Recommit 116056, now with the missing file...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116083 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index ad2980e..4e435ee 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -121,7 +121,8 @@
     Subtarget(TT, FS, is64Bit),
     FrameInfo(TargetFrameInfo::StackGrowsDown,
               Subtarget.getStackAlignment(),
-              Subtarget.is64Bit() ? -8 : -4),
+              (Subtarget.isTargetWin64() ? -40 :
+               (Subtarget.is64Bit() ? -8 : -4))),
     ELFWriterInfo(is64Bit, true) {
   DefRelocModel = getRelocationModel();