[ARM] Do not test for CPUs, use SubtargetFeatures (Part 1). NFCI

This is a cleanup commit similar to r271555, but for ARM.

The end goal is to get rid of the isSwift / isCortexXY / isWhatever methods.

Since the ARM backend seems to have quite a lot of calls to these methods, I
intend to submit 5-6 subtarget features at a time, instead of one big lump.

Differential Revision: http://reviews.llvm.org/D21432

llvm-svn: 273544

1 files changed, 24 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index 1eeb6224206..3c1797d858a 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -218,6 +218,24 @@ protected:
   /// particularly effective at zeroing a VFP register.
   bool HasZeroCycleZeroing;
 
+  /// If true, if conversion may decide to leave some instructions unpredicated.
+  bool IsProfitableToUnpredicate;
+
+  /// If true, VMOV will be favored over VGETLNi32.
+  bool HasSlowVGETLNi32;
+
+  /// If true, VMOV will be favored over VDUP.
+  bool HasSlowVDUP32;
+
+  /// If true, VMOVSR will be favored over VMOVDRR.
+  bool PreferVMOVSR;
+
+  /// If true, ISHST barriers will be used for Release semantics.
+  bool PreferISHST;
+
+  /// If true, VMOVRS, VMOVSR and VMOVS will be converted from VFP to NEON.
+  bool UseNEONForFPMovs;
+
   /// StrictAlign - If true, the subtarget disallows unaligned memory
   /// accesses for some types.  For details, see
   /// ARMTargetLowering::allowsMisalignedMemoryAccesses().
@@ -376,6 +394,12 @@ public:
   bool hasTrustZone() const { return HasTrustZone; }
   bool has8MSecExt() const { return Has8MSecExt; }
   bool hasZeroCycleZeroing() const { return HasZeroCycleZeroing; }
+  bool isProfitableToUnpredicate() const { return IsProfitableToUnpredicate; }
+  bool hasSlowVGETLNi32() const { return HasSlowVGETLNi32; }
+  bool hasSlowVDUP32() const { return HasSlowVDUP32; }
+  bool preferVMOVSR() const { return PreferVMOVSR; }
+  bool preferISHSTBarriers() const { return PreferISHST; }
+  bool useNEONForFPMovs() const { return UseNEONForFPMovs; }
   bool prefers32BitThumb() const { return Pref32BitThumb; }
   bool avoidCPSRPartialUpdate() const { return AvoidCPSRPartialUpdate; }
   bool avoidMOVsShifterOperand() const { return AvoidMOVsShifterOperand; }