Per discussion with Sanjiv, remove the PIC16 target from mainline. When/if

it comes back, it will be largely a rewrite, so keeping the old codebase
in tree isn't helping anyone.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116190 91177308-0d34-0410-b5e6-96231b3b80d8

6 files changed, 1 insertions, 491 deletions

diff --git a/tools/llvmc/examples/Makefile b/tools/llvmc/examples/Makefile
index 8468e93104..8f300a6738 100644
--- a/tools/llvmc/examples/Makefile
+++ b/tools/llvmc/examples/Makefile
@@ -9,6 +9,6 @@
 
 LEVEL=../../..
 
-PARALLEL_DIRS := Hello Simple mcc16 Skeleton
+PARALLEL_DIRS := Hello Simple Skeleton
 
 include $(LEVEL)/Makefile.common
diff --git a/tools/llvmc/examples/mcc16/Hooks.cpp b/tools/llvmc/examples/mcc16/Hooks.cpp
deleted file mode 100644
index edb91e16aa..0000000000
--- a/tools/llvmc/examples/mcc16/Hooks.cpp
+++ /dev/null
@@ -1,109 +0,0 @@
-#include "llvm/System/Path.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/raw_ostream.h"
-
-#include <string>
-
-namespace llvmc {
-  extern char *ProgramName;
-
-  namespace autogenerated {
-    extern llvm::cl::opt<std::string> Parameter_p;
-  }
-}
-
-using namespace llvm;
-using namespace llvmc;
-
-// Returns the platform specific directory separator via #ifdefs.
-// FIXME: This currently work on linux and windows only. It does not
-// work on other unices.
-static std::string GetDirSeparator() {
-#if __linux__ || __APPLE__
-  return "/";
-#else
-  return "\\";
-#endif
-}
-
-namespace hooks {
-// Get preprocessor define for the part.
-// It is __partname format in lower case.
-std::string
-GetLowerCasePartDefine(void) {
-  std::string Partname;
-  if (autogenerated::Parameter_p.empty()) {
-    Partname = "16f1xxx";
-  } else {
-    Partname = autogenerated::Parameter_p;
-  }
-
-  std::string LowerCase;
-  for (unsigned i = 0; i < Partname.size(); i++) {
-    LowerCase.push_back(std::tolower(Partname[i]));
-  }
-
-  return "__" + LowerCase;
-}
-
-std::string
-GetUpperCasePartDefine(void) {
-  std::string Partname;
-  if (autogenerated::Parameter_p.empty()) {
-    Partname = "16f1xxx";
-  } else {
-    Partname = autogenerated::Parameter_p;
-  }
-
-  std::string UpperCase;
-  for (unsigned i = 0; i < Partname.size(); i++) {
-    UpperCase.push_back(std::toupper(Partname[i]));
-  }
-
-  return "__" +  UpperCase;
-}
-
-// Get the dir where c16 executables reside.
-std::string GetBinDir() {
-  // Construct a Path object from the program name.
-  void *P = (void*) (intptr_t) GetBinDir;
-  sys::Path ProgramFullPath
-    = sys::Path::GetMainExecutable(llvmc::ProgramName, P);
-
-  // Get the dir name for the program. It's last component should be 'bin'.
-  std::string BinDir = ProgramFullPath.getDirname();
-
-  // llvm::errs() << "BinDir: " << BinDir << '\n';
-  return BinDir + GetDirSeparator();
-}
-
-// Get the Top-level Installation dir for c16.
-std::string GetInstallDir() {
-  sys::Path BinDirPath = sys::Path(GetBinDir());
-
-  // Go one more level up to get the install dir.
-  std::string InstallDir  = BinDirPath.getDirname();
-
-  return InstallDir + GetDirSeparator();
-}
-
-// Get the dir where the c16 header files reside.
-std::string GetStdHeadersDir() {
-  return GetInstallDir() + "include";
-}
-
-// Get the dir where the assembler header files reside.
-std::string GetStdAsmHeadersDir() {
-  return GetInstallDir() + "inc";
-}
-
-// Get the dir where the linker scripts reside.
-std::string GetStdLinkerScriptsDir() {
-  return GetInstallDir() + "lkr";
-}
-
-// Get the dir where startup code, intrinsics and lib reside.
