From: Evan Cheng <evan.cheng@apple.com>
Date: Sat, 10 Feb 2007 02:43:39 +0000 (+0000)
Subject: Add function live-ins to entry block live-in set.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ad2070c667ebabf1650be63e6b3e0b411da86918;p=oota-llvm.git

Add function live-ins to entry block live-in set.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34112 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 3b7fb6b58f6..ae7a495bf48 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3891,6 +3891,14 @@ bool SelectionDAGISel::runOnFunction(Function &Fn) {
   for (Function::iterator I = Fn.begin(), E = Fn.end(); I != E; ++I)
     SelectBasicBlock(I, MF, FuncInfo);
 
+  // Add function live-ins to entry block live-in set.
+  BasicBlock *EntryBB = &Fn.getEntryBlock();
+  BB = FuncInfo.MBBMap[EntryBB];
+  if (!MF.livein_empty())
+    for (MachineFunction::livein_iterator I = MF.livein_begin(),
+           E = MF.livein_end(); I != E; ++I)
+      BB->addLiveIn(I->first);
+
   return true;
 }