From 050bac4bed7f04ae0471725719e360edd7468c3a Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 4 Aug 2007 20:14:34 +0000
Subject: reserve operand space for phi nodes when we insert them.

llvm-svn: 40820
---
 llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp')

diff --git a/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp b/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index 695df8c2be9..ecc317f24cf 100644
--- a/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -772,6 +772,7 @@ bool PromoteMem2Reg::QueuePhiNode(BasicBlock *BB, unsigned AllocaNo,
                    Allocas[AllocaNo]->getName() + "." +
                    utostr(Version++), BB->begin());
   PhiToAllocaMap[PN] = AllocaNo;
+  PN->reserveOperandSpace(std::distance(pred_begin(BB), pred_end(BB)));
   
   InsertedPHINodes.insert(PN);
 
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