From 7e073baedb8232b9519dbe15ea141ff98ccfe6ae Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Wed, 9 Apr 2008 20:57:25 +0000
Subject: - More aggressively coalescing away copies whose source is defined by
 an implicit_def. - Added insert_subreg coalescing support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49448 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/ins_subreg_coalesce-1.ll | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 test/CodeGen/X86/ins_subreg_coalesce-1.ll

(limited to 'test/CodeGen/X86/ins_subreg_coalesce-1.ll')

diff --git a/test/CodeGen/X86/ins_subreg_coalesce-1.ll b/test/CodeGen/X86/ins_subreg_coalesce-1.ll
new file mode 100644
index 0000000..863cda9
--- /dev/null
+++ b/test/CodeGen/X86/ins_subreg_coalesce-1.ll
@@ -0,0 +1,24 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep mov | count 2
+
+define fastcc i32 @sqlite3ExprResolveNames() nounwind  {
+entry:
+	br i1 false, label %UnifiedReturnBlock, label %bb4
+bb4:		; preds = %entry
+	br i1 false, label %bb17, label %bb22
+bb17:		; preds = %bb4
+	ret i32 1
+bb22:		; preds = %bb4
+	br i1 true, label %walkExprTree.exit, label %bb4.i
+bb4.i:		; preds = %bb22
+	ret i32 0
+walkExprTree.exit:		; preds = %bb22
+	%tmp83 = load i16* null, align 4		; <i16> [#uses=1]
+	%tmp84 = or i16 %tmp83, 2		; <i16> [#uses=2]
+	store i16 %tmp84, i16* null, align 4
+	%tmp98993 = zext i16 %tmp84 to i32		; <i32> [#uses=1]
+	%tmp1004 = lshr i32 %tmp98993, 3		; <i32> [#uses=1]
+	%tmp100.lobit5 = and i32 %tmp1004, 1		; <i32> [#uses=1]
+	ret i32 %tmp100.lobit5
+UnifiedReturnBlock:		; preds = %entry
+	ret i32 0
+}
-- 
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