================
@@ -1363,6 +1363,14 @@ bool BranchFolder::OptimizeBlock(MachineBasicBlock *MBB)
{
MachineBasicBlock *Pred = *(MBB->pred_end()-1);
Pred->ReplaceUsesOfBlockWith(MBB, &*FallThrough);
}
+ // Add rest successors of MBB to successors of FallThrough. Those
+ // successors are not directly reachable via MBB, so it should be
+ // landing-pad.
+ for (auto SI = MBB->succ_begin(), SE = MBB->succ_end(); SI != SE; ++SI)
+ if (*SI != &*FallThrough && !FallThrough->isSuccessor(*SI)) {
+ assert((*SI)->isEHPad() && "Bad CFG");
+ FallThrough->copySuccessor(MBB, SI);
+ }
----------------
HaohaiWen wrote:
We need to run these code before removing MBB. ReplaceUsesOfBlockWith just
replace one of its users. It may run many needed to be run multi times.
https://github.com/llvm/llvm-project/pull/77608
_______________________________________________
lldb-commits mailing list
lldb-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
