X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FTargetFrameLoweringImpl.cpp;h=679ade185e1c69cfbd700282507133af37f91b7e;hb=8c9bc7b01bf5e097f461703f6ce7a35e65178e66;hp=847027e2819f6e211d57ba583df4bbb2919e0518;hpb=276ea22dc9394895602695c396844268c7d64a42;p=oota-llvm.git

diff --git a/lib/CodeGen/TargetFrameLoweringImpl.cpp b/lib/CodeGen/TargetFrameLoweringImpl.cpp
index 847027e2819..679ade185e1 100644
--- a/lib/CodeGen/TargetFrameLoweringImpl.cpp
+++ b/lib/CodeGen/TargetFrameLoweringImpl.cpp
@@ -17,6 +17,7 @@
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/IR/CallingConv.h"
 #include "llvm/IR/Function.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
@@ -81,3 +82,13 @@ void TargetFrameLowering::determineCalleeSaves(MachineFunction &MF,
       SavedRegs.set(Reg);
   }
 }
+
+unsigned TargetFrameLowering::getStackAlignmentSkew(
+    const MachineFunction &MF) const {
+  // When HHVM function is called, the stack is skewed as the return address
+  // is removed from the stack before we enter the function.
+  if (LLVM_UNLIKELY(MF.getFunction()->getCallingConv() == CallingConv::HHVM))
+    return MF.getTarget().getPointerSize();
+
+  return 0;
+}