commit 168f8f3916733e18b237046007d41fa95f2ef025
author Evan Cheng <evan.cheng@apple.com> Mon Sep 22 20:58:04 2008 +0000
committer Evan Cheng <evan.cheng@apple.com> Mon Sep 22 20:58:04 2008 +0000
tree 2deea0ac8a64099c8845d074fbbf9fed0bbdd73e
parent f1acc4d6107dc470a6565d73027d6fc2bd9c9784

Mark several codegen passes as preserving all analysis.

llvm-svn: 56469

llvm/lib/CodeGen/LowerSubregs.cpp

diff --git a/llvm/lib/CodeGen/LowerSubregs.cpp b/llvm/lib/CodeGen/LowerSubregs.cpp
index 6e115dd..5430d4f 100644
--- a/llvm/lib/CodeGen/LowerSubregs.cpp
+++ b/llvm/lib/CodeGen/LowerSubregs.cpp
@@ -30,6 +30,11 @@
       return "Subregister lowering instruction pass";
     }
 
+    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+      AU.setPreservesAll();
+      MachineFunctionPass::getAnalysisUsage(AU);
+    }
+
     /// runOnMachineFunction - pass entry point
     bool runOnMachineFunction(MachineFunction&);