Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/Transforms/CodeExtractor/2004-03-13-LoopExtractorCrash.ll

@@ -0,0 +1,75 @@
+; RUN: opt < %s -loop-extract -disable-output
+
+define void @solve() {
+entry:
+	br label %loopentry.0
+
+loopentry.0:		; preds = %endif.0, %entry
+	br i1 false, label %no_exit.0, label %loopexit.0
+
+no_exit.0:		; preds = %loopentry.0
+	br i1 false, label %then.0, label %endif.0
+
+then.0:		; preds = %no_exit.0
+	br i1 false, label %shortcirc_done, label %shortcirc_next
+
+shortcirc_next:		; preds = %then.0
+	br label %shortcirc_done
+
+shortcirc_done:		; preds = %shortcirc_next, %then.0
+	br i1 false, label %then.1, label %endif.1
+
+then.1:		; preds = %shortcirc_done
+	br i1 false, label %cond_true, label %cond_false
+
+cond_true:		; preds = %then.1
+	br label %cond_continue
+
+cond_false:		; preds = %then.1
+	br label %cond_continue
+
+cond_continue:		; preds = %cond_false, %cond_true
+	br label %return
+
+after_ret.0:		; No predecessors!
+	br label %endif.1
+
+endif.1:		; preds = %after_ret.0, %shortcirc_done
+	br label %endif.0
+
+endif.0:		; preds = %endif.1, %no_exit.0
+	br label %loopentry.0
+
+loopexit.0:		; preds = %loopentry.0
+	br i1 false, label %then.2, label %endif.2
+
+then.2:		; preds = %loopexit.0
+	br i1 false, label %then.3, label %endif.3
+
+then.3:		; preds = %then.2
+	br label %return
+
+after_ret.1:		; No predecessors!
+	br label %endif.3
+
+endif.3:		; preds = %after_ret.1, %then.2
+	br label %endif.2
+
+endif.2:		; preds = %endif.3, %loopexit.0
+	br label %loopentry.1
+
+loopentry.1:		; preds = %no_exit.1, %endif.2
+	br i1 false, label %no_exit.1, label %loopexit.1
+
+no_exit.1:		; preds = %loopentry.1
+	br label %loopentry.1
+
+loopexit.1:		; preds = %loopentry.1
+	br label %return
+
+after_ret.2:		; No predecessors!
+	br label %return
+
+return:		; preds = %after_ret.2, %loopexit.1, %then.3, %cond_continue
+	ret void
+}