[PATCH] D46399: Skip blocks with no predecessors for CFIInstrInserter verify

[Petar Jovanovic via Phabricator via llvm-commits]

petarj created this revision.
petarj added reviewers: craig.topper, thegameg.

Skip nested block that have no predecessors. It finetunes r330706 and
resolves build issue reported by Craig Topper.


Repository:
  rL LLVM

https://reviews.llvm.org/D46399

Files:
  lib/CodeGen/CFIInstrInserter.cpp


Index: lib/CodeGen/CFIInstrInserter.cpp
===================================================================
--- lib/CodeGen/CFIInstrInserter.cpp
+++ lib/CodeGen/CFIInstrInserter.cpp
@@ -293,6 +293,8 @@
   unsigned ErrorNum = 0;
   for (MachineBasicBlock &CurrMBB : MF) {
     const MBBCFAInfo &CurrMBBInfo = MBBVector[CurrMBB.getNumber()];
+    if (CurrMBB.getNumber() != MF.front().getNumber() && !CurrMBB.pred_size())
+      continue;
     for (MachineBasicBlock *Succ : CurrMBB.successors()) {
       const MBBCFAInfo &SuccMBBInfo = MBBVector[Succ->getNumber()];
       // Check that incoming offset and register values of successors match the


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