Remove the '-disable-scheduling' flag and replace it with the 'source' option of

the '-pre-RA-sched' flag. It actually makes more sense to do it this way. Also,
keep track of the SDNode ordering by default. Eventually, we would like to make
this ordering a way to break a "tie" in the scheduler. However, doing that now
breaks the "CodeGen/X86/abi-isel.ll" test for 32-bit Linux.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94308 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/TargetMachine.cpp

@@ -46,7 +46,6 @@ namespace llvm {
   bool DisableJumpTables;
   bool StrongPHIElim;
   bool AsmVerbosityDefault(false);
-  bool DisableScheduling;
 }
 
 static cl::opt<bool, true>
@@ -198,11 +197,6 @@ EnableStrongPHIElim(cl::Hidden, "strong-phi-elim",
   cl::desc("Use strong PHI elimination."),
   cl::location(StrongPHIElim),
   cl::init(false));
-static cl::opt<bool, true>
-DisableInstScheduling("disable-scheduling",
-  cl::desc("Disable instruction scheduling"),
-  cl::location(DisableScheduling),
-  cl::init(false));
 
 //---------------------------------------------------------------------------
 // TargetMachine Class