/// frame indexes with appropriate references.
///
bool PEI::runOnMachineFunction(MachineFunction &Fn) {
+ const Function* F = Fn.getFunction();
const TargetRegisterInfo *TRI = Fn.getTarget().getRegisterInfo();
RS = TRI->requiresRegisterScavenging(Fn) ? new RegScavenger() : NULL;
placeCSRSpillsAndRestores(Fn);
// Add the code to save and restore the callee saved registers
- insertCSRSpillsAndRestores(Fn);
+ if (!F->hasFnAttr(Attribute::Naked))
+ insertCSRSpillsAndRestores(Fn);
// Allow the target machine to make final modifications to the function
// before the frame layout is finalized.
// called functions. Because of this, calculateCalleeSavedRegisters
// must be called before this function in order to set the HasCalls
// and MaxCallFrameSize variables.
- insertPrologEpilogCode(Fn);
+ if (!F->hasFnAttr(Attribute::Naked))
+ insertPrologEpilogCode(Fn);
// Replace all MO_FrameIndex operands with physical register references
// and actual offsets.
if (Size > MaxCallFrameSize) MaxCallFrameSize = Size;
HasCalls = true;
FrameSDOps.push_back(I);
+ } else if (I->getOpcode() == TargetInstrInfo::INLINEASM) {
+ // An InlineAsm might be a call; assume it is to get the stack frame
+ // aligned correctly for calls.
+ HasCalls = true;
}
MachineFrameInfo *FFI = Fn.getFrameInfo();