Verify that phi instructions refer to MBBs in the CFG.
The machine code verifier no longer tolerates phi instructions with noop
operands. All MBBs on a phi instruction must be in the CFG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82448 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineVerifier.cpp b/lib/CodeGen/MachineVerifier.cpp
index f43a370..b4d6588 100644
--- a/lib/CodeGen/MachineVerifier.cpp
+++ b/lib/CodeGen/MachineVerifier.cpp
@@ -592,13 +592,14 @@
}
break;
}
- // Can PHI instrs refer to MBBs not in the CFG? X86 and ARM do.
- // case MachineOperand::MO_MachineBasicBlock:
- // if (MI->getOpcode() == TargetInstrInfo::PHI) {
- // if (!MO->getMBB()->isSuccessor(MI->getParent()))
- // report("PHI operand is not in the CFG", MO, MONum);
- // }
- // break;
+
+ case MachineOperand::MO_MachineBasicBlock:
+ if (MI->getOpcode() == TargetInstrInfo::PHI) {
+ if (!MO->getMBB()->isSuccessor(MI->getParent()))
+ report("PHI operand is not in the CFG", MO, MONum);
+ }
+ break;
+
default:
break;
}