Vectorizer: fix a bug in the classification of induction/reduction phis.

llvm-svn: 166384

1 files changed, 15 insertions, 0 deletions

diff --git a/llvm/test/Transforms/LoopVectorize/2012-10-20-infloop.ll b/llvm/test/Transforms/LoopVectorize/2012-10-20-infloop.ll
index 16a77291995..5caaffc8dde 100644
--- a/llvm/test/Transforms/LoopVectorize/2012-10-20-infloop.ll
+++ b/llvm/test/Transforms/LoopVectorize/2012-10-20-infloop.ll
@@ -10,3 +10,18 @@ for.body:
  br label %for.body
 }
 
+
+
+define void @test2() nounwind {
+entry:
+ br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+ %indvars.iv47 = phi i64 [ 0, %entry ], [ %indvars.iv.next48, %for.body ]
+ %0 = phi i32 [ 1, %entry ], [ 0, %for.body ]
+ %indvars.iv.next48 = add i64 %indvars.iv47, 1
+ br i1 undef, label %for.end, label %for.body
+
+for.end:                                          ; preds = %for.body
+ unreachable
+}