[ARM] GlobalISel: Get rid of ARMInstructionSelector.h. NFC.

Declare the ARMInstructionSelector in an anonymous namespace, to make it
more in line with the other targets which were migrated to this in
r299637 in order to avoid TableGen'erated headers being included in
non-GlobalISel builds.

llvm-svn: 301632

3 files changed, 31 insertions, 3 deletions

diff --git a/llvm/lib/Target/ARM/ARM.h b/llvm/lib/Target/ARM/ARM.h
index 39f7988200e..8d136edc262 100644
--- a/llvm/lib/Target/ARM/ARM.h
+++ b/llvm/lib/Target/ARM/ARM.h
@@ -23,9 +23,12 @@ namespace llvm {
 
 class ARMAsmPrinter;
 class ARMBaseTargetMachine;
+class ARMRegisterBankInfo;
+class ARMSubtarget;
 struct BasicBlockInfo;
 class Function;
 class FunctionPass;
+class InstructionSelector;
 class MachineBasicBlock;
 class MachineFunction;
 class MachineInstr;
@@ -43,6 +46,9 @@ FunctionPass *createThumb2ITBlockPass();
 FunctionPass *createARMOptimizeBarriersPass();
 FunctionPass *createThumb2SizeReductionPass(
     std::function<bool(const Function &)> Ftor = nullptr);
+InstructionSelector *
+createARMInstructionSelector(const ARMSubtarget &STI,
+                             const ARMRegisterBankInfo &RBI);
 
 void LowerARMMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
                                   ARMAsmPrinter &AP);
diff --git a/llvm/lib/Target/ARM/ARMInstructionSelector.cpp b/llvm/lib/Target/ARM/ARMInstructionSelector.cpp
index 1c13d51a468..8ce8e322fe0 100644
--- a/llvm/lib/Target/ARM/ARMInstructionSelector.cpp
+++ b/llvm/lib/Target/ARM/ARMInstructionSelector.cpp
@@ -11,10 +11,10 @@
 /// \todo This should be generated by TableGen.
 //===----------------------------------------------------------------------===//
 
-#include "ARMInstructionSelector.h"
 #include "ARMRegisterBankInfo.h"
 #include "ARMSubtarget.h"
 #include "ARMTargetMachine.h"
+#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/Support/Debug.h"
 
@@ -26,6 +26,29 @@ using namespace llvm;
 #error "You shouldn't build this"
 #endif
 
+namespace {
+class ARMInstructionSelector : public InstructionSelector {
+public:
+  ARMInstructionSelector(const ARMSubtarget &STI,
+                         const ARMRegisterBankInfo &RBI);
+
+  bool select(MachineInstr &I) const override;
+
+private:
+  const ARMBaseInstrInfo &TII;
+  const ARMBaseRegisterInfo &TRI;
+  const ARMRegisterBankInfo &RBI;
+};
+} // end anonymous namespace
+
+namespace llvm {
+InstructionSelector *
+createARMInstructionSelector(const ARMSubtarget &STI,
+                             const ARMRegisterBankInfo &RBI) {
+  return new ARMInstructionSelector(STI, RBI);
+}
+}
+
 ARMInstructionSelector::ARMInstructionSelector(const ARMSubtarget &STI,
                                                const ARMRegisterBankInfo &RBI)
     : InstructionSelector(), TII(*STI.getInstrInfo()),
diff --git a/llvm/lib/Target/ARM/ARMTargetMachine.cpp b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
index b8dadb331ec..5bf827cc390 100644
--- a/llvm/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
@@ -12,7 +12,6 @@
 
 #include "ARM.h"
 #include "ARMCallLowering.h"
-#include "ARMInstructionSelector.h"
 #include "ARMLegalizerInfo.h"
 #include "ARMRegisterBankInfo.h"
 #include "ARMSubtarget.h"
@@ -339,7 +338,7 @@ ARMBaseTargetMachine::getSubtargetImpl(const Function &F) const {
     // FIXME: At this point, we can't rely on Subtarget having RBI.
     // It's awkward to mix passing RBI and the Subtarget; should we pass
     // TII/TRI as well?
-    GISel->InstSelector.reset(new ARMInstructionSelector(*I, *RBI));
+    GISel->InstSelector.reset(createARMInstructionSelector(*I, *RBI));
 
     GISel->RegBankInfo.reset(RBI);
 #endif