[NFC][AArch64] Split out backend features

This patch splits backend features currently
hidden behind architecture versions.

For example, currently the only way to activate
complex numbers extension is targeting an v8.3
architecture, where after the patch this extension
can be added separately.

This refactoring is required by the new command lines proposal:
http://lists.llvm.org/pipermail/llvm-dev/2018-September/126346.html

Reviewers: DavidSpickett, olista01, t.p.northover

Subscribers: kristof.beyls, bryanpkc, javed.absar, pbarrio

Differential revision: https://reviews.llvm.org/D54633

llvm-svn: 348121

1 files changed, 51 insertions, 0 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.h b/llvm/lib/Target/AArch64/AArch64Subtarget.h
index 7316ed69036..c5850e80274 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.h
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.h
@@ -83,6 +83,33 @@ protected:
   bool HasFP16FML = false;
   bool HasSPE = false;
 
+  // ARMv8.1 extensions
+  bool HasVH = false;
+  bool HasPAN = false;
+  bool HasLOR = false;
+
+  // ARMv8.2 extensions
+  bool HasPsUAO = false;
+  bool HasPAN_RWV = false;
+  bool HasCCPP = false;
+
+  // ARMv8.3 extensions
+  bool HasPA = false;
+  bool HasJS = false;
+  bool HasCCIDX = false;
+  bool HasComplxNum = false;
+
+  // ARMv8.4 extensions
+  bool HasNV = false;
+  bool HasRASv8_4 = false;
+  bool HasMPAM = false;
+  bool HasDIT = false;
+  bool HasTRACEV8_4 = false;
+  bool HasAM = false;
+  bool HasSEL2 = false;
+  bool HasTLB_RMI = false;
+  bool HasFMI = false;
+  bool HasRCPC_IMMO = false;
   // ARMv8.4 Crypto extensions
   bool HasSM4 = true;
   bool HasSHA3 = true;
@@ -349,6 +376,30 @@ public:
 
   bool useAA() const override { return UseAA; }
 
+  bool hasVH() const { return HasVH; }
+  bool hasPAN() const { return HasPAN; }
+  bool hasLOR() const { return HasLOR; }
+
+  bool hasPsUAO() const { return HasPsUAO; }
+  bool hasPAN_RWV() const { return HasPAN_RWV; }
+  bool hasCCPP() const { return HasCCPP; }
+
+  bool hasPA() const { return HasPA; }
+  bool hasJS() const { return HasJS; }
+  bool hasCCIDX() const { return HasCCIDX; }
+  bool hasComplxNum() const { return HasComplxNum; }
+
+  bool hasNV() const { return HasNV; }
+  bool hasRASv8_4() const { return HasRASv8_4; }
+  bool hasMPAM() const { return HasMPAM; }
+  bool hasDIT() const { return HasDIT; }
+  bool hasTRACEV8_4() const { return HasTRACEV8_4; }
+  bool hasAM() const { return HasAM; }
+  bool hasSEL2() const { return HasSEL2; }
+  bool hasTLB_RMI() const { return HasTLB_RMI; }
+  bool hasFMI() const { return HasFMI; }
+  bool hasRCPC_IMMO() const { return HasRCPC_IMMO; }
+
   bool useSmallAddressing() const {
     switch (TLInfo.getTargetMachine().getCodeModel()) {
       case CodeModel::Kernel: