X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=lib%2FCodeGen%2FMachineInstr.cpp;h=7d1f15c487b4d0b1195feedabd221b4738c1ab6c;hb=86cba32bb4858f988b5026b62a66c4dba473f08b;hp=98cc7672edf50b937345f32481294896e75ce849;hpb=c23197a26f34f559ea9797de51e187087c039c42;p=oota-llvm.git

diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 98cc7672edf..7d1f15c487b 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -243,7 +243,7 @@ void MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const {
     OS << getImm();
     break;
   case MachineOperand::MO_FPImmediate:
-    if (getFPImm()->getType() == Type::FloatTy)
+    if (getFPImm()->getType() == Type::getFloatTy(getFPImm()->getContext()))
       OS << getFPImm()->getValueAPF().convertToFloat();
     else
       OS << getFPImm()->getValueAPF().convertToDouble();
@@ -732,7 +732,9 @@ isRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx) const {
     unsigned DefPart = 0;
     for (unsigned i = 1, e = getNumOperands(); i < e; ) {
       const MachineOperand &FMO = getOperand(i);
-      assert(FMO.isImm());
+      // After the normal asm operands there may be additional imp-def regs.
+      if (!FMO.isImm())
+        return false;
       // Skip over this def.
       unsigned NumOps = InlineAsm::getNumOperandRegisters(FMO.getImm());
       unsigned PrevDef = i + 1;
@@ -783,16 +785,22 @@ isRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx) const {
     const MachineOperand &MO = getOperand(UseOpIdx);
     if (!MO.isReg() || !MO.isUse() || MO.getReg() == 0)
       return false;
-    int FlagIdx = UseOpIdx - 1;
-    if (FlagIdx < 1)
-      return false;
-    while (!getOperand(FlagIdx).isImm()) {
-      if (--FlagIdx == 0)
+
+    // Find the flag operand corresponding to UseOpIdx
+    unsigned FlagIdx, NumOps=0;
+    for (FlagIdx = 1; FlagIdx < UseOpIdx; FlagIdx += NumOps+1) {
+      const MachineOperand &UFMO = getOperand(FlagIdx);
+      // After the normal asm operands there may be additional imp-def regs.
+      if (!UFMO.isImm())
         return false;
+      NumOps = InlineAsm::getNumOperandRegisters(UFMO.getImm());
+      assert(NumOps < getNumOperands() && "Invalid inline asm flag");
+      if (UseOpIdx < FlagIdx+NumOps+1)
+        break;
     }
-    const MachineOperand &UFMO = getOperand(FlagIdx);
-    if (FlagIdx + InlineAsm::getNumOperandRegisters(UFMO.getImm()) < UseOpIdx)
+    if (FlagIdx >= UseOpIdx)
       return false;
+    const MachineOperand &UFMO = getOperand(FlagIdx);
     unsigned DefNo;
     if (InlineAsm::isUseOperandTiedToDef(UFMO.getImm(), DefNo)) {
       if (!DefOpIdx)
@@ -881,7 +889,7 @@ bool MachineInstr::isSafeToMove(const TargetInstrInfo *TII,
   // load.
   if (TID->mayLoad() && !TII->isInvariantLoad(this))
     // Otherwise, this is a real load.  If there is a store between the load and
-    // end of block, or if the laod is volatile, we can't move it.
+    // end of block, or if the load is volatile, we can't move it.
     return !SawStore && !hasVolatileMemoryRef();
 
   return true;
@@ -1022,7 +1030,7 @@ bool MachineInstr::addRegisterKilled(unsigned IncomingReg,
   SmallVector<unsigned,4> DeadOps;
   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
     MachineOperand &MO = getOperand(i);
-    if (!MO.isReg() || !MO.isUse())
+    if (!MO.isReg() || !MO.isUse() || MO.isUndef())
       continue;
     unsigned Reg = MO.getReg();
     if (!Reg)
@@ -1033,6 +1041,9 @@ bool MachineInstr::addRegisterKilled(unsigned IncomingReg,
         if (MO.isKill())
           // The register is already marked kill.
           return true;
+        if (isPhysReg && isRegTiedToDefOperand(i))
+          // Two-address uses of physregs must not be marked kill.
+          return true;
         MO.setIsKill();
         Found = true;
       }