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

13 files changed, 230 insertions, 0 deletions

diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index 3a95b65e69..365c083695 100644
--- a/lib/Support/Triple.cpp
+++ b/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;
 }
diff --git a/lib/Target/PTX/AsmPrinter/CMakeLists.txt b/lib/Target/PTX/AsmPrinter/CMakeLists.txt
new file mode 100644
index 0000000000..3f4257b444
--- /dev/null
+++ b/lib/Target/PTX/AsmPrinter/CMakeLists.txt
@@ -0,0 +1,6 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMPTXAsmPrinter
+  PTXAsmPrinter.cpp
+  )
+add_dependencies(LLVMPTXAsmPrinter PTXCodeGenTable_gen)
diff --git a/lib/Target/PTX/AsmPrinter/Makefile b/lib/Target/PTX/AsmPrinter/Makefile
new file mode 100644
index 0000000000..67ee3bc34b
--- /dev/null
+++ b/lib/Target/PTX/AsmPrinter/Makefile
@@ -0,0 +1,15 @@
+##===- lib/Target/PTX/AsmPrinter/Makefile ------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMPTXAsmPrinter
+
+# Hack: we need to include 'main' PTX target directory to grab private headers
+CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
diff --git a/lib/Target/PTX/AsmPrinter/PTXAsmPrinter.cpp b/lib/Target/PTX/AsmPrinter/PTXAsmPrinter.cpp
new file mode 100644
index 0000000000..1a723a22e9
--- /dev/null
+++ b/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);
+}
diff --git a/lib/Target/PTX/CMakeLists.txt b/lib/Target/PTX/CMakeLists.txt
new file mode 100644
index 0000000000..6505e067f6
--- /dev/null
+++ b/lib/Target/PTX/CMakeLists.txt
@@ -0,0 +1,6 @@
+set(LLVM_TARGET_DEFINITIONS PTX.td)
+
+add_llvm_target(PTXCodeGen
+  )
+
+target_link_libraries (LLVMPTXCodeGen LLVMSelectionDAG)
diff --git a/lib/Target/PTX/Makefile b/lib/Target/PTX/Makefile
new file mode 100644
index 0000000000..fcbf9317a9
--- /dev/null
+++ b/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
diff --git a/lib/Target/PTX/PTX.h b/lib/Target/PTX/PTX.h
new file mode 100644
index 0000000000..0a7b49ece2
--- /dev/null
+++ b/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
diff --git a/lib/Target/PTX/PTX.td b/lib/Target/PTX/PTX.td
new file mode 100644
index 0000000000..5def467e64
--- /dev/null
+++ b/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.
+//===----------------------------------------------------------------------===//
diff --git a/lib/Target/PTX/PTXTargetMachine.cpp b/lib/Target/PTX/PTXTargetMachine.cpp
new file mode 100644
index 0000000000..1889df41dc
--- /dev/null
+++ b/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)
+{
+}
diff --git a/lib/Target/PTX/PTXTargetMachine.h b/lib/Target/PTX/PTXTargetMachine.h
new file mode 100644
index 0000000000..c447b87478
--- /dev/null
+++ b/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
diff --git a/lib/Target/PTX/TargetInfo/CMakeLists.txt b/lib/Target/PTX/TargetInfo/CMakeLists.txt
new file mode 100644
index 0000000000..4b09cf5ce0
--- /dev/null
+++ b/lib/Target/PTX/TargetInfo/CMakeLists.txt
@@ -0,0 +1,7 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMPTXInfo
+  PTXTargetInfo.cpp
+  )
+
+add_dependencies(LLVMPTXInfo PTXCodeGenTable_gen)
diff --git a/lib/Target/PTX/TargetInfo/Makefile b/lib/Target/PTX/TargetInfo/Makefile
new file mode 100644
index 0000000000..8619785889
--- /dev/null
+++ b/lib/Target/PTX/TargetInfo/Makefile
@@ -0,0 +1,15 @@
+##===- lib/Target/PTX/TargetInfo/Makefile ------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMPTXInfo
+
+# Hack: we need to include 'main' target directory to grab private headers
+CPPFLAGS = -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
diff --git a/lib/Target/PTX/TargetInfo/PTXTargetInfo.cpp b/lib/Target/PTX/TargetInfo/PTXTargetInfo.cpp
new file mode 100644
index 0000000000..9000ae70e4
--- /dev/null
+++ b/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");
+}