static char ID; // Pass identification, replacement for typeid
ExpandPostRA() : MachineFunctionPass(ID) {}
- const char *getPassName() const {
- return "Post-RA pseudo instruction expansion pass";
- }
-
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
AU.addPreservedID(MachineLoopInfoID);
} // end anonymous namespace
char ExpandPostRA::ID = 0;
+char &llvm::ExpandPostRAPseudosID = ExpandPostRA::ID;
-FunctionPass *llvm::createExpandPostRAPseudosPass() {
- return new ExpandPostRA();
-}
+INITIALIZE_PASS(ExpandPostRA, "postrapseudos",
+ "Post-RA pseudo instruction expansion pass", false, false)
/// TransferDeadFlag - MI is a pseudo-instruction with DstReg dead,
/// and the lowered replacement instructions immediately precede it.
MachineInstr *MI = mi;
// Advance iterator here because MI may be erased.
++mi;
+
+ // Only expand pseudos.
+ if (!MI->isPseudo())
+ continue;
+
+ // Give targets a chance to expand even standard pseudos.
+ if (TII->expandPostRAPseudo(MI)) {
+ MadeChange = true;
+ continue;
+ }
+
+ // Expand standard pseudos.
switch (MI->getOpcode()) {
case TargetOpcode::SUBREG_TO_REG:
MadeChange |= LowerSubregToReg(MI);
case TargetOpcode::INSERT_SUBREG:
case TargetOpcode::EXTRACT_SUBREG:
llvm_unreachable("Sub-register pseudos should have been eliminated.");
- default:
- if (MI->getDesc().isPseudo())
- MadeChange |= TII->expandPostRAPseudo(MI);
- break;
}
}
}