[X86] Make hasFP constant time

[oota-llvm.git] / lib / CodeGen / SelectionDAG / SelectionDAGISel.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 853a21a15eb97bedd1debb5246147e3240b6d5cf..9f8759df0bab0ce0c992577729aecf5a03d22128 100644 (file)
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -633,6 +633,9 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
     MRI.replaceRegWith(From, To);
   }
 
+  if (TLI->hasCopyImplyingStackAdjustment(MF))
+    MFI->setHasOpaqueSPAdjustment(true);
+
   // Freeze the set of reserved registers now that MachineFrameInfo has been
   // set up. All the information required by getReservedRegs() should be
   // available now.