Create PTX backend. Patch by Che-Liang Chiou!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113235 91177308-0d34-0410-b5e6-96231b3b80d8

autoconf/configure.ac

@@ -332,6 +332,7 @@ AC_CACHE_CHECK([target architecture],[llvm_cv_target_arch],
   s390x-*)                llvm_cv_target_arch="SystemZ" ;;
   bfin-*)                 llvm_cv_target_arch="Blackfin" ;;
   mblaze-*)               llvm_cv_target_arch="MBlaze" ;;
+  ptx-*)                  llvm_cv_target_arch="PTX" ;;
   *)                      llvm_cv_target_arch="Unknown" ;;
 esac])
 
@@ -469,6 +470,7 @@ else
     SystemZ)     AC_SUBST(TARGET_HAS_JIT,0) ;;
     Blackfin)    AC_SUBST(TARGET_HAS_JIT,0) ;;
     MBlaze)      AC_SUBST(TARGET_HAS_JIT,0) ;;
+    PTX)         AC_SUBST(TARGET_HAS_JIT,0) ;;
     *)           AC_SUBST(TARGET_HAS_JIT,0) ;;
   esac
 fi
@@ -543,13 +545,13 @@ TARGETS_TO_BUILD=""
 AC_ARG_ENABLE([targets],AS_HELP_STRING([--enable-targets],
     [Build specific host targets: all or target1,target2,... Valid targets are:
      host, x86, x86_64, sparc, powerpc, alpha, arm, mips, spu, pic16,
-     xcore, msp430, systemz, blackfin, cbe, and cpp (default=all)]),,
+     xcore, msp430, systemz, blackfin, ptx, cbe, and cpp (default=all)]),,
     enableval=all)
 if test "$enableval" = host-only ; then
   enableval=host
 fi
 case "$enableval" in
-  all) TARGETS_TO_BUILD="X86 Sparc PowerPC Alpha ARM Mips CellSPU PIC16 XCore MSP430 SystemZ Blackfin CBackend CppBackend MBlaze" ;;
+  all) TARGETS_TO_BUILD="X86 Sparc PowerPC Alpha ARM Mips CellSPU PIC16 XCore MSP430 SystemZ Blackfin CBackend CppBackend MBlaze PTX" ;;
   *)for a_target in `echo $enableval|sed -e 's/,/ /g' ` ; do
       case "$a_target" in
         x86)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
@@ -568,6 +570,7 @@ case "$enableval" in
         cbe)      TARGETS_TO_BUILD="CBackend $TARGETS_TO_BUILD" ;;
         cpp)      TARGETS_TO_BUILD="CppBackend $TARGETS_TO_BUILD" ;;
         mblaze)   TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
+        ptx)      TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
         host) case "$llvm_cv_target_arch" in
             x86)         TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
             x86_64)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
@@ -583,6 +586,7 @@ case "$enableval" in
             MSP430)      TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
             s390x)       TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
             Blackfin)    TARGETS_TO_BUILD="Blackfin $TARGETS_TO_BUILD" ;;
+            PTX)         TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
             *)       AC_MSG_ERROR([Can not set target to build]) ;;
           esac ;;
         *) AC_MSG_ERROR([Unrecognized target $a_target]) ;;

include/llvm/ADT/Triple.h

@@ -65,6 +65,7 @@ public:
     x86_64,  // X86-64: amd64, x86_64
     xcore,   // XCore: xcore
     mblaze,  // MBlaze: mblaze
+    ptx,     // PTX: ptx
 
     InvalidArch
   };

lib/Support/Triple.cpp

@@ -41,6 +41,7 @@ const char *Triple::getArchTypeName(ArchType Kind) {
   case x86_64:  return "x86_64";
   case xcore:   return "xcore";
   case mblaze:  return "mblaze";
+  case ptx:     return "ptx";
   }
 
   return "<invalid>";
@@ -70,7 +71,10 @@ const char *Triple::getArchTypePrefix(ArchType Kind) {
 
   case x86:
   case x86_64:  return "x86";
+
   case xcore:   return "xcore";
+
+  case ptx:     return "ptx";
   }
 }
 
@@ -149,6 +153,8 @@ Triple::ArchType Triple::getArchTypeForLLVMName(StringRef Name) {
     return x86_64;
   if (Name == "xcore")
     return xcore;
+  if (Name == "ptx")
+    return ptx;
 
   return UnknownArch;
 }
@@ -187,6 +193,9 @@ Triple::ArchType Triple::getArchTypeForDarwinArchName(StringRef Str) {
       Str == "armv6" || Str == "armv7")
     return Triple::arm;
 
+  if (Str == "ptx")
+    return Triple::ptx;
+
   return Triple::UnknownArch;
 }
 
@@ -216,6 +225,8 @@ const char *Triple::getArchNameForAssembler() {
     return "armv6";
   if (Str == "armv7" || Str == "thumbv7")
     return "armv7";
+  if (Str == "ptx")
+    return "ptx";
   return NULL;
 }
 