-std::string GetStdLibsDir() {
-  return GetInstallDir() + "lib";
-}
-}
diff --git a/tools/llvmc/examples/mcc16/Main.cpp b/tools/llvmc/examples/mcc16/Main.cpp
deleted file mode 100644
index 55ae912839..0000000000
--- a/tools/llvmc/examples/mcc16/Main.cpp
+++ /dev/null
@@ -1,57 +0,0 @@
-//===--- Main.cpp - The LLVM Compiler Driver -------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open
-// Source License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  Usually this file just includes CompilerDriver/Main.inc, but here we apply
-//  some trickery to make the built-in '-save-temps' option hidden and enable
-//  '--temp-dir' by default.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/CompilerDriver/BuiltinOptions.h"
-#include "llvm/CompilerDriver/Main.h"
-
-#include "llvm/System/Path.h"
-#include "llvm/Config/config.h"
-
-#include <iostream>
-
-#include "PIC16.inc"
-
-namespace {
-
-// Modify the PACKAGE_VERSION to use build number in top level configure file.
-void PIC16VersionPrinter(void) {
-  std::cout << "MPLAB C16 1.0 " << PACKAGE_VERSION << "\n";
-}
-
-}
-
-int main(int argc, char** argv) {
-
-  // HACK
-  SaveTemps.setHiddenFlag(llvm::cl::Hidden);
-  TempDirname.setHiddenFlag(llvm::cl::Hidden);
-  Languages.setHiddenFlag(llvm::cl::Hidden);
-  DryRun.setHiddenFlag(llvm::cl::Hidden);
-
-  llvm::cl::SetVersionPrinter(PIC16VersionPrinter);
-
-  // Ask for a standard temp dir, but just cache its basename., and delete it.
-  llvm::sys::Path tempDir;
-  tempDir = llvm::sys::Path::GetTemporaryDirectory();
-  TempDirname = tempDir.getBasename();
-  tempDir.eraseFromDisk(true);
-
-  // We are creating a temp dir in current dir, with the cached name.
-  //  But before that remove if one already exists with that name..
-  tempDir = TempDirname;
-  tempDir.eraseFromDisk(true);
-
-  return llvmc::Main(argc, argv);
-}
diff --git a/tools/llvmc/examples/mcc16/Makefile b/tools/llvmc/examples/mcc16/Makefile
deleted file mode 100644
index 4409cffb55..0000000000
--- a/tools/llvmc/examples/mcc16/Makefile
+++ /dev/null
@@ -1,15 +0,0 @@
-##===- llvmc/examples/mcc16/Makefile -----------------------*- Makefile -*-===##
-#
-#                     The LLVM Compiler Infrastructure
-#
-# This file is distributed under the University of Illinois Open Source
-# License. See LICENSE.TXT for details.
-#
-##===----------------------------------------------------------------------===##
-
-LEVEL = ../../../..
-
-LLVMC_BASED_DRIVER = mcc16
-BUILT_SOURCES = PIC16.inc
-
-include $(LEVEL)/Makefile.common
diff --git a/tools/llvmc/examples/mcc16/PIC16.td b/tools/llvmc/examples/mcc16/PIC16.td
deleted file mode 100644
index 6f0419675e..0000000000
--- a/tools/llvmc/examples/mcc16/PIC16.td
+++ /dev/null
@@ -1,234 +0,0 @@
-//===- PIC16.td - PIC16 toolchain driver -------------------*- tablegen -*-===//
-//
-// A basic driver for the PIC16 toolchain.
