[ARM] Replace HasT2ExtractPack with HasDSP

Removed the HasT2ExtractPack feature and replaced its references
with HasDSP. This then allows the Thumb2 extend instructions to be
selected for ARMv8M +dsp. These instruction descriptions have also
been refactored and more target tests have been added for their isel.

Differential Revision: https://reviews.llvm.org/D29623

llvm-svn: 295452

1 files changed, 0 insertions, 5 deletions

diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index c7315235a66..ae672930f38 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -213,10 +213,6 @@ protected:
   /// HasHardwareDivideInARM - True if subtarget supports [su]div in ARM mode
   bool HasHardwareDivideInARM = false;
 
-  /// HasT2ExtractPack - True if subtarget supports thumb2 extract/pack
-  /// instructions.
-  bool HasT2ExtractPack = false;
-
   /// HasDataBarrier - True if the subtarget supports DMB / DSB data barrier
   /// instructions.
   bool HasDataBarrier = false;
@@ -508,7 +504,6 @@ public:
 
   bool hasDivide() const { return HasHardwareDivide; }
   bool hasDivideInARMMode() const { return HasHardwareDivideInARM; }
-  bool hasT2ExtractPack() const { return HasT2ExtractPack; }
   bool hasDataBarrier() const { return HasDataBarrier; }
   bool hasV7Clrex() const { return HasV7Clrex; }
   bool hasAcquireRelease() const { return HasAcquireRelease; }