Trust kill flags from isel and later passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103748 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/RegAllocFast.cpp b/lib/CodeGen/RegAllocFast.cpp
index 2f59b1d849bf9fb92311328a04f92e1582b88c75..66ba86ac94c55fa4f6dcc942a3b1b537e8eb136d 100644 (file)
--- a/lib/CodeGen/RegAllocFast.cpp
+++ b/lib/CodeGen/RegAllocFast.cpp
@@ -673,10 +673,6 @@ void RAFast::AllocateBasicBlock(MachineBasicBlock &MBB) {
     for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
       MachineOperand &MO = MI->getOperand(i);
       if (!MO.isReg()) continue;
-
-      // FIXME: For now, don't trust kill flags
-      if (MO.isUse()) MO.setIsKill(false);
-
       unsigned Reg = MO.getReg();
       if (!Reg || !TargetRegisterInfo::isPhysicalRegister(Reg) ||
           ReservedRegs.test(Reg)) continue;