[Nios2] Target registration

Reviewers: craig.topper, hfinkel, joerg, lattner, zvi

Reviewed By: craig.topper

Subscribers: oren_ben_simhon, igorb, belickim, tvvikram, mgorny, llvm-commits, pavel.v.chupin, DavidKreitzer

Differential Revision: https://reviews.llvm.org/D32669
Patch by AndreiGrischenko <andrei.l.grischenko@intel.com>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304144 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ADT/Triple.h

@@ -59,6 +59,7 @@ class Triple {
     mips64,         // MIPS64: mips64
     mips64el,       // MIPS64EL: mips64el
     msp430,         // MSP430: msp430
+    nios2,          // NIOSII: nios2
     ppc,            // PPC: powerpc
     ppc64,          // PPC64: powerpc64, ppu
     ppc64le,        // PPC64LE: powerpc64le

lib/Support/Triple.cpp

@@ -34,6 +34,7 @@ StringRef Triple::getArchTypeName(ArchType Kind) {
   case mips64:         return "mips64";
   case mips64el:       return "mips64el";
   case msp430:         return "msp430";
+  case nios2:          return "nios2";
   case ppc64:          return "powerpc64";
   case ppc64le:        return "powerpc64le";
   case ppc:            return "powerpc";
@@ -98,6 +99,8 @@ StringRef Triple::getArchTypePrefix(ArchType Kind) {
   case mips64:
   case mips64el:    return "mips";
 
+  case nios2:       return "nios2";
+
   case hexagon:     return "hexagon";
 
   case amdgcn:      return "amdgcn";
@@ -262,6 +265,7 @@ Triple::ArchType Triple::getArchTypeForLLVMName(StringRef Name) {
     .Case("mips64", mips64)
     .Case("mips64el", mips64el)
     .Case("msp430", msp430)
+    .Case("nios2", nios2)
     .Case("ppc64", ppc64)
     .Case("ppc32", ppc)
     .Case("ppc", ppc)
@@ -384,6 +388,7 @@ static Triple::ArchType parseArch(StringRef ArchName) {
     .Cases("mipsel", "mipsallegrexel", Triple::mipsel)
     .Cases("mips64", "mips64eb", Triple::mips64)
     .Case("mips64el", Triple::mips64el)
+    .Case("nios2", Triple::nios2)
     .Case("r600", Triple::r600)
     .Case("amdgcn", Triple::amdgcn)
     .Case("riscv32", Triple::riscv32)
@@ -625,6 +630,7 @@ static Triple::ObjectFormatType getDefaultFormat(const Triple &T) {
   case Triple::mips64el:
   case Triple::mipsel:
   case Triple::msp430:
+  case Triple::nios2:
   case Triple::nvptx:
   case Triple::nvptx64:
   case Triple::ppc64le:
@@ -1162,6 +1168,7 @@ static unsigned getArchPointerBitWidth(llvm::Triple::ArchType Arch) {
   case llvm::Triple::le32:
   case llvm::Triple::mips:
   case llvm::Triple::mipsel:
+  case llvm::Triple::nios2:
   case llvm::Triple::nvptx:
   case llvm::Triple::ppc:
   case llvm::Triple::r600:
@@ -1245,6 +1252,7 @@ Triple Triple::get32BitArchVariant() const {
   case Triple::le32:
   case Triple::mips:
   case Triple::mipsel:
+  case Triple::nios2:
   case Triple::nvptx:
   case Triple::ppc:
   case Triple::r600:
@@ -1292,6 +1300,7 @@ Triple Triple::get64BitArchVariant() const {
   case Triple::kalimba:
   case Triple::lanai:
   case Triple::msp430:
+  case Triple::nios2:
   case Triple::r600:
   case Triple::tce:
   case Triple::tcele:
@@ -1363,6 +1372,7 @@ Triple Triple::getBigEndianArchVariant() const {
   case Triple::le32:
   case Triple::le64:
   case Triple::msp430:
+  case Triple::nios2:
   case Triple::nvptx64:
   case Triple::nvptx:
   case Triple::r600:
@@ -1449,6 +1459,7 @@ bool Triple::isLittleEndian() const {
   case Triple::mips64el:
   case Triple::mipsel:
   case Triple::msp430:
+  case Triple::nios2:
   case Triple::nvptx64:
   case Triple::nvptx:
   case Triple::ppc64le:

lib/Target/LLVMBuild.txt

@@ -29,6 +29,7 @@ subdirectories =
  MSP430
  NVPTX
  Mips
+ Nios2
  PowerPC
  RISCV
  Sparc

lib/Target/Nios2/CMakeLists.txt

@@ -0,0 +1,18 @@
+set(LLVM_TARGET_DEFINITIONS Nios2.td)
+
+#Generate Nios2GenRegisterInfo.inc and Nios2GenInstrInfo.inc which included by
+#your hand code C++ files.
+#Nios2GenRegisterInfo.inc came from Nios2RegisterInfo.td, Nios2GenInstrInfo.inc
+#came from Nios2InstrInfo.td.
+tablegen(LLVM Nios2GenRegisterInfo.inc -gen-register-info)
+tablegen(LLVM Nios2GenInstrInfo.inc -gen-instr-info)
+
+#Nios2CommonTableGen must be defined
+add_public_tablegen_target(Nios2CommonTableGen)
+
+#Nios2CodeGen should match with LLVMBuild.txt Nios2CodeGen
+add_llvm_target(Nios2CodeGen Nios2TargetMachine.cpp)
+
+#Should match with "subdirectories =  MCTargetDesc TargetInfo" in LLVMBuild.txt
+add_subdirectory(TargetInfo)
+add_subdirectory(MCTargetDesc)

