From d8a46e3a74251989f282ca186893dc90bf48e26d Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Wed, 4 Jun 2008 09:17:16 +0000
Subject: LowerSubregs should not clobber any analysis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51933 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/LowerSubregs.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/CodeGen/LowerSubregs.cpp')

diff --git a/lib/CodeGen/LowerSubregs.cpp b/lib/CodeGen/LowerSubregs.cpp
index 0710a35..aaadda1 100644
--- a/lib/CodeGen/LowerSubregs.cpp
+++ b/lib/CodeGen/LowerSubregs.cpp
@@ -30,6 +30,10 @@ namespace {
       return "Subregister lowering instruction pass";
     }
 
+    void getAnalysisUsage(AnalysisUsage &AU) const {
+      AU.setPreservesAll();
+    }
+
     /// runOnMachineFunction - pass entry point
     bool runOnMachineFunction(MachineFunction&);
     
-- 
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