From 82ada54da02a0b2a977fdeb6782c8e5ab9a9b9ea Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Fri, 8 Feb 2008 22:49:13 +0000
Subject: Fix PR 1995.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46898 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Transforms/LoopIndexSplit/2008-02-08-Crash.ll | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 test/Transforms/LoopIndexSplit/2008-02-08-Crash.ll

(limited to 'test/Transforms/LoopIndexSplit')

diff --git a/test/Transforms/LoopIndexSplit/2008-02-08-Crash.ll b/test/Transforms/LoopIndexSplit/2008-02-08-Crash.ll
new file mode 100644
index 0000000000..4ad906719f
--- /dev/null
+++ b/test/Transforms/LoopIndexSplit/2008-02-08-Crash.ll
@@ -0,0 +1,48 @@
+; RUN: llvm-as < %s | opt -loop-index-split -disable-output
+; PR 1995
+
+define void @add_blkdev_randomness(i32 %major) nounwind  {
+entry:
+	br label %bb
+
+bb:		; preds = %bb39, %entry
+	%A.0.reg2mem.0 = phi i32 [ undef, %entry ], [ %TEMP.0, %bb39 ]		; <i32> [#uses=1]
+	%D.0.reg2mem.0 = phi i32 [ undef, %entry ], [ %C.0.reg2mem.0, %bb39 ]		; <i32> [#uses=3]
+	%C.0.reg2mem.0 = phi i32 [ undef, %entry ], [ %tmp34, %bb39 ]		; <i32> [#uses=4]
+	%TEMP.1.reg2mem.0 = phi i32 [ undef, %entry ], [ %TEMP.0, %bb39 ]		; <i32> [#uses=1]
+	%i.0.reg2mem.0 = phi i32 [ 0, %entry ], [ %tmp38, %bb39 ]		; <i32> [#uses=3]
+	%B.0.reg2mem.0 = phi i32 [ undef, %entry ], [ %A.0.reg2mem.0, %bb39 ]		; <i32> [#uses=5]
+	%tmp1 = icmp slt i32 %i.0.reg2mem.0, 40		; <i1> [#uses=1]
+	br i1 %tmp1, label %bb3, label %bb12
+
+bb3:		; preds = %bb
+	%tmp6 = xor i32 %C.0.reg2mem.0, %D.0.reg2mem.0		; <i32> [#uses=1]
+	%tmp8 = and i32 %B.0.reg2mem.0, %tmp6		; <i32> [#uses=1]
+	%tmp10 = xor i32 %tmp8, %D.0.reg2mem.0		; <i32> [#uses=1]
+	%tmp11 = add i32 %tmp10, 1518500249		; <i32> [#uses=1]
+	br label %bb39
+
+bb12:		; preds = %bb
+	%tmp14 = icmp slt i32 %i.0.reg2mem.0, 60		; <i1> [#uses=1]
+	br i1 %tmp14, label %bb17, label %bb39
+
+bb17:		; preds = %bb12
+	%tmp20 = and i32 %B.0.reg2mem.0, %C.0.reg2mem.0		; <i32> [#uses=1]
+	%tmp23 = xor i32 %B.0.reg2mem.0, %C.0.reg2mem.0		; <i32> [#uses=1]
+	%tmp25 = and i32 %tmp23, %D.0.reg2mem.0		; <i32> [#uses=1]
+	%tmp26 = add i32 %tmp20, -1894007588		; <i32> [#uses=1]
+	%tmp27 = add i32 %tmp26, %tmp25		; <i32> [#uses=1]
+	br label %bb39
+
+bb39:		; preds = %bb12, %bb3, %bb17
+	%TEMP.0 = phi i32 [ %tmp27, %bb17 ], [ %tmp11, %bb3 ], [ %TEMP.1.reg2mem.0, %bb12 ]		; <i32> [#uses=2]
+	%tmp31 = lshr i32 %B.0.reg2mem.0, 2		; <i32> [#uses=1]
+	%tmp33 = shl i32 %B.0.reg2mem.0, 30		; <i32> [#uses=1]
+	%tmp34 = or i32 %tmp31, %tmp33		; <i32> [#uses=1]
+	%tmp38 = add i32 %i.0.reg2mem.0, 1		; <i32> [#uses=2]
+	%tmp41 = icmp slt i32 %tmp38, 80		; <i1> [#uses=1]
+	br i1 %tmp41, label %bb, label %return
+
+return:		; preds = %bb39
+	ret void
+}
\ No newline at end of file
-- 
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