Remove the canCombineSubRegIndices() target hook.

The new coalescer can already do all of this, so there is no need to
duplicate the efforts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166813 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 12 deletions

diff --git a/include/llvm/Target/TargetRegisterInfo.h b/include/llvm/Target/TargetRegisterInfo.h
index 942ee44827..0ccf9f4b63 100644
--- a/include/llvm/Target/TargetRegisterInfo.h
+++ b/include/llvm/Target/TargetRegisterInfo.h
@@ -446,18 +446,6 @@ public:
     return MCRegisterInfo::getMatchingSuperReg(Reg, SubIdx, RC->MC);
   }
 
-  /// canCombineSubRegIndices - Given a register class and a list of
-  /// subregister indices, return true if it's possible to combine the
-  /// subregister indices into one that corresponds to a larger
-  /// subregister. Return the new subregister index by reference. Note the
-  /// new index may be zero if the given subregisters can be combined to
-  /// form the whole register.
-  virtual bool canCombineSubRegIndices(const TargetRegisterClass *RC,
-                                       SmallVectorImpl<unsigned> &SubIndices,
-                                       unsigned &NewSubIdx) const {
-    return 0;
-  }
-
   /// getMatchingSuperRegClass - Return a subclass of the specified register
   /// class A so that each register in it has a sub-register of the
   /// specified sub-register index which is in the specified register class B.