From 8fa142729b04c022241b18671d6d539939b6d175 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 16 Aug 2005 00:36:12 +0000
Subject: [PATCH] testcase that crashes lsr, distilled from 175.vpr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22796 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../LoopStrengthReduce/2005-08-15-AddRecIV.ll      | 77 ++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 test/Transforms/LoopStrengthReduce/2005-08-15-AddRecIV.ll

diff --git a/test/Transforms/LoopStrengthReduce/2005-08-15-AddRecIV.ll b/test/Transforms/LoopStrengthReduce/2005-08-15-AddRecIV.ll
new file mode 100644
index 00000000000..2fcb1cc6df3
--- /dev/null
+++ b/test/Transforms/LoopStrengthReduce/2005-08-15-AddRecIV.ll
@@ -0,0 +1,77 @@
+; RUN: llvm-as < %s | opt -loop-reduce -disable-output
+
+void %try_swap() {
+entry:
+	br bool false, label %cond_continue.0.i, label %cond_false.0.i
+
+cond_false.0.i:		; preds = %entry
+	ret void
+
+cond_continue.0.i:		; preds = %entry
+	br bool false, label %cond_continue.1.i, label %cond_false.1.i
+
+cond_false.1.i:		; preds = %cond_continue.0.i
+	ret void
+
+cond_continue.1.i:		; preds = %cond_continue.0.i
+	br bool false, label %endif.3.i, label %else.0.i
+
+endif.3.i:		; preds = %cond_continue.1.i
+	br bool false, label %my_irand.exit82, label %endif.0.i62
+
+else.0.i:		; preds = %cond_continue.1.i
+	ret void
+
+endif.0.i62:		; preds = %endif.3.i
+	ret void
+
+my_irand.exit82:		; preds = %endif.3.i
+	br bool false, label %else.2, label %then.4
+
+then.4:		; preds = %my_irand.exit82
+	ret void
+
+else.2:		; preds = %my_irand.exit82
+	br bool false, label %find_affected_nets.exit, label %loopentry.1.i107.outer.preheader
+
+loopentry.1.i107.outer.preheader:		; preds = %else.2
+	ret void
+
+find_affected_nets.exit:		; preds = %else.2
+	br bool false, label %save_region_occ.exit, label %loopentry.1
+
+save_region_occ.exit:		; preds = %find_affected_nets.exit
+	br bool false, label %no_exit.1.preheader, label %loopexit.1
+
+loopentry.1:		; preds = %find_affected_nets.exit
+	ret void
+
+no_exit.1.preheader:		; preds = %save_region_occ.exit
+	ret void
+
+loopexit.1:		; preds = %save_region_occ.exit
+	br bool false, label %then.10, label %loopentry.3
+
+then.10:		; preds = %loopexit.1
+	ret void
+
+loopentry.3:		; preds = %endif.16, %loopexit.1
+	%indvar342 = phi uint [ %indvar.next343, %endif.16 ], [ 0, %loopexit.1 ]		; <uint> [#uses=2]
+	br bool false, label %loopexit.3, label %endif.16
+
+endif.16:		; preds = %loopentry.3
+	%indvar.next343 = add uint %indvar342, 1		; <uint> [#uses=1]
+	br label %loopentry.3
+
+loopexit.3:		; preds = %loopentry.3
+	br label %loopentry.4
+
+loopentry.4:		; preds = %loopentry.4, %loopexit.3
+	%indvar340 = phi uint [ 0, %loopexit.3 ], [ %indvar.next341, %loopentry.4 ]		; <uint> [#uses=2]
+	%tmp. = add uint %indvar340, %indvar342		; <uint> [#uses=1]
+	%tmp.526 = load int** null		; <int*> [#uses=1]
+	%tmp.528 = getelementptr int* %tmp.526, uint %tmp.		; <int*> [#uses=1]
+	store int 0, int* %tmp.528
+	%indvar.next341 = add uint %indvar340, 1		; <uint> [#uses=1]
+	br label %loopentry.4
+}
-- 
2.11.0