Revert r103133 and add testcase from PR7066.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103233 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp
index f207086..398fc97 100644
--- a/lib/CodeGen/RegAllocLocal.cpp
+++ b/lib/CodeGen/RegAllocLocal.cpp
@@ -843,18 +843,8 @@
SmallVector<unsigned, 8> Kills;
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
MachineOperand &MO = MI->getOperand(i);
- if (!MO.isReg()) continue;
- unsigned Reg = MO.getReg();
- if (!Reg) continue;
-
- // Avoid allocating assigned early clobbers below.
- if (MO.isEarlyClobber() && TargetRegisterInfo::isPhysicalRegister(Reg)) {
- spillPhysReg(MBB, MI, Reg, true); // Spill any existing value in reg
- PhysRegsUsed[Reg] = 0; // It is free and reserved now
- AddToPhysRegsUseOrder(Reg);
- }
-
- if (!MO.isKill()) continue;
+ if (!MO.isReg() || !MO.isKill()) continue;
+
if (!MO.isImplicit())
Kills.push_back(MO.getReg());
else if (!isReadModWriteImplicitKill(MI, MO.getReg()))