-//
-//===----------------------------------------------------------------------===//
-
-include "llvm/CompilerDriver/Common.td"
-
-// Options
-
-def OptionList : OptionList<[
- (switch_option "g",
-    (help "Enable Debugging")),
- (switch_option "E",
-    (help "Stop after preprocessing, do not compile")),
- (switch_option "S",
-    (help "Stop after compilation, do not assemble")),
- (switch_option "bc",
-    (help "Stop after b-code generation, do not compile")),
- (switch_option "c",
-    (help "Stop after assemble, do not link")),
- (prefix_option "p",
-    (help "Specify part name")),
- (prefix_list_option "I",
-    (help "Add a directory to include path")),
- (prefix_list_option "L",
-    (help "Add a directory to library path")),
- (prefix_list_option "K",
-    (help "Add a directory to linker script search path")),
- (parameter_option "l",
-    (help "Specify a library to link")),
- (parameter_option "k",
-    (help "Specify a linker script")),
- (parameter_option "m",
-    (help "Generate linker map file with the given name")),
- (prefix_list_option "D",
-    (help "Define a macro")),
- (switch_option "X",
-    (help "Do not invoke mp2hex to create an output hex file.")),
- (switch_option "O0",
-    (help "Do not optimize")),
- (switch_option "O1",
-    (help "Optimization Level 1.")),
- (switch_option "O2",
-    (help "Optimization Level 2.")),
- (switch_option "O3",
-    (help "Optimization Level 3.")),
- (switch_option "Od",
-    (help "Perform Debug-safe Optimizations only.")),
- (switch_option "w",
-    (help "Disable all warnings.")),
-// (switch_option "O1",
-//    (help "Optimization level 1")),
-// (switch_option "O2",
-//    (help "Optimization level 2. (Default)")),
-// (parameter_option "pre-RA-sched",
-//    (help "Example of an option that is passed to llc")),
- (parameter_option "regalloc",
-    (help "Register allocator to use (possible values: simple, linearscan, pbqp, local; default=linearscan)")),
- (prefix_list_option "Wa,", (comma_separated),
-    (help "Pass options to assembler (Run 'gpasm -help' for assembler options)")),
- (prefix_list_option "Wl,", (comma_separated),
-    (help "Pass options to linker (Run 'mplink -help' for linker options)"))
-// (prefix_list_option "Wllc,",
-//    (help "Pass options to llc")),
-// (prefix_list_option "Wo,",
-//    (help "Pass options to llvm-ld"))
-]>;
-
-// Tools
-class clang_based<string language, string cmd, string ext_E> : Tool<
-[(in_language language),
- (out_language "llvm-bitcode"),
- (output_suffix "bc"),
- (command cmd),
- (actions (case
-                (and (multiple_input_files),
-                     (or (switch_on "S"), (switch_on "c"))),
-                  (error "cannot specify -o with -c or -S with multiple files"),
-                (switch_on "E"), [(forward "E"),
-                                  (stop_compilation), (output_suffix ext_E)],
-                (and (switch_on "E"), (empty "o")), (no_out_file),
-                (switch_on "bc"),[(stop_compilation), (output_suffix "bc")],
-                (switch_on "g"), (append_cmd "-g"),
-                (switch_on "w"), (append_cmd "-w"),
-                (switch_on "O1"), (append_cmd ""),
-                (switch_on "O2"), (append_cmd ""),
-                (switch_on "O3"), (append_cmd ""),
-                (switch_on "Od"), (append_cmd ""),
-                (not_empty "D"), (forward "D"),
-                (not_empty "I"), (forward "I"),
-                (switch_on "O0"), (append_cmd "-O0"),
-                (default), (append_cmd "-O1")))
-// (sink)
-]>;
-
-def clang_cc : clang_based<"c", "$CALL(GetBinDir)clang -cc1                                                        -I $CALL(GetStdHeadersDir)                                                      -D $CALL(GetLowerCasePartDefine)                                                -D $CALL(GetUpperCasePartDefine) -triple=pic16-                                 -emit-llvm-bc ", "i">;
-
-//def clang_cc : Tool<[
-// (in_language "c"),
-// (out_language "llvm-bitcode"),
-// (output_suffix "bc"),
-// (cmd_line "$CALL(GetBinDir)clang-cc -I $CALL(GetStdHeadersDir) -triple=pic16- -emit-llvm-bc "),
-// (cmd_line kkkkk
-// (actions (case
-//          (switch_on "g"), (append_cmd "g"),
-//          (not_empty "I"), (forward "I"))),
-// (sink)
-//]>;
-
-
-// pre-link-and-lto step.
-def llvm_ld : Tool<[
- (in_language "llvm-bitcode"),
- (out_language "llvm-bitcode"),
- (output_suffix "bc"),
- (command "$CALL(GetBinDir)llvm-ld -L $CALL(GetStdLibsDir) -disable-licm-promotion -l std"),
- (out_file_option "-b"),
- (actions (case
-          (switch_on "O0"), (append_cmd "-disable-opt"),
-          (switch_on "O1"), (append_cmd "-disable-opt"),
-// Whenever O3 is not specified on the command line, default i.e. disable-inlining will always be added.
-          (switch_on "O2"), (append_cmd ""),
-          (switch_on "O3"), (append_cmd ""),
-          (default), (append_cmd "-disable-inlining"))),
- (join)
-]>;
-
-// optimize single file
-def llvm_ld_optimizer : Tool<[
- (in_language "llvm-bitcode"),
- (out_language "llvm-bitcode"),
- (output_suffix "bc"),
-// FIXME: we are still not disabling licm-promotion.
-// -disable-licm-promotion and building stdn library causes c16-71 to fail.
