Move the check whether it's worth remating to caller.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55434 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 966d172..0b1afa3 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -714,8 +714,6 @@
 /// isSafeToReMat - Return true if it's safe to rematerialize the specified
 /// instruction which defined the specified register instead of copying it.
 bool MachineInstr::isSafeToReMat(const TargetInstrInfo *TII, unsigned DstReg) {
-  if (!TID->isAsCheapAsAMove())
-    return false;
   bool SawStore = false;
   if (!isSafeToMove(TII, SawStore))
     return false;
@@ -726,7 +724,7 @@
     // FIXME: For now, do not remat any instruction with register operands.
     // Later on, we can loosen the restriction is the register operands have
     // not been modified between the def and use. Note, this is different from
-    // MachineSink because the code in no longer in two-address form (at least
+    // MachineSink because the code is no longer in two-address form (at least
     // partially).
     if (MO.isUse())
       return false;