1 files changed, 84 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/iv_outside_user.ll b/llvm/test/Transforms/LoopVectorize/iv_outside_user.ll
new file mode 100644
index 00000000000..dae159c098c
--- /dev/null
+++ b/llvm/test/Transforms/LoopVectorize/iv_outside_user.ll
@@ -0,0 +1,84 @@
+; RUN: opt -S -loop-vectorize -force-vector-interleave=1 -force-vector-width=2 < %s | FileCheck %s
+
+; CHECK-LABEL: @postinc
+; CHECK-LABEL: scalar.ph:
+; CHECK: %bc.resume.val = phi i32 [ %n.vec, %middle.block ], [ 0, %entry ]
+; CHECK-LABEL: for.end:
+; CHECK: %[[RET:.*]] = phi i32 [ {{.*}}, %for.body ], [ %n.vec, %middle.block ]
+; CHECK: ret i32 %[[RET]]
+define i32 @postinc(i32 %k)  {
+entry:
+  br label %for.body
+
+for.body:
+  %inc.phi = phi i32 [ 0, %entry ], [ %inc, %for.body ]
+  %inc = add nsw i32 %inc.phi, 1
+  %cmp = icmp eq i32 %inc, %k
+  br i1 %cmp, label %for.end, label %for.body
+
+for.end:
+  ret i32 %inc
+}
+
+; CHECK-LABEL: @preinc
+; CHECK-LABEL: middle.block:
+; CHECK: %3 = sub i32 %n.vec, 1
+; CHECK: %ind.escape = add i32 0, %3
+; CHECK-LABEL: scalar.ph:
+; CHECK: %bc.resume.val = phi i32 [ %n.vec, %middle.block ], [ 0, %entry ]
+; CHECK-LABEL: for.end:
+; CHECK: %[[RET:.*]] = phi i32 [ {{.*}}, %for.body ], [ %ind.escape, %middle.block ]
+; CHECK: ret i32 %[[RET]]
+define i32 @preinc(i32 %k)  {
+entry:
+  br label %for.body
+
+for.body:
+  %inc.phi = phi i32 [ 0, %entry ], [ %inc, %for.body ]
+  %inc = add nsw i32 %inc.phi, 1
+  %cmp = icmp eq i32 %inc, %k
+  br i1 %cmp, label %for.end, label %for.body
+
+for.end:
+  ret i32 %inc.phi
+}
+
+; CHECK-LABEL: @constpre
+; CHECK-LABEL: for.end:
+; CHECK: %[[RET:.*]] = phi i32 [ {{.*}}, %for.body ], [ 2, %middle.block ]
+; CHECK: ret i32 %[[RET]]
+define i32 @constpre()  {
+entry:
+  br label %for.body
+
+for.body:
+  %inc.phi = phi i32 [ 32, %entry ], [ %inc, %for.body ]
+  %inc = sub nsw i32 %inc.phi, 2
+  %cmp = icmp eq i32 %inc, 0
+  br i1 %cmp, label %for.end, label %for.body
+
+for.end:
+  ret i32 %inc.phi
+}
+
+; CHECK-LABEL: @geppre
+; CHECK-LABEL: middle.block:
+; CHECK: %ind.escape = getelementptr i32, i32* %ptr, i64 124
+; CHECK-LABEL: for.end:
+; CHECK: %[[RET:.*]] = phi i32* [ {{.*}}, %for.body ], [ %ind.escape, %middle.block ]
+; CHECK: ret i32* %[[RET]]
+define i32* @geppre(i32* %ptr) {
+entry:
+  br label %for.body
+
+for.body:
+  %inc.phi = phi i32 [ 0, %entry ], [ %inc, %for.body ]
+  %ptr.phi = phi i32* [ %ptr, %entry ], [ %inc.ptr, %for.body ]
+  %inc = add nsw i32 %inc.phi, 1
+  %inc.ptr = getelementptr i32, i32* %ptr.phi, i32 4
+  %cmp = icmp eq i32 %inc, 32
+  br i1 %cmp, label %for.end, label %for.body
+
+for.end:
+  ret i32* %ptr.phi
+}