From 42000ef6c7bfd45989f6c76aa9d5be418b8bea42 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Thu, 26 Jul 2007 17:45:57 +0000
Subject: [PATCH] Test case for PR1573.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40539 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/2007-07-25-EpilogueBug.ll | 54 ++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 test/CodeGen/X86/2007-07-25-EpilogueBug.ll

diff --git a/test/CodeGen/X86/2007-07-25-EpilogueBug.ll b/test/CodeGen/X86/2007-07-25-EpilogueBug.ll
new file mode 100644
index 00000000000..a720bbb3277
--- /dev/null
+++ b/test/CodeGen/X86/2007-07-25-EpilogueBug.ll
@@ -0,0 +1,54 @@
+; RUN: llvm-as < %s | llc -mtriple=i686-pc-linux-gnu -mcpu=i386 | \
+; RUN:   %prcontext ret 1 | grep FP_REG_KILL
+; PR1573
+
+	%struct.c34006f__TsB = type { i8, i32, i32, %struct.c34006f__TsB___b___XVN }
+	%struct.c34006f__TsB___b___XVN = type { %struct.c34006f__TsB___b___XVN___O }
+	%struct.c34006f__TsB___b___XVN___O = type { float }
+
+define fastcc i8 @c34006f__pkg__parentEQ.213(%struct.c34006f__TsB* %x, %struct.c34006f__TsB* %y) zeroext  {
+entry:
+	%tmp190 = icmp eq i8 0, 0		; <i1> [#uses=1]
+	%tmp207 = icmp eq i32 0, 0		; <i1> [#uses=1]
+	%bothcond = and i1 %tmp190, %tmp207		; <i1> [#uses=1]
+	%tmp224 = icmp eq i32 0, 0		; <i1> [#uses=1]
+	%bothcond1 = and i1 %bothcond, %tmp224		; <i1> [#uses=1]
+	br i1 %bothcond1, label %cond_next229, label %UnifiedReturnBlock
+
+cond_next229:		; preds = %entry
+	%tmp234 = icmp eq i8 0, 0		; <i1> [#uses=1]
+	br i1 %tmp234, label %cond_false391, label %cond_true237
+
+cond_true237:		; preds = %cond_next229
+	%tmp268 = icmp sgt i32 0, -1		; <i1> [#uses=2]
+	%max269 = select i1 %tmp268, i32 0, i32 0		; <i32> [#uses=1]
+	%tmp305.op = add i32 0, -1		; <i32> [#uses=1]
+	br i1 false, label %bb328, label %cond_next315
+
+cond_next315:		; preds = %cond_true237
+	ret i8 0
+
+bb328:		; preds = %cond_true237
+	%tmp337 = select i1 %tmp268, i32 %tmp305.op, i32 -1		; <i32> [#uses=1]
+	%tmp347 = icmp eq i32 %tmp337, 0		; <i1> [#uses=1]
+	br i1 %tmp347, label %cond_next351, label %UnifiedReturnBlock
+
+cond_next351:		; preds = %bb328
+	%tmp354 = getelementptr %struct.c34006f__TsB* %y, i32 0, i32 3		; <%struct.c34006f__TsB___b___XVN*> [#uses=1]
+	%tmp354355 = bitcast %struct.c34006f__TsB___b___XVN* %tmp354 to i8*		; <i8*> [#uses=1]
+	%tmp358 = getelementptr %struct.c34006f__TsB* %x, i32 0, i32 3		; <%struct.c34006f__TsB___b___XVN*> [#uses=1]
+	%tmp358359 = bitcast %struct.c34006f__TsB___b___XVN* %tmp358 to i8*		; <i8*> [#uses=1]
+	%tmp360 = tail call i32 (i8*, i8*, i32, ...)* @memcmp( i8* %tmp358359, i8* %tmp354355, i32 %max269 )		; <i32> [#uses=0]
+	ret i8 0
+
+cond_false391:		; preds = %cond_next229
+	%tmp400 = fcmp une float 0.000000e+00, 0.000000e+00		; <i1> [#uses=1]
+	%not.tmp400 = xor i1 %tmp400, true		; <i1> [#uses=1]
+	%retval = zext i1 %not.tmp400 to i8		; <i8> [#uses=1]
+	ret i8 %retval
+
+UnifiedReturnBlock:		; preds = %bb328, %entry
+	ret i8 0
+}
+
+declare i32 @memcmp(i8*, i8*, i32, ...)