This patch adds a new NVPTX back-end to LLVM which supports code generation for NVIDIA PTX 3.0. This back-end will (eventually) replace the current PTX back-end, while maintaining compatibility with it.

The new target machines are:

nvptx (old ptx32) => 32-bit PTX
nvptx64 (old ptx64) => 64-bit PTX

The sources are based on the internal NVIDIA NVPTX back-end, and
contain more functionality than the current PTX back-end currently
provides.

NV_CONTRIB

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156196 91177308-0d34-0410-b5e6-96231b3b80d8

59 files changed, 22983 insertions, 0 deletions

diff --git a/lib/Target/NVPTX/CMakeLists.txt b/lib/Target/NVPTX/CMakeLists.txt
new file mode 100644
index 0000000000..a32a78ac83
--- /dev/null
+++ b/lib/Target/NVPTX/CMakeLists.txt
@@ -0,0 +1,33 @@
+set(LLVM_TARGET_DEFINITIONS NVPTX.td)
+
+
+tablegen(LLVM NVPTXGenRegisterInfo.inc -gen-register-info)
+tablegen(LLVM NVPTXGenInstrInfo.inc -gen-instr-info)
+tablegen(LLVM NVPTXGenAsmWriter.inc -gen-asm-writer)
+tablegen(LLVM NVPTXGenDAGISel.inc -gen-dag-isel)
+tablegen(LLVM NVPTXGenSubtargetInfo.inc -gen-subtarget)
+add_public_tablegen_target(NVPTXCommonTableGen)
+
+set(NVPTXCodeGen_sources
+  NVPTXFrameLowering.cpp
+  NVPTXInstrInfo.cpp
+  NVPTXISelDAGToDAG.cpp
+  NVPTXISelLowering.cpp
+  NVPTXRegisterInfo.cpp
+  NVPTXSubtarget.cpp
+  NVPTXTargetMachine.cpp
+  NVPTXSplitBBatBar.cpp
+  NVPTXLowerAggrCopies.cpp
+  NVPTXutil.cpp
+  NVPTXAllocaHoisting.cpp
+  NVPTXAsmPrinter.cpp
+  NVPTXUtilities.cpp
+  VectorElementize.cpp
+  )
+
+add_llvm_target(NVPTXCodeGen ${NVPTXCodeGen_sources})
+
+
+add_subdirectory(TargetInfo)
+add_subdirectory(InstPrinter)
+add_subdirectory(MCTargetDesc)
diff --git a/lib/Target/NVPTX/InstPrinter/CMakeLists.txt b/lib/Target/NVPTX/InstPrinter/CMakeLists.txt
new file mode 100644
index 0000000000..ae4c751196
--- /dev/null
+++ b/lib/Target/NVPTX/InstPrinter/CMakeLists.txt
@@ -0,0 +1,7 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMNVPTXAsmPrinter
+  NVPTXInstPrinter.cpp
+  )
+
+add_dependencies(LLVMNVPTXAsmPrinter NVPTXCommonTableGen)
diff --git a/lib/Target/NVPTX/InstPrinter/LLVMBuild.txt b/lib/Target/NVPTX/InstPrinter/LLVMBuild.txt
new file mode 100644
index 0000000000..032b57347e
--- /dev/null
+++ b/lib/Target/NVPTX/InstPrinter/LLVMBuild.txt
@@ -0,0 +1,23 @@
+;===- ./lib/Target/NVPTX/InstPrinter/LLVMBuild.txt -------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Library
+name = NVPTXAsmPrinter
+parent = NVPTX
+required_libraries = MC Support
+add_to_library_groups = NVPTX
diff --git a/lib/Target/NVPTX/InstPrinter/Makefile b/lib/Target/NVPTX/InstPrinter/Makefile
new file mode 100644
index 0000000000..7b7865436b
--- /dev/null
+++ b/lib/Target/NVPTX/InstPrinter/Makefile
@@ -0,0 +1,15 @@
+##===- lib/Target/NVPTX/AsmPrinter/Makefile ----------------*- Makefile -*-===##
+#
+#											The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMNVPTXAsmPrinter
+
+# Hack: we need to include 'main' ptx target directory to grab private headers
+CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
diff --git a/lib/Target/NVPTX/InstPrinter/NVPTXInstPrinter.cpp b/lib/Target/NVPTX/InstPrinter/NVPTXInstPrinter.cpp
new file mode 100644
index 0000000000..10051c7680
--- /dev/null
+++ b/lib/Target/NVPTX/InstPrinter/NVPTXInstPrinter.cpp
@@ -0,0 +1 @@
+// Placeholder
diff --git a/lib/Target/NVPTX/LLVMBuild.txt b/lib/Target/NVPTX/LLVMBuild.txt
new file mode 100644
index 0000000000..e2d6ed2b89
--- /dev/null
+++ b/lib/Target/NVPTX/LLVMBuild.txt
@@ -0,0 +1,32 @@
+;===- ./lib/Target/NVPTX/LLVMBuild.txt -------------------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[common]
+subdirectories = InstPrinter MCTargetDesc TargetInfo
+
+[component_0]
+type = TargetGroup
+name = NVPTX
+parent = Target
+has_asmprinter = 1
+
+[component_1]
+type = Library
+name = NVPTXCodeGen
+parent = NVPTX
+required_libraries = Analysis AsmPrinter CodeGen Core MC NVPTXDesc NVPTXInfo SelectionDAG Support Target TransformUtils
+add_to_library_groups = NVPTX
diff --git a/lib/Target/NVPTX/MCTargetDesc/CMakeLists.txt b/lib/Target/NVPTX/MCTargetDesc/CMakeLists.txt
new file mode 100644
index 0000000000..a030d9f8f1
--- /dev/null
+++ b/lib/Target/NVPTX/MCTargetDesc/CMakeLists.txt
@@ -0,0 +1,9 @@
+add_llvm_library(LLVMNVPTXDesc
+  NVPTXMCAsmInfo.cpp
+  NVPTXMCTargetDesc.cpp
+  )
+
+add_dependencies(LLVMNVPTXDesc NVPTXCommonTableGen)
+
+# Hack: we need to include 'main' target directory to grab private headers
+#include_directories(${CMAKE_CURRENT_SOURCE_DIR}/.. ${CMAKE_CURRENT_BINARY_DIR}/..)
diff --git a/lib/Target/NVPTX/MCTargetDesc/LLVMBuild.txt b/lib/Target/NVPTX/MCTargetDesc/LLVMBuild.txt
new file mode 100644
index 0000000000..01a051a11a
--- /dev/null
+++ b/lib/Target/NVPTX/MCTargetDesc/LLVMBuild.txt
@@ -0,0 +1,23 @@
+;===- ./lib/Target/NVPTX/MCTargetDesc/LLVMBuild.txt ------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Library
+name = NVPTXDesc
+parent = NVPTX
+required_libraries = MC NVPTXAsmPrinter NVPTXInfo Support
+add_to_library_groups = NVPTX
diff --git a/lib/Target/NVPTX/MCTargetDesc/Makefile b/lib/Target/NVPTX/MCTargetDesc/Makefile
new file mode 100644
index 0000000000..31d06cb594
--- /dev/null
+++ b/lib/Target/NVPTX/MCTargetDesc/Makefile
@@ -0,0 +1,16 @@
+##===- lib/Target/NVPTX/TargetDesc/Makefile ----------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../../../..
+LIBRARYNAME = LLVMNVPTXDesc
+
+# Hack: we need to include 'main' target directory to grab private headers
+CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
diff --git a/lib/Target/NVPTX/MCTargetDesc/NVPTXBaseInfo.h b/lib/Target/NVPTX/MCTargetDesc/NVPTXBaseInfo.h
new file mode 100644
index 0000000000..454583850b
--- /dev/null
+++ b/lib/Target/NVPTX/MCTargetDesc/NVPTXBaseInfo.h
@@ -0,0 +1,88 @@
+//===-- NVPTXBaseInfo.h - Top-level definitions for NVPTX -------*- 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 small standalone helper functions and enum definitions for
+// the NVPTX target useful for the compiler back-end and the MC libraries.
