From f52a6fc50ce086b6123f92d8d3fa940a27f153d4 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 19 Oct 2007 22:05:00 +0000
Subject: [PATCH] New test case.

llvm-svn: 43193
---
 .../CodeGen/X86/2007-10-19-SpillerUnfold.ll   | 84 +++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 llvm/test/CodeGen/X86/2007-10-19-SpillerUnfold.ll

diff --git a/llvm/test/CodeGen/X86/2007-10-19-SpillerUnfold.ll b/llvm/test/CodeGen/X86/2007-10-19-SpillerUnfold.ll
new file mode 100644
index 000000000000..e649999bb0a8
--- /dev/null
+++ b/llvm/test/CodeGen/X86/2007-10-19-SpillerUnfold.ll
@@ -0,0 +1,84 @@
+; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | grep inc | not grep PTR
+
+define i16 @t(i32* %bitptr, i32* %source, i8** %byteptr, i32 %scale, i32 %round) signext  {
+entry:
+	br label %bb
+
+bb:		; preds = %cond_next391, %entry
+	%cnt.0 = phi i32 [ 0, %entry ], [ %tmp422445, %cond_next391 ]		; <i32> [#uses=1]
+	%v.1 = phi i32 [ undef, %entry ], [ %tmp411, %cond_next391 ]		; <i32> [#uses=0]
+	br i1 false, label %cond_true, label %cond_next127
+
+cond_true:		; preds = %bb
+	store i8* null, i8** %byteptr, align 4
+	store i8* null, i8** %byteptr, align 4
+	br label %cond_next127
+
+cond_next127:		; preds = %cond_true, %bb
+	%tmp151 = add i32 0, %round		; <i32> [#uses=1]
+	%tmp153 = ashr i32 %tmp151, %scale		; <i32> [#uses=2]
+	%tmp154155 = trunc i32 %tmp153 to i16		; <i16> [#uses=1]
+	%tmp154155156 = sext i16 %tmp154155 to i32		; <i32> [#uses=1]
+	%tmp158 = xor i32 %tmp154155156, %tmp153		; <i32> [#uses=1]
+	%tmp160 = or i32 %tmp158, %cnt.0		; <i32> [#uses=1]
+	%tmp171 = load i32* %bitptr, align 4		; <i32> [#uses=1]
+	%tmp180181 = sext i16 0 to i32		; <i32> [#uses=3]
+	%tmp183 = add i32 %tmp160, 1		; <i32> [#uses=1]
+	br i1 false, label %cond_true188, label %cond_next245
+
+cond_true188:		; preds = %cond_next127
+	ret i16 0
+
+cond_next245:		; preds = %cond_next127
+	%tmp249 = ashr i32 %tmp180181, 8		; <i32> [#uses=1]
+	%tmp250 = add i32 %tmp171, %tmp249		; <i32> [#uses=1]
+	%tmp253444 = lshr i32 %tmp180181, 4		; <i32> [#uses=1]
+	%tmp254 = and i32 %tmp253444, 15		; <i32> [#uses=1]
+	%tmp256 = and i32 %tmp180181, 15		; <i32> [#uses=2]
+	%tmp264 = icmp ugt i32 %tmp250, 15		; <i1> [#uses=1]
+	br i1 %tmp264, label %cond_true267, label %cond_next391
+
+cond_true267:		; preds = %cond_next245
+	store i8* null, i8** %byteptr, align 4
+	store i8* null, i8** %byteptr, align 4
+	br i1 false, label %cond_true289, label %cond_next327
+
+cond_true289:		; preds = %cond_true267
+	ret i16 0
+
+cond_next327:		; preds = %cond_true267
+	br i1 false, label %cond_true343, label %cond_next385
+
+cond_true343:		; preds = %cond_next327
+	%tmp345 = load i8** %byteptr, align 4		; <i8*> [#uses=1]
+	store i8* null, i8** %byteptr, align 4
+	br i1 false, label %cond_next385, label %cond_true352
+
+cond_true352:		; preds = %cond_true343
+	store i8* %tmp345, i8** %byteptr, align 4
+	br i1 false, label %cond_true364, label %cond_next385
+
+cond_true364:		; preds = %cond_true352
+	ret i16 0
+
+cond_next385:		; preds = %cond_true352, %cond_true343, %cond_next327
+	br label %cond_next391
+
+cond_next391:		; preds = %cond_next385, %cond_next245
+	%tmp393 = load i32* %source, align 4		; <i32> [#uses=1]
+	%tmp395 = load i32* %bitptr, align 4		; <i32> [#uses=2]
+	%tmp396 = shl i32 %tmp393, %tmp395		; <i32> [#uses=1]
+	%tmp398 = sub i32 32, %tmp256		; <i32> [#uses=1]
+	%tmp405 = lshr i32 %tmp396, 31		; <i32> [#uses=1]
+	%tmp406 = add i32 %tmp405, -1		; <i32> [#uses=1]
+	%tmp409 = lshr i32 %tmp406, %tmp398		; <i32> [#uses=1]
+	%tmp411 = sub i32 0, %tmp409		; <i32> [#uses=1]
+	%tmp422445 = add i32 %tmp254, %tmp183		; <i32> [#uses=2]
+	%tmp426447 = add i32 %tmp395, %tmp256		; <i32> [#uses=1]
+	store i32 %tmp426447, i32* %bitptr, align 4
+	%tmp429448 = icmp ult i32 %tmp422445, 63		; <i1> [#uses=1]
+	br i1 %tmp429448, label %bb, label %UnifiedReturnBlock
+
+UnifiedReturnBlock:		; preds = %cond_next391
+	ret i16 0
+}