Move hasFP() and few related hooks to TargetFrameInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119740 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCFrameInfo.cpp b/lib/Target/PowerPC/PPCFrameInfo.cpp
index 3823e3f..453975c 100644
--- a/lib/Target/PowerPC/PPCFrameInfo.cpp
+++ b/lib/Target/PowerPC/PPCFrameInfo.cpp
@@ -222,12 +222,25 @@
MFI->setStackSize(FrameSize);
}
+// hasFP - Return true if the specified function actually has a dedicated frame
+// pointer register.
+bool PPCFrameInfo::hasFP(const MachineFunction &MF) const {
+ const MachineFrameInfo *MFI = MF.getFrameInfo();
+
+ // Naked functions have no stack frame pushed, so we don't have a frame
+ // pointer.
+ if (MF.getFunction()->hasFnAttr(Attribute::Naked))
+ return false;
+
+ return DisableFramePointerElim(MF) || MFI->hasVarSizedObjects() ||
+ (GuaranteedTailCallOpt && MF.getInfo<PPCFunctionInfo>()->hasFastCall());
+}
+
+
void PPCFrameInfo::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
MachineBasicBlock::iterator MBBI = MBB.begin();
MachineFrameInfo *MFI = MF.getFrameInfo();
- const PPCRegisterInfo *RegInfo =
- static_cast<const PPCRegisterInfo*>(MF.getTarget().getRegisterInfo());
const PPCInstrInfo &TII =
*static_cast<const PPCInstrInfo*>(MF.getTarget().getInstrInfo());
@@ -266,7 +279,7 @@
PPCFunctionInfo *FI = MF.getInfo<PPCFunctionInfo>();
bool MustSaveLR = FI->mustSaveLR();
// Do we have a frame pointer for this function?
- bool HasFP = RegInfo->hasFP(MF) && FrameSize;
+ bool HasFP = hasFP(MF) && FrameSize;
int LROffset = PPCFrameInfo::getReturnSaveOffset(isPPC64, isDarwinABI);
@@ -471,21 +484,19 @@
void PPCFrameInfo::emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const {
MachineBasicBlock::iterator MBBI = prior(MBB.end());
- const PPCRegisterInfo *RegInfo =
- static_cast<const PPCRegisterInfo*>(MF.getTarget().getRegisterInfo());
const PPCInstrInfo &TII =
*static_cast<const PPCInstrInfo*>(MF.getTarget().getInstrInfo());
unsigned RetOpcode = MBBI->getOpcode();
DebugLoc dl;
- assert( (RetOpcode == PPC::BLR ||
- RetOpcode == PPC::TCRETURNri ||
- RetOpcode == PPC::TCRETURNdi ||
- RetOpcode == PPC::TCRETURNai ||
- RetOpcode == PPC::TCRETURNri8 ||
- RetOpcode == PPC::TCRETURNdi8 ||
- RetOpcode == PPC::TCRETURNai8) &&
+ assert((RetOpcode == PPC::BLR ||
+ RetOpcode == PPC::TCRETURNri ||
+ RetOpcode == PPC::TCRETURNdi ||
+ RetOpcode == PPC::TCRETURNai ||
+ RetOpcode == PPC::TCRETURNri8 ||
+ RetOpcode == PPC::TCRETURNdi8 ||
+ RetOpcode == PPC::TCRETURNai8) &&
"Can only insert epilog into returning blocks");
// Get alignment info so we know how to restore r1
@@ -504,7 +515,7 @@
PPCFunctionInfo *FI = MF.getInfo<PPCFunctionInfo>();
bool MustSaveLR = FI->mustSaveLR();
// Do we have a frame pointer for this function?
- bool HasFP = RegInfo->hasFP(MF) && FrameSize;
+ bool HasFP = hasFP(MF) && FrameSize;
int LROffset = PPCFrameInfo::getReturnSaveOffset(isPPC64, isDarwinABI);
@@ -550,7 +561,7 @@
// call which invalidates the stack pointer value in SP(0). So we use the
// value of R31 in this case.
if (FI->hasFastCall() && isInt<16>(FrameSize)) {
- assert(RegInfo->hasFP(MF) && "Expecting a valid the frame pointer.");
+ assert(hasFP(MF) && "Expecting a valid the frame pointer.");
BuildMI(MBB, MBBI, dl, TII.get(PPC::ADDI), PPC::R1)
.addReg(PPC::R31).addImm(FrameSize);
} else if(FI->hasFastCall()) {
@@ -574,7 +585,7 @@
}
} else {
if (FI->hasFastCall() && isInt<16>(FrameSize)) {
- assert(RegInfo->hasFP(MF) && "Expecting a valid the frame pointer.");
+ assert(hasFP(MF) && "Expecting a valid the frame pointer.");
BuildMI(MBB, MBBI, dl, TII.get(PPC::ADDI8), PPC::X1)
.addReg(PPC::X31).addImm(FrameSize);
} else if(FI->hasFastCall()) {