Add subtarget caches to aarch64, arm, ppc, and x86.

These will make it easier to test further changes to the
code generation and optimization pipelines as those are
moved to subtargets initialized with target feature and
target cpu.

llvm-svn: 219106

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64TargetMachine.h b/llvm/lib/Target/AArch64/AArch64TargetMachine.h
index 42d7dc57328..7bf40ae165b 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetMachine.h
+++ b/llvm/lib/Target/AArch64/AArch64TargetMachine.h
@@ -24,6 +24,7 @@ namespace llvm {
 class AArch64TargetMachine : public LLVMTargetMachine {
 protected:
   AArch64Subtarget Subtarget;
+  mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap;
 
 public:
   AArch64TargetMachine(const Target &T, StringRef TT, StringRef CPU,
@@ -34,6 +35,7 @@ public:
   const AArch64Subtarget *getSubtargetImpl() const override {
     return &Subtarget;
   }
+  const AArch64Subtarget *getSubtargetImpl(const Function &F) const override;
 
   // Pass Pipeline Configuration
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
@@ -45,6 +47,7 @@ public:
   bool isPBQPUsed() const { return usingPBQP; }
 
 private:
+  bool isLittle;
   bool usingPBQP;
 };