Move more PEI-related hooks to TFI

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120229 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 35 deletions

diff --git a/lib/Target/SystemZ/SystemZRegisterInfo.cpp b/lib/Target/SystemZ/SystemZRegisterInfo.cpp
index 32f81ced5a..401d88f745 100644
--- a/lib/Target/SystemZ/SystemZRegisterInfo.cpp
+++ b/lib/Target/SystemZ/SystemZRegisterInfo.cpp
@@ -99,41 +99,6 @@ SystemZRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
   MI.getOperand(i+1).ChangeToImmediate(Offset);
 }
 
-void
-SystemZRegisterInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
-                                                       RegScavenger *RS) const {
-  // Determine whether R15/R14 will ever be clobbered inside the function. And
-  // if yes - mark it as 'callee' saved.
-  MachineFrameInfo *FFI = MF.getFrameInfo();
-  MachineRegisterInfo &MRI = MF.getRegInfo();
-
-  // Check whether high FPRs are ever used, if yes - we need to save R15 as
-  // well.
-  static const unsigned HighFPRs[] = {
-    SystemZ::F8L,  SystemZ::F9L,  SystemZ::F10L, SystemZ::F11L,
-    SystemZ::F12L, SystemZ::F13L, SystemZ::F14L, SystemZ::F15L,
-    SystemZ::F8S,  SystemZ::F9S,  SystemZ::F10S, SystemZ::F11S,
-    SystemZ::F12S, SystemZ::F13S, SystemZ::F14S, SystemZ::F15S,
-  };
-
-  bool HighFPRsUsed = false;
-  for (unsigned i = 0, e = array_lengthof(HighFPRs); i != e; ++i)
-    HighFPRsUsed |= MRI.isPhysRegUsed(HighFPRs[i]);
-
-  if (FFI->hasCalls())
-    /* FIXME: function is varargs */
-    /* FIXME: function grabs RA */
-    /* FIXME: function calls eh_return */
-    MRI.setPhysRegUsed(SystemZ::R14D);
-
-  if (HighFPRsUsed ||
-      FFI->hasCalls() ||
-      FFI->getObjectIndexEnd() != 0 || // Contains automatic variables
-      FFI->hasVarSizedObjects() // Function calls dynamic alloca's
-      /* FIXME: function is varargs */)
-    MRI.setPhysRegUsed(SystemZ::R15D);
-}
-
 unsigned SystemZRegisterInfo::getRARegister() const {
   assert(0 && "What is the return address register");
   return 0;