From cb3a65755e5161519355e5aad5107915be750597 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 3 Mar 2011 20:02:02 +0000
Subject: [PATCH] llvm::Function argument count is not a good indicator of how
 many arugments does the function have at source level. If we need more space,
 just resize vector conservatively. This vector is only used once per
 function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126957 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 9aa03892dfd..2feb1256ccf 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2330,8 +2330,11 @@ bool DwarfDebug::addCurrentFnArgument(const MachineFunction *MF,
   if (ArgNo == 0) 
     return false;
 
-  if (CurrentFnArguments.size() == 0)
+  size_t Size = CurrentFnArguments.size();
+  if (Size == 0)
     CurrentFnArguments.resize(MF->getFunction()->arg_size());
+  else if (ArgNo > Size)
+    CurrentFnArguments.resize(ArgNo * 2);
   CurrentFnArguments[ArgNo - 1] = Var;
   return true;
 }