+// As such, it deliberately does not include references to LLVM core
+// code gen types, passes, etc..
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef NVPTXBASEINFO_H
+#define NVPTXBASEINFO_H
+
+namespace llvm {
+
+enum AddressSpace {
+  ADDRESS_SPACE_GENERIC = 0,
+  ADDRESS_SPACE_GLOBAL = 1,
+  ADDRESS_SPACE_CONST_NOT_GEN = 2, // Not part of generic space
+  ADDRESS_SPACE_SHARED = 3,
+  ADDRESS_SPACE_CONST = 4,
+  ADDRESS_SPACE_LOCAL = 5,
+
+  // NVVM Internal
+  ADDRESS_SPACE_PARAM = 101
+};
+
+enum PropertyAnnotation {
+  PROPERTY_MAXNTID_X = 0,
+  PROPERTY_MAXNTID_Y,
+  PROPERTY_MAXNTID_Z,
+  PROPERTY_REQNTID_X,
+  PROPERTY_REQNTID_Y,
+  PROPERTY_REQNTID_Z,
+  PROPERTY_MINNCTAPERSM,
+  PROPERTY_ISTEXTURE,
+  PROPERTY_ISSURFACE,
+  PROPERTY_ISSAMPLER,
+  PROPERTY_ISREADONLY_IMAGE_PARAM,
+  PROPERTY_ISWRITEONLY_IMAGE_PARAM,
+  PROPERTY_ISKERNEL_FUNCTION,
+  PROPERTY_ALIGN,
+
+  // last property
+  PROPERTY_LAST
+};
+
+const unsigned AnnotationNameLen = 8; // length of each annotation name
+const char
+PropertyAnnotationNames[PROPERTY_LAST + 1][AnnotationNameLen + 1] = {
+  "maxntidx",               // PROPERTY_MAXNTID_X
+  "maxntidy",               // PROPERTY_MAXNTID_Y
+  "maxntidz",               // PROPERTY_MAXNTID_Z
+  "reqntidx",               // PROPERTY_REQNTID_X
+  "reqntidy",               // PROPERTY_REQNTID_Y
+  "reqntidz",               // PROPERTY_REQNTID_Z
+  "minctasm",               // PROPERTY_MINNCTAPERSM
+  "texture",                // PROPERTY_ISTEXTURE
+  "surface",                // PROPERTY_ISSURFACE
+  "sampler",                // PROPERTY_ISSAMPLER
+  "rdoimage",               // PROPERTY_ISREADONLY_IMAGE_PARAM
+  "wroimage",               // PROPERTY_ISWRITEONLY_IMAGE_PARAM
+  "kernel",                 // PROPERTY_ISKERNEL_FUNCTION
+  "align",                  // PROPERTY_ALIGN
+
+  // last property
+  "proplast",               // PROPERTY_LAST
+};
+
+// name of named metadata used for global annotations
+#if defined(__GNUC__)
+// As this is declared to be static but some of the .cpp files that
+// include NVVM.h do not use this array, gcc gives a warning when
+// compiling those .cpp files, hence __attribute__((unused)).
+__attribute__((unused))
+#endif
+static const char* NamedMDForAnnotations = "nvvm.annotations";
+
+}
+
+
+#endif
diff --git a/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.cpp b/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.cpp
new file mode 100644
index 0000000000..1d4166575d
--- /dev/null
+++ b/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.cpp
@@ -0,0 +1,63 @@
+//===-- NVPTXMCAsmInfo.cpp - NVPTX asm properties -------------------------===//
+//
+//                     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 declarations of the NVPTXMCAsmInfo properties.
