1 files changed, 38 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/pr12048.ll b/test/Transforms/LoopStrengthReduce/pr12048.ll
new file mode 100644
index 0000000..7e0f2ad
--- /dev/null
+++ b/test/Transforms/LoopStrengthReduce/pr12048.ll
@@ -0,0 +1,38 @@
+; RUN: opt < %s -loop-reduce
+
+define void @resolve_name() nounwind uwtable ssp {
+  br label %while.cond40.preheader
+while.cond132.while.cond.loopexit_crit_edge:
+  br label %while.cond40.preheader
+while.cond40.preheader:
+  br label %while.cond40
+while.cond40:
+  %indvars.iv194 = phi i8* [ null, %while.cond40.preheader ], [ %scevgep, %while.body51 ]
+  %tmp.1 = phi i8* [ undef, %while.cond40.preheader ], [ %incdec.ptr, %while.body51 ]
+  switch i8 undef, label %while.body51 [
+    i8 0, label %if.then59
+  ]
+while.body51:                                     ; preds = %land.end50
+  %incdec.ptr = getelementptr inbounds i8* %tmp.1, i64 1
+  %scevgep = getelementptr i8* %indvars.iv194, i64 1
+  br label %while.cond40
+if.then59:                                        ; preds = %while.end
+  br i1 undef, label %if.then64, label %if.end113
+if.then64:                                        ; preds = %if.then59
+  %incdec.ptr88.tmp.2 = select i1 undef, i8* undef, i8* undef
+  br label %if.end113
+if.end113:                                        ; preds = %if.then64, %if.then59
+  %tmp.4 = phi i8* [ %incdec.ptr88.tmp.2, %if.then64 ], [ undef, %if.then59 ]
+  %tmp.4195 = ptrtoint i8* %tmp.4 to i64
+  br  label %while.cond132.preheader
+while.cond132.preheader:                          ; preds = %if.end113
+  %cmp133173 = icmp eq i8* %tmp.1, %tmp.4
+  br i1 %cmp133173, label %while.cond40.preheader, label %while.body139.lr.ph
+while.body139.lr.ph:                              ; preds = %while.cond132.preheader
+  %scevgep198 = getelementptr i8* %indvars.iv194, i64 0
+  %scevgep198199 = ptrtoint i8* %scevgep198 to i64
+  br label %while.body139
+while.body139:                                    ; preds = %while.body139, %while.body139.lr.ph
+  %start_of_var.0177 = phi i8* [ %tmp.1, %while.body139.lr.ph ], [ null, %while.body139 ]
+  br i1 undef, label %while.cond132.while.cond.loopexit_crit_edge, label %while.body139
+}