Set NumSignBits to 1 if KnownZero/KnownOne are being zero extended. In theory it

[oota-llvm.git] / lib / CodeGen / VirtRegRewriter.cpp

diff --git a/lib/CodeGen/VirtRegRewriter.cpp b/lib/CodeGen/VirtRegRewriter.cpp
index 1d0404efb5708325a88b031c88e81ae523a2faff..ec149dddc1d917c2d4aa010afa33afc042bc6ade 100644 (file)
--- a/lib/CodeGen/VirtRegRewriter.cpp
+++ b/lib/CodeGen/VirtRegRewriter.cpp
@@ -478,7 +478,8 @@ static void ResurrectConfirmedKill(unsigned Reg, const TargetRegisterInfo* TRI,
   if (!RegKills[KReg])
     return;
 
-  assert(KillOps[KReg] == KillOp && "invalid superreg kill flags");
+  assert(KillOps[KReg]->getParent() == KillOp->getParent() &&
+         "invalid superreg kill flags");
   KillOps[KReg] = NULL;
   RegKills.reset(KReg);
 
@@ -487,7 +488,8 @@ static void ResurrectConfirmedKill(unsigned Reg, const TargetRegisterInfo* TRI,
   for (const unsigned *SR = TRI->getSubRegisters(KReg); *SR; ++SR) {
     DEBUG(dbgs() << "  Resurrect subreg " << TRI->getName(*SR) << "\n");
 
-    assert(KillOps[*SR] == KillOp && "invalid subreg kill flags");
+    assert(KillOps[*SR]->getParent() == KillOp->getParent() &&
+           "invalid subreg kill flags");
     KillOps[*SR] = NULL;
     RegKills.reset(*SR);
   }
@@ -1633,7 +1635,7 @@ SpillRegToStackSlot(MachineBasicBlock::iterator &MII,
 /// effect and all of its defs are dead.
 static bool isSafeToDelete(MachineInstr &MI) {
   const TargetInstrDesc &TID = MI.getDesc();
-  if (TID.mayLoad() || TID.mayStore() || TID.isCall() || TID.isTerminator() ||
+  if (TID.mayLoad() || TID.mayStore() || TID.isTerminator() ||
       TID.isCall() || TID.isBarrier() || TID.isReturn() ||
       MI.isLabel() || MI.isDebugValue() ||
       MI.hasUnmodeledSideEffects())