Revert "[AVR] Enable the frame pointer for all functions"

This reverts commit 358ad02d999e88853d2cfc954bd2f668308a51f7.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302014 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/AVR/AVRFrameLowering.cpp b/lib/Target/AVR/AVRFrameLowering.cpp
index 25232d2e47e13705b08998113dd779e1b7423d16..c297865db820550989858dffda3432bf85a1087c 100644 (file)
--- a/lib/Target/AVR/AVRFrameLowering.cpp
+++ b/lib/Target/AVR/AVRFrameLowering.cpp
@@ -228,9 +228,8 @@ void AVRFrameLowering::emitEpilogue(MachineFunction &MF,
 bool AVRFrameLowering::hasFP(const MachineFunction &MF) const {
   const AVRMachineFunctionInfo *FuncInfo = MF.getInfo<AVRMachineFunctionInfo>();
 
-  // TODO: We do not always need a frame pointer.
-  // This can be optimised.
-  return true;
+  return (FuncInfo->getHasSpills() || FuncInfo->getHasAllocas() ||
+          FuncInfo->getHasStackArgs());
 }
 
 bool AVRFrameLowering::spillCalleeSavedRegisters(