lib/Target/Nios2/LLVMBuild.txt

@@ -0,0 +1,61 @@
+;===- ./lib/Target/Nios2/LLVMBuild.txt -------------------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+#Following comments extracted from http: // llvm.org/docs/LLVMBuild.html
+
+[common]
+subdirectories =
+    MCTargetDesc
+    TargetInfo
+
+[component_0]
+#TargetGroup components are an extension of LibraryGroups, specifically for
+#defining LLVM targets(which are handled specially in a few places).
+type = TargetGroup
+#The name of the component should always be the name of the target.(should
+#match "def Nios2 : Target" in Nios2.td)
+name = Nios2
+#Nios2 component is located in directory Target /
+parent = Target
+#Whether this target defines an assembly parser, assembly printer, disassembler
+#, and supports JIT compilation.They are optional.
+
+[component_1]
+#component_1 is a Library type and name is Nios2CodeGen.After build it will
+#in lib / libLLVMNios2CodeGen.a of your build command directory.
+type = Library
+name = Nios2CodeGen
+#Nios2CodeGen component(Library) is located in directory Nios2 /
+parent = Nios2
+#If given, a list of the names of Library or LibraryGroup components which
+#must also be linked in whenever this library is used.That is, the link time
+#dependencies for this component.When tools are built, the build system will
+#include the transitive closure of all required_libraries for the components
+#the tool needs.
+required_libraries = CodeGen
+                     Core
+                     GlobalISel
+                     MC
+                     Nios2Desc
+                     Nios2Info
+                     Support
+                     Target
+#end of required_libraries
+
+#All LLVMBuild.txt in Target / Nios2 and subdirectory use 'add_to_library_groups
+#= Nios2'
+add_to_library_groups = Nios2

lib/Target/Nios2/MCTargetDesc/CMakeLists.txt

@@ -0,0 +1,2 @@
+#MCTargetDesc / CMakeLists.txt
+add_llvm_library(LLVMNios2Desc Nios2MCTargetDesc.cpp)

lib/Target/Nios2/MCTargetDesc/LLVMBuild.txt

@@ -0,0 +1,25 @@
+;===- ./lib/Target/Nios2/MCTargetDesc/LLVMBuild.txt ------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Library
+name = Nios2Desc
+parent = Nios2
+required_libraries = MC 
+                     Nios2Info 
+                     Support
+add_to_library_groups = Nios2

lib/Target/Nios2/MCTargetDesc/Nios2MCTargetDesc.cpp

@@ -0,0 +1,25 @@
+//===-- Nios2MCTargetDesc.cpp - Nios2 Target Descriptions -----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides Nios2 specific target descriptions.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Nios2MCTargetDesc.h"
+#include "llvm/MC/MCInstrInfo.h"
+
+using namespace llvm;
+
+#define GET_INSTRINFO_MC_DESC
+#include "Nios2GenInstrInfo.inc"
+
+#define GET_REGINFO_MC_DESC
+#include "Nios2GenRegisterInfo.inc"
+
+extern "C" void LLVMInitializeNios2TargetMC() {}

lib/Target/Nios2/MCTargetDesc/Nios2MCTargetDesc.h

@@ -0,0 +1,34 @@
+//===-- Nios2MCTargetDesc.h - Nios2 Target Descriptions ---------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides Nios2 specific target descriptions.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_NIOS2_MCTARGETDESC_NIOS2MCTARGETDESC_H
+#define LLVM_LIB_TARGET_NIOS2_MCTARGETDESC_NIOS2MCTARGETDESC_H
+
+namespace llvm {
+class Target;
+class Triple;
+
+Target &getTheNios2Target();
+
+} // namespace llvm
+
+// Defines symbolic names for Nios2 registers.  This defines a mapping from
+// register name to register number.
+#define GET_REGINFO_ENUM
+#include "Nios2GenRegisterInfo.inc"
+
+// Defines symbolic names for the Nios2 instructions.
+#define GET_INSTRINFO_ENUM
+#include "Nios2GenInstrInfo.inc"
+
+#endif

lib/Target/Nios2/Nios2.h

@@ -0,0 +1,25 @@
+//===-- Nios2.h - Top-level interface for Nios2 representation --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the entry points for global functions defined in
+// the LLVM Nios2 back-end.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_NIOS2_NIOS2_H
+#define LLVM_LIB_TARGET_NIOS2_NIOS2_H
+
+#include "MCTargetDesc/Nios2MCTargetDesc.h"
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+class Nios2TargetMachine;
+} // namespace llvm
+
+#endif

lib/Target/Nios2/Nios2.td

@@ -0,0 +1,29 @@
+//===-- Nios2.td - Describe the Nios2 Target Machine -------*- tablegen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Target-independent interfaces
+//===----------------------------------------------------------------------===//
+
+include "llvm/Target/Target.td"
+
+//===----------------------------------------------------------------------===//
+// Target-dependent interfaces
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Calling Conv, Instruction Descriptions
+//===----------------------------------------------------------------------===//
+
+include "Nios2RegisterInfo.td"
+include "Nios2InstrInfo.td"
+
+def Nios2InstrInfo : InstrInfo;
+
+def Nios2 : Target { let InstructionSet = Nios2InstrInfo; }