Remove the TII::scheduleTwoAddrSource() hook.

It never does anything when running 'make check', and it get's in the
way of updating live intervals in 2-addr.

The hook was originally added to help form IT blocks in Thumb2 code
before register allocation, but the pass ordering has changed since
then, and we run if-conversion after register allocation now.

When the MI scheduler is enabled, there will be no less than two
schedulers between 2-addr and Thumb2ITBlockPass, so this hook is
unlikely to help anything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161794 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 8 deletions

diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h
index 0fab9347b3..a18b0305a9 100644
--- a/include/llvm/Target/TargetInstrInfo.h
+++ b/include/llvm/Target/TargetInstrInfo.h
@@ -188,14 +188,6 @@ public:
                              const MachineInstr *Orig,
                              const TargetRegisterInfo &TRI) const = 0;
 
-  /// scheduleTwoAddrSource - Schedule the copy / re-mat of the source of the
-  /// two-addrss instruction inserted by two-address pass.
-  virtual void scheduleTwoAddrSource(MachineInstr *SrcMI,
-                                     MachineInstr *UseMI,
-                                     const TargetRegisterInfo &TRI) const {
-    // Do nothing.
-  }
-
   /// duplicate - Create a duplicate of the Orig instruction in MF. This is like
   /// MachineFunction::CloneMachineInstr(), but the target may update operands
   /// that are required to be unique.