
+;
+;  CHECK: RAW dependences:
+;  CHECK-DAG:  Stmt_S3[i0] -> Stmt_S2[1 + i0, o1] : i0 <= 97 and i0 >= 0 and o1 <= 99 and o1 >= 0
+;  CHECK-DAG:  Stmt_S1[i0] -> Stmt_S3[i0] : i0 >= 0 and i0 <= 98
+;  CHECK: WAR dependences:
+;  CHECK:   {  }
+;  CHECK: WAW dependences:
+;  CHECK-DAG:  Stmt_S3[i0] -> Stmt_S2[1 + i0, o1] : i0 <= 97 and i0 >= 0 and o1 <= 99 and o1 >= 0
+;  CHECK-DAG:  Stmt_S1[i0] -> Stmt_S3[i0] : i0 >= 0 and i0 <= 98
+;  CHECK: Reduction dependences:
+;  CHECK:   { Stmt_S2[i0, i1] -> Stmt_S2[i0, 1 + i1] : i0 <= 98 and i0 >= 0 and i1 <= 98 and i1 >= 0 }
+;
+;    void f(int *sum) {
+;      int i, j;
+;      for (i = 0; i < 99; i++) {
+; S1:    sum[i + 1] += 42;
+;        for (j = 0; j < 100; j++)
+; S2:      sum[i] += i * j;
+; S3:    sum[i + 1] += 7;
+;      }
+;    }
+;
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
+
+define void @f(i32* %sum)  {
+entry:
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.inc10, %entry
+  %i.0 = phi i32 [ 0, %entry ], [ %inc11, %for.inc10 ]
+  %exitcond1 = icmp ne i32 %i.0, 99
+  br i1 %exitcond1, label %for.body, label %for.end12
+
+for.body:                                         ; preds = %for.cond
+  br label %S1
+
+S1:                                               ; preds = %for.body
+  %add = add nsw i32 %i.0, 1
+  %arrayidx = getelementptr inbounds i32* %sum, i32 %add
+  %tmp = load i32* %arrayidx, align 4
+  %add1 = add nsw i32 %tmp, 42
+  store i32 %add1, i32* %arrayidx, align 4
+  br label %for.cond2
+
+for.cond2:                                        ; preds = %for.inc, %S1
+  %j.0 = phi i32 [ 0, %S1 ], [ %inc, %for.inc ]
+  %exitcond = icmp ne i32 %j.0, 100
+  br i1 %exitcond, label %for.body4, label %for.end
+
+for.body4:                                        ; preds = %for.cond2
+  br label %S2
+
+S2:                                               ; preds = %for.body4
+  %mul = mul nsw i32 %i.0, %j.0
+  %arrayidx5 = getelementptr inbounds i32* %sum, i32 %i.0
+  %tmp2 = load i32* %arrayidx5, align 4
+  %add6 = add nsw i32 %tmp2, %mul
+  store i32 %add6, i32* %arrayidx5, align 4
+  br label %for.inc
+
+for.inc:                                          ; preds = %S2
+  %inc = add nsw i32 %j.0, 1
+  br label %for.cond2
+
+for.end:                                          ; preds = %for.cond2
+  br label %S3
+
+S3:                                               ; preds = %for.end
+  %add7 = add nsw i32 %i.0, 1
+  %arrayidx8 = getelementptr inbounds i32* %sum, i32 %add7
+  %tmp3 = load i32* %arrayidx8, align 4
+  %add9 = add nsw i32 %tmp3, 7
+  store i32 %add9, i32* %arrayidx8, align 4
+  br label %for.inc10
+
+for.inc10:                                        ; preds = %S3
+  %inc11 = add nsw i32 %i.0, 1
+  br label %for.cond
+
+for.end12:                                        ; preds = %for.cond
+  ret void
+}