@@ -266,6 +277,8 @@ Triple::ArchType Triple::ParseArch(StringRef ArchName) {
     return tce;
   else if (ArchName == "xcore")
     return xcore;
+  else if (ArchName == "ptx")
+    return ptx;
   else
     return UnknownArch;
 }

lib/Target/PTX/AsmPrinter/CMakeLists.txt

@@ -0,0 +1,6 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMPTXAsmPrinter
+  PTXAsmPrinter.cpp
+  )
+add_dependencies(LLVMPTXAsmPrinter PTXCodeGenTable_gen)

lib/Target/PTX/AsmPrinter/Makefile

@@ -0,0 +1,15 @@
+##===- lib/Target/PTX/AsmPrinter/Makefile ------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMPTXAsmPrinter
+
+# Hack: we need to include 'main' PTX target directory to grab private headers
+CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common

lib/Target/PTX/AsmPrinter/PTXAsmPrinter.cpp

@@ -0,0 +1,35 @@
+//===-- PTXAsmPrinter.cpp - PTX LLVM assembly writer ----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains a printer that converts from our internal representation
+// of machine-dependent LLVM code to PTX assembly language.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PTX.h"
+#include "PTXTargetMachine.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/Target/TargetRegistry.h"
+
+using namespace llvm;
+
+namespace {
+  class PTXAsmPrinter : public AsmPrinter {
+    public:
+      explicit PTXAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) :
+        AsmPrinter(TM, Streamer) {}
+      const char *getPassName() const { return "PTX Assembly Printer"; }
+  };
+} // namespace
+
+// Force static initialization.
+extern "C" void LLVMInitializePTXAsmPrinter()
+{
+  RegisterAsmPrinter<PTXAsmPrinter> X(ThePTXTarget);
+}

lib/Target/PTX/CMakeLists.txt

@@ -0,0 +1,6 @@
+set(LLVM_TARGET_DEFINITIONS PTX.td)
+
+add_llvm_target(PTXCodeGen
+  )
+
+target_link_libraries (LLVMPTXCodeGen LLVMSelectionDAG)

lib/Target/PTX/Makefile

@@ -0,0 +1,19 @@
+##===- lib/Target/PTX/Makefile -----------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../../..
+LIBRARYNAME = LLVMPTXCodeGen
+TARGET = PTX
+
+# Make sure that tblgen is run, first thing.
+BUILT_SOURCES =
+
+DIRS = AsmPrinter TargetInfo
+
+include $(LEVEL)/Makefile.common

lib/Target/PTX/PTX.h

@@ -0,0 +1,24 @@
+//===-- PTX.h - Top-level interface for PTX 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
+// PTX back-end.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef PTX_H
+#define PTX_H
+
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+  extern Target ThePTXTarget;
+} // namespace llvm;
+
+#endif // PTX_H

lib/Target/PTX/PTX.td

@@ -0,0 +1,10 @@
+//===- PTX.td - Describe the PTX Target Machine ---------------*- tblgen -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// This is the top level entry point for the PTX target.
+//===----------------------------------------------------------------------===//

lib/Target/PTX/PTXTargetMachine.cpp

@@ -0,0 +1,31 @@
+//===-- PTXTargetMachine.cpp - Define TargetMachine for PTX ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Top-level implementation for the PTX target.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PTX.h"
+#include "PTXTargetMachine.h"
+#include "llvm/Target/TargetRegistry.h"
+
+using namespace llvm;
+
+extern "C" void LLVMInitializePTXTarget()
+{
+  // Register the target
+  RegisterTargetMachine<PTXTargetMachine> X(ThePTXTarget);
+}
+
+PTXTargetMachine::PTXTargetMachine(const Target &T,
+                                   const std::string &TT,
+                                   const std::string &FS) :
+  LLVMTargetMachine(T, TT)
+{
+}

lib/Target/PTX/PTXTargetMachine.h

@@ -0,0 +1,27 @@
+//===-- PTXTargetMachine.h - Define TargetMachine for PTX -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the PTX specific subclass of TargetMachine.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef PTX_TARGET_MACHINE_H
+#define PTX_TARGET_MACHINE_H
+
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+  class PTXTargetMachine : public LLVMTargetMachine {
+    public:
+      PTXTargetMachine(const Target &T, const std::string &TT,
+                       const std::string &FS);
+  }; // class PTXTargetMachine
+} // namespace llvm
+
+#endif // PTX_TARGET_MACHINE_H

lib/Target/PTX/TargetInfo/CMakeLists.txt

@@ -0,0 +1,7 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMPTXInfo
+  PTXTargetInfo.cpp
+  )
+
+add_dependencies(LLVMPTXInfo PTXCodeGenTable_gen)

lib/Target/PTX/TargetInfo/Makefile

@@ -0,0 +1,15 @@
+##===- lib/Target/PTX/TargetInfo/Makefile ------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMPTXInfo
+
+# Hack: we need to include 'main' target directory to grab private headers
+CPPFLAGS = -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common

lib/Target/PTX/TargetInfo/PTXTargetInfo.cpp

@@ -0,0 +1,22 @@
+//===-- PTXTargetInfo.cpp - PTX Target Implementation ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PTX.h"
+#include "llvm/Module.h"
+#include "llvm/Target/TargetRegistry.h"
+
+using namespace llvm;
+
+Target llvm::ThePTXTarget;
+
+extern "C" void LLVMInitializePTXTargetInfo()
+{
+  // see llvm/ADT/Triple.h
+  RegisterTarget<Triple::ptx> X(ThePTXTarget, "ptx", "PTX");
+}