1 files changed, 20 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsSEFrameLowering.cpp b/lib/Target/Mips/MipsSEFrameLowering.cpp
index e5ecf2c5e2..0dd671376f 100644
--- a/lib/Target/Mips/MipsSEFrameLowering.cpp
+++ b/lib/Target/Mips/MipsSEFrameLowering.cpp
@@ -249,6 +249,26 @@ MipsSEFrameLowering::hasReservedCallFrame(const MachineFunction &MF) const {
   return isInt<16>(MFI->getMaxCallFrameSize()) && !MFI->hasVarSizedObjects();
 }
 
+// Eliminate ADJCALLSTACKDOWN, ADJCALLSTACKUP pseudo instructions
+void MipsSEFrameLowering::
+eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
+                              MachineBasicBlock::iterator I) const {
+  const MipsSEInstrInfo &TII =
+    *static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo());
+
+  if (!hasReservedCallFrame(MF)) {
+    int64_t Amount = I->getOperand(0).getImm();
+
+    if (I->getOpcode() == Mips::ADJCALLSTACKDOWN)
+      Amount = -Amount;
+
+    unsigned SP = STI.isABI_N64() ? Mips::SP_64 : Mips::SP;
+    TII.adjustStackPtr(SP, Amount, MBB, I);
+  }
+
+  MBB.erase(I);
+}
+
 void MipsSEFrameLowering::
 processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
                                      RegScavenger *RS) const {