vendor/llvm/llvm-trunk-r290819

1 files changed, 53 insertions, 0 deletions

diff --git a/include/llvm/CodeGen/GlobalISel/InstructionSelect.h b/include/llvm/CodeGen/GlobalISel/InstructionSelect.h
new file mode 100644
index 0000000000000..01521c46ab6aa
--- /dev/null
+++ b/include/llvm/CodeGen/GlobalISel/InstructionSelect.h
@@ -0,0 +1,53 @@
+//== llvm/CodeGen/GlobalISel/InstructionSelect.h -----------------*- C++ -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file This file describes the interface of the MachineFunctionPass
+/// responsible for selecting (possibly generic) machine instructions to
+/// target-specific instructions.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_GLOBALISEL_INSTRUCTIONSELECT_H
+#define LLVM_CODEGEN_GLOBALISEL_INSTRUCTIONSELECT_H
+
+#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
+
+namespace llvm {
+/// This pass is responsible for selecting generic machine instructions to
+/// target-specific instructions.  It relies on the InstructionSelector provided
+/// by the target.
+/// Selection is done by examining blocks in post-order, and instructions in
+/// reverse order.
+///
+/// \post for all inst in MF: not isPreISelGenericOpcode(inst.opcode)
+class InstructionSelect : public MachineFunctionPass {
+public:
+  static char ID;
+  StringRef getPassName() const override { return "InstructionSelect"; }
+
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+
+  MachineFunctionProperties getRequiredProperties() const override {
+    return MachineFunctionProperties()
+        .set(MachineFunctionProperties::Property::IsSSA)
+        .set(MachineFunctionProperties::Property::Legalized)
+        .set(MachineFunctionProperties::Property::RegBankSelected);
+  }
+
+  MachineFunctionProperties getSetProperties() const override {
+    return MachineFunctionProperties().set(
+        MachineFunctionProperties::Property::Selected);
+  }
+
+  InstructionSelect();
+
+  bool runOnMachineFunction(MachineFunction &MF) override;
+};
+} // End namespace llvm.
+
+#endif