Revert "[GlobalISel] Import patterns containing INSERT_SUBREG"

When EXPENSIVE_CHECKS are enabled, GlobalISelEmitterSubreg.td doesn't get
stable output.

Reverting while I debug it.

See: https://reviews.llvm.org/D66498
llvm-svn: 370080

1 files changed, 0 insertions, 6 deletions

diff --git a/llvm/utils/TableGen/CodeGenTarget.h b/llvm/utils/TableGen/CodeGenTarget.h
index d52ffac4ce6..1ab2de269c7 100644
--- a/llvm/utils/TableGen/CodeGenTarget.h
+++ b/llvm/utils/TableGen/CodeGenTarget.h
@@ -103,12 +103,6 @@ public:
   /// getRegBank - Return the register bank description.
   CodeGenRegBank &getRegBank() const;
 
-  /// Return the largest register class on \p RegBank which supports \p Ty and
-  /// covers \p SubIdx if it exists.
-  Optional<CodeGenRegisterClass *>
-  getSuperRegForSubReg(const ValueTypeByHwMode &Ty, CodeGenRegBank &RegBank,
-                       const CodeGenSubRegIndex *SubIdx) const;
-
   /// getRegisterByName - If there is a register with the specific AsmName,
   /// return it.
   const CodeGenRegister *getRegisterByName(StringRef Name) const;