+//
+//===----------------------------------------------------------------------===//
+
+#include "NVPTXMCAsmInfo.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Support/CommandLine.h"
+
+using namespace llvm;
+
+bool CompileForDebugging;
+
+// -debug-compile - Command line option to inform opt and llc passes to
+// compile for debugging
+static cl::opt<bool, true>
+Debug("debug-compile", cl::desc("Compile for debugging"), cl::Hidden,
+      cl::location(CompileForDebugging),
+      cl::init(false));
+
+void NVPTXMCAsmInfo::anchor() { }
+
+NVPTXMCAsmInfo::NVPTXMCAsmInfo(const Target &T, const StringRef &TT) {
+  Triple TheTriple(TT);
+  if (TheTriple.getArch() == Triple::nvptx64)
+    PointerSize = 8;
+
+  CommentString = "//";
+
+  PrivateGlobalPrefix = "$L__";
+
+  AllowPeriodsInName = false;
+
+  HasSetDirective = false;
+
+  HasSingleParameterDotFile = false;
+
+  InlineAsmStart = " inline asm";
+  InlineAsmEnd = " inline asm";
+
+  SupportsDebugInformation = CompileForDebugging;
+  HasDotTypeDotSizeDirective = false;
+
+  Data8bitsDirective = " .b8 ";
+  Data16bitsDirective = " .b16 ";
+  Data32bitsDirective = " .b32 ";
+  Data64bitsDirective = " .b64 ";
+  PrivateGlobalPrefix = "";
+  ZeroDirective =  " .b8";
+  AsciiDirective = " .b8";
+  AscizDirective = " .b8";
+
+  // @TODO: Can we just disable this?
+  GlobalDirective = "\t// .globl\t";
+}
diff --git a/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.h b/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.h
new file mode 100644
index 0000000000..82097daa4a
--- /dev/null
+++ b/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.h
@@ -0,0 +1,30 @@
+//===-- NVPTXMCAsmInfo.h - NVPTX asm properties ----------------*- 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 declaration of the NVPTXMCAsmInfo class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef NVPTX_MCASM_INFO_H
+#define NVPTX_MCASM_INFO_H
+
+#include "llvm/MC/MCAsmInfo.h"
+
+namespace llvm {
+class Target;
+class StringRef;
+
+class NVPTXMCAsmInfo : public MCAsmInfo {
+  virtual void anchor();
+public:
+  explicit NVPTXMCAsmInfo(const Target &T, const StringRef &TT);
+};
+} // namespace llvm
+
+#endif // NVPTX_MCASM_INFO_H
diff --git a/lib/Target/NVPTX/MCTargetDesc/NVPTXMCTargetDesc.cpp b/lib/Target/NVPTX/MCTargetDesc/NVPTXMCTargetDesc.cpp
new file mode 100644
index 0000000000..44aa01ca6e
--- /dev/null
+++ b/lib/Target/NVPTX/MCTargetDesc/NVPTXMCTargetDesc.cpp
@@ -0,0 +1,91 @@
+//===-- NVPTXMCTargetDesc.cpp - NVPTX 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 NVPTX specific target descriptions.
+//
+//===----------------------------------------------------------------------===//
+
+#include "NVPTXMCTargetDesc.h"
+#include "NVPTXMCAsmInfo.h"
+#include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/Support/TargetRegistry.h"
+
+#define GET_INSTRINFO_MC_DESC
+#include "NVPTXGenInstrInfo.inc"
+
+#define GET_SUBTARGETINFO_MC_DESC
+#include "NVPTXGenSubtargetInfo.inc"
+
+#define GET_REGINFO_MC_DESC
+#include "NVPTXGenRegisterInfo.inc"
+
+
+using namespace llvm;
+
+static MCInstrInfo *createNVPTXMCInstrInfo() {
+  MCInstrInfo *X = new MCInstrInfo();
+  InitNVPTXMCInstrInfo(X);
+  return X;
+}
+
+static MCRegisterInfo *createNVPTXMCRegisterInfo(StringRef TT) {
+  MCRegisterInfo *X = new MCRegisterInfo();
+  // PTX does not have a return address register.
