Add section switching to common code generator code. Add a couple of
asserts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24445 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp
index cb034c0..a1bda19 100644
--- a/lib/CodeGen/LiveVariables.cpp
+++ b/lib/CodeGen/LiveVariables.cpp
@@ -278,10 +278,11 @@
MachineOperand &MO = MI->getOperand(i);
if (!MO.getVRegValueOrNull()) {
VarInfo &VRInfo = getVarInfo(MO.getReg());
+ assert(VRInfo.DefInst && "Register use before def (or no def)!");
- // Only mark it alive only in the block we are representing...
+ // Only mark it alive only in the block we are representing.
MarkVirtRegAliveInBlock(VRInfo, MBB);
- break; // Found the PHI entry for this block...
+ break; // Found the PHI entry for this block.
}
}
}