From 27b1bb999b33d4b54308f51e6e03bcc0dda51a21 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Wed, 11 Oct 2006 07:01:37 +0000
Subject: [PATCH] Test case for the recently fixed FindModifiedNodeSlot bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30877 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../X86/2006-10-10-FindModifiedNodeSlotBug.ll      | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 test/CodeGen/X86/2006-10-10-FindModifiedNodeSlotBug.ll

diff --git a/test/CodeGen/X86/2006-10-10-FindModifiedNodeSlotBug.ll b/test/CodeGen/X86/2006-10-10-FindModifiedNodeSlotBug.ll
new file mode 100644
index 00000000000..5cb233bd5fb
--- /dev/null
+++ b/test/CodeGen/X86/2006-10-10-FindModifiedNodeSlotBug.ll
@@ -0,0 +1,31 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep shrl
+; Bug in FindModifiedNodeSlot cause tmp14 load to become a zextload and shr 31
+; is then optimized away.
+
+%tree_code_type = external global [0 x uint]
+
+void %copy_if_shared_r() {
+	%tmp = load uint* null
+	%tmp56 = and uint %tmp, 255
+	%tmp8 = getelementptr [0 x uint]* %tree_code_type, int 0, uint %tmp56
+	%tmp9 = load uint* %tmp8
+	%tmp10 = add uint %tmp9, 4294967295
+	%tmp = setgt uint %tmp10, 2
+	%tmp14 = load uint* null
+	%tmp15 = shr uint %tmp14, ubyte 31
+	%tmp15 = cast uint %tmp15 to ubyte
+	%tmp16 = setne ubyte %tmp15, 0
+	br bool %tmp, label %cond_false25, label %cond_true
+
+cond_true:
+	br bool %tmp16, label %cond_true17, label %cond_false
+
+cond_true17:
+	ret void
+
+cond_false:
+	ret void
+
+cond_false25:
+	ret void
+}
-- 
2.11.0