1 files changed, 45 insertions, 0 deletions
diff --git a/test/Transforms/LoopVersioningLICM/loopversioningLICM3.ll b/test/Transforms/LoopVersioningLICM/loopversioningLICM3.ll
new file mode 100644
index 000000000000..8e39fa6ed0c1
--- /dev/null
+++ b/test/Transforms/LoopVersioningLICM/loopversioningLICM3.ll
@@ -0,0 +1,45 @@
+; RUN: opt < %s  -O1  -S -loop-versioning-licm -debug-only=loop-versioning-licm  2>&1 | FileCheck %s
+; REQUIRES: asserts
+;
+; Test to confirm loop is not a candidate for LoopVersioningLICM.
+;
+; CHECK: Loop: Loop at depth 2 containing: %for.body3<header><latch><exiting>
+; CHECK-NEXT:    LAA: Runtime check not found !!
+; CHECK-NEXT:    Loop instructions not suitable for LoopVersioningLICM
+
+define i32 @foo(i32* nocapture %var1, i32 %itr) #0 {
+entry:
+  %cmp18 = icmp eq i32 %itr, 0
+  br i1 %cmp18, label %for.end8, label %for.cond1.preheader
+
+for.cond1.preheader:                              ; preds = %entry, %for.inc6
+  %j.020 = phi i32 [ %j.1.lcssa, %for.inc6 ], [ 0, %entry ]
+  %i.019 = phi i32 [ %inc7, %for.inc6 ], [ 0, %entry ]
+  %cmp216 = icmp ult i32 %j.020, %itr
+  br i1 %cmp216, label %for.body3.lr.ph, label %for.inc6
+
+for.body3.lr.ph:                                  ; preds = %for.cond1.preheader
+  %0 = zext i32 %j.020 to i64
+  br label %for.body3
+
+for.body3:                                        ; preds = %for.body3, %for.body3.lr.ph
+  %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ]
+  %arrayidx = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv
+  %1 = load i32, i32* %arrayidx, align 4
+  %add = add nsw i32 %1, %itr
+  store i32 %add, i32* %arrayidx, align 4
+  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
+  %exitcond = icmp eq i32 %lftr.wideiv, %itr
+  br i1 %exitcond, label %for.inc6, label %for.body3
+
+for.inc6:                                         ; preds = %for.body3, %for.cond1.preheader
+  %j.1.lcssa = phi i32 [ %j.020, %for.cond1.preheader ], [ %itr, %for.body3 ]
+  %inc7 = add nuw i32 %i.019, 1
+  %exitcond21 = icmp eq i32 %inc7, %itr
+  br i1 %exitcond21, label %for.end8, label %for.cond1.preheader
+
+for.end8:                                         ; preds = %for.inc6, %entry
+  ret i32 0
+}
+