+  InitNVPTXMCRegisterInfo(X, 0);
+  return X;
+}
+
+static MCSubtargetInfo *createNVPTXMCSubtargetInfo(StringRef TT, StringRef CPU,
+                                                   StringRef FS) {
+  MCSubtargetInfo *X = new MCSubtargetInfo();
+  InitNVPTXMCSubtargetInfo(X, TT, CPU, FS);
+  return X;
+}
+
+static MCCodeGenInfo *createNVPTXMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                               CodeModel::Model CM,
+                                               CodeGenOpt::Level OL) {
+  MCCodeGenInfo *X = new MCCodeGenInfo();
+  X->InitMCCodeGenInfo(RM, CM, OL);
+  return X;
+}
+
+
+// Force static initialization.
+extern "C" void LLVMInitializeNVPTXTargetMC() {
+  // Register the MC asm info.
+  RegisterMCAsmInfo<NVPTXMCAsmInfo> X(TheNVPTXTarget32);
+  RegisterMCAsmInfo<NVPTXMCAsmInfo> Y(TheNVPTXTarget64);
+
+  // Register the MC codegen info.
+  TargetRegistry::RegisterMCCodeGenInfo(TheNVPTXTarget32,
+                                        createNVPTXMCCodeGenInfo);
+  TargetRegistry::RegisterMCCodeGenInfo(TheNVPTXTarget64,
+                                        createNVPTXMCCodeGenInfo);
+
+  // Register the MC instruction info.
+  TargetRegistry::RegisterMCInstrInfo(TheNVPTXTarget32, createNVPTXMCInstrInfo);
+  TargetRegistry::RegisterMCInstrInfo(TheNVPTXTarget64, createNVPTXMCInstrInfo);
+
+  // Register the MC register info.
+  TargetRegistry::RegisterMCRegInfo(TheNVPTXTarget32,
+                                    createNVPTXMCRegisterInfo);
+  TargetRegistry::RegisterMCRegInfo(TheNVPTXTarget64,
+                                    createNVPTXMCRegisterInfo);
+
+  // Register the MC subtarget info.
+  TargetRegistry::RegisterMCSubtargetInfo(TheNVPTXTarget32,
+                                          createNVPTXMCSubtargetInfo);
+  TargetRegistry::RegisterMCSubtargetInfo(TheNVPTXTarget64,
+                                          createNVPTXMCSubtargetInfo);
+
+}
diff --git a/lib/Target/NVPTX/MCTargetDesc/NVPTXMCTargetDesc.h b/lib/Target/NVPTX/MCTargetDesc/NVPTXMCTargetDesc.h
new file mode 100644
index 0000000000..af95c76f92
--- /dev/null
+++ b/lib/Target/NVPTX/MCTargetDesc/NVPTXMCTargetDesc.h
@@ -0,0 +1,36 @@
+//===-- NVPTXMCTargetDesc.h - NVPTX 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 NVPTX specific target descriptions.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef NVPTXMCTARGETDESC_H
+#define NVPTXMCTARGETDESC_H
+
+namespace llvm {
+class Target;
+
+extern Target TheNVPTXTarget32;
+extern Target TheNVPTXTarget64;
+
+} // End llvm namespace
+
+// Defines symbolic names for PTX registers.
+#define GET_REGINFO_ENUM
+#include "NVPTXGenRegisterInfo.inc"
+
+// Defines symbolic names for the PTX instructions.
+#define GET_INSTRINFO_ENUM
+#include "NVPTXGenInstrInfo.inc"
+
+#define GET_SUBTARGETINFO_ENUM
+#include "NVPTXGenSubtargetInfo.inc"
+
+#endif
diff --git a/lib/Target/NVPTX/Makefile b/lib/Target/NVPTX/Makefile
new file mode 100644
index 0000000000..8db20ebed2
--- /dev/null
+++ b/lib/Target/NVPTX/Makefile
@@ -0,0 +1,23 @@
+##===- lib/Target/NVPTX/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 = LLVMNVPTXCodeGen
+TARGET = NVPTX
+
+# Make sure that tblgen is run, first thing.
+BUILT_SOURCES = NVPTXGenAsmWriter.inc \
+		NVPTXGenDAGISel.inc \
+		NVPTXGenInstrInfo.inc \
+		NVP