Revert r123419. It still breaks llvm-gcc-i386-linux-selfhost.
llvm-svn: 123423
diff --git a/llvm/lib/CodeGen/PHIElimination.cpp b/llvm/lib/CodeGen/PHIElimination.cpp
index b940e26..923fa21 100644
--- a/llvm/lib/CodeGen/PHIElimination.cpp
+++ b/llvm/lib/CodeGen/PHIElimination.cpp
@@ -339,8 +339,6 @@
#ifndef NDEBUG
for (MachineBasicBlock::iterator TI = llvm::next(Term);
TI != opBlock.end(); ++TI) {
- if (TI->isDebugValue())
- continue;
assert(!TI->readsRegister(SrcReg) &&
"Terminator instructions cannot use virtual registers unless"
"they are the first terminator in a block!");
@@ -349,13 +347,9 @@
} else if (reusedIncoming || !IncomingReg) {
// We may have to rewind a bit if we didn't insert a copy this time.
KillInst = Term;
- while (KillInst != opBlock.begin()) {
- --KillInst;
- if (KillInst->isDebugValue())
- continue;
- if (KillInst->readsRegister(SrcReg))
+ while (KillInst != opBlock.begin())
+ if ((--KillInst)->readsRegister(SrcReg))
break;
- }
} else {
// We just inserted this copy.
KillInst = prior(InsertPos);