Align stack size to DWORD boundary

llvm-svn: 30964
diff --git a/llvm/lib/Target/X86/X86AsmPrinter.cpp b/llvm/lib/Target/X86/X86AsmPrinter.cpp
index 4ab72ee..829219d 100644
--- a/llvm/lib/Target/X86/X86AsmPrinter.cpp
+++ b/llvm/lib/Target/X86/X86AsmPrinter.cpp
@@ -53,6 +53,9 @@
        AI != AE; ++AI)
     Size += TD->getTypeSize(AI->getType());
 
+  // Size should be aligned to DWORD boundary
+  Size = ((Size + 3)/4)*4;
+  
   // We're not supporting tooooo huge arguments :)
   Info.setBytesToPopOnReturn((unsigned int)Size);
   return Info;