};
static unsigned computeReturnSaveOffset(const PPCSubtarget &STI) {
- if (STI.isDarwinABI())
+ if (STI.isDarwinABI() || STI.isAIXABI())
return STI.isPPC64() ? 16 : 8;
// SVR4 ABI:
return STI.isPPC64() ? 16 : 4;
}
static unsigned computeTOCSaveOffset(const PPCSubtarget &STI) {
+ if (STI.isAIXABI())
+ return STI.isPPC64() ? 40 : 20;
return STI.isELFv2ABI() ? 24 : 40;
}
bool isPPC64 = Subtarget.isPPC64();
// Get the ABI.
bool isSVR4ABI = Subtarget.isSVR4ABI();
+ bool isAIXABI = Subtarget.isAIXABI();
bool isELFv2ABI = Subtarget.isELFv2ABI();
- assert((Subtarget.isDarwinABI() || isSVR4ABI) &&
- "Currently only Darwin and SVR4 ABIs are supported for PowerPC.");
+ assert((Subtarget.isDarwinABI() || isSVR4ABI || isAIXABI) &&
+ "Unsupported PPC ABI.");
// Scan the prolog, looking for an UPDATE_VRSAVE instruction. If we find it,
// process it.
if (!isSVR4ABI)
for (unsigned i = 0; MBBI != MBB.end(); ++i, ++MBBI) {
if (MBBI->getOpcode() == PPC::UPDATE_VRSAVE) {
+ if (isAIXABI)
+ report_fatal_error("UPDATE_VRSAVE is unexpected on AIX.");
HandleVRSaveUpdate(*MBBI, TII);
break;
}
assert((isPPC64 || !MustSaveCR) &&
"Prologue CR saving supported only in 64-bit mode");
+ if (MustSaveCR && isAIXABI)
+ report_fatal_error("Prologue CR saving is unimplemented on AIX.");
+
// Check if we can move the stack update instruction (stdu) down the prologue
// past the callee saves. Hopefully this will avoid the situation where the
// saves are waiting for the update on the store with update to complete.
return true;
}
+unsigned PPCFrameLowering::getTOCSaveOffset() const {
+ if (Subtarget.isAIXABI())
+ // TOC save/restore is normally handled by the linker.
+ // Indirect calls should hit this limitation.
+ report_fatal_error("TOC save is not implemented on AIX yet.");
+ return TOCSaveOffset;
+}
+
+unsigned PPCFrameLowering::getFramePointerSaveOffset() const {
+ if (Subtarget.isAIXABI())
+ report_fatal_error("FramePointer is not implemented on AIX yet.");
+ return FramePointerSaveOffset;
+}
+
+unsigned PPCFrameLowering::getBasePointerSaveOffset() const {
+ if (Subtarget.isAIXABI())
+ report_fatal_error("BasePointer is not implemented on AIX yet.");
+ return BasePointerSaveOffset;
+}
+
bool PPCFrameLowering::enableShrinkWrapping(const MachineFunction &MF) const {
if (MF.getInfo<PPCFunctionInfo>()->shrinkWrapDisabled())
return false;
/// getTOCSaveOffset - Return the previous frame offset to save the
/// TOC register -- 64-bit SVR4 ABI only.
- unsigned getTOCSaveOffset() const { return TOCSaveOffset; }
+ unsigned getTOCSaveOffset() const;
/// getFramePointerSaveOffset - Return the previous frame offset to save the
/// frame pointer.
- unsigned getFramePointerSaveOffset() const { return FramePointerSaveOffset; }
+ unsigned getFramePointerSaveOffset() const;
/// getBasePointerSaveOffset - Return the previous frame offset to save the
/// base pointer.
- unsigned getBasePointerSaveOffset() const { return BasePointerSaveOffset; }
+ unsigned getBasePointerSaveOffset() const;
/// getCRSaveOffset - Return the previous frame offset to save the
/// CR register.