- (command "$CALL(GetBinDir)llvm-ld "),
- (out_file_option "-b"),
- (actions (case
-          (switch_on "O0"), (append_cmd "-disable-opt"),
-          (switch_on "O1"), (append_cmd "-disable-opt"),
-// Whenever O3 is not specified on the command line, default i.e. disable-inlining will always be added.
-          (switch_on "O2"), (append_cmd ""),
-          (switch_on "O3"), (append_cmd ""),
-          (default), (append_cmd "-disable-inlining")))
-]>;
-
-// optimizer step.
-def pic16passes : Tool<[
- (in_language "llvm-bitcode"),
- (out_language "llvm-bitcode"),
- (output_suffix "obc"),
- (command "$CALL(GetBinDir)opt -pic16cloner -pic16overlay -f"),
- (actions (case
-          (switch_on "O0"), (append_cmd "-disable-opt")))
-]>;
-
-def llc : Tool<[
- (in_language "llvm-bitcode"),
- (out_language "assembler"),
- (output_suffix "s"),
- (command "$CALL(GetBinDir)llc -march=pic16 -disable-jump-tables -pre-RA-sched=list-burr -f"),
- (actions (case
-          (switch_on "S"), (stop_compilation),
-//          (not_empty "Wllc,"), (unpack_values "Wllc,"),
-//         (not_empty "pre-RA-sched"), (forward "pre-RA-sched")))
-         (not_empty "regalloc"), (forward "regalloc"),
-         (empty "regalloc"), (append_cmd "-regalloc=linearscan")))
-]>;
-
-def gpasm : Tool<[
- (in_language "assembler"),
- (out_language "object-code"),
- (output_suffix "o"),
- (command "$CALL(GetBinDir)gpasm -z -r decimal -I $CALL(GetStdAsmHeadersDir) -C -c -w 2"),
- (actions (case
-          (switch_on "c"), (stop_compilation),
-          (switch_on "g"), (append_cmd "-g"),
-          (not_empty "p"), (forward "p"),
-          (empty "p"), (append_cmd "-p 16f1xxx"),
-          (not_empty "Wa,"), (forward_value "Wa,")))
-]>;
-
-def mplink : Tool<[
- (in_language "object-code"),
- (out_language "executable"),
- (output_suffix "cof"),
- (command "$CALL(GetBinDir)mplink -e -k $CALL(GetStdLinkerScriptsDir) -l $CALL(GetStdLibsDir) intrinsics.lib stdn.lib"),
- (actions (case
-          (not_empty "Wl,"), (forward_value "Wl,"),
-          (switch_on "X"), (append_cmd "-x"),
-          (not_empty "L"), (forward_as "L", "-l"),
-          (not_empty "K"), (forward_as "K", "-k"),
-          (not_empty "m"), (forward "m"),
-          (not_empty "p"), [(forward "p"), (append_cmd "-c")],
-          (empty "p"), (append_cmd "-p 16f1xxx -c"),
-//          (not_empty "l"), [(unpack_values "l"),(append_cmd ".lib")])),
-          (not_empty "k"), (forward "k"),
-          (not_empty "l"), (forward "l"))),
- (join)
-]>;
-
-// Language map
-
-def LanguageMap : LanguageMap<[
-    (lang_to_suffixes "c", "c"),
-    (lang_to_suffixes "c-cpp-output", "i"),
-    (lang_to_suffixes "assembler", "s"),
-    (lang_to_suffixes "assembler-with-cpp", "S"),
-    (lang_to_suffixes "llvm-assembler", "ll"),
-    (lang_to_suffixes "llvm-bitcode", "bc"),
-    (lang_to_suffixes "object-code", "o"),
-    (lang_to_suffixes "executable", "cof")
-]>;
-
-// Compilation graph
-
-def CompilationGraph : CompilationGraph<[
-    (edge "root", "clang_cc"),
-    (edge "root", "llvm_ld"),
-    (optional_edge "root", "llvm_ld_optimizer",
-                   (case (switch_on "S"), (inc_weight),
-                         (switch_on "c"), (inc_weight))),
-    (edge "root", "gpasm"),
-    (edge "root", "mplink"),
-    (edge "clang_cc", "llvm_ld"),
-    (optional_edge "clang_cc", "llvm_ld_optimizer",
-                   (case (switch_on "S"), (inc_weight),
-                         (switch_on "c"), (inc_weight))),
-    (edge "llvm_ld", "pic16passes"),
-    (edge "llvm_ld_optimizer", "pic16passes"),
-    (edge "pic16passes", "llc"),
-    (edge "llc", "gpasm"),
-    (edge "gpasm", "mplink")
-]>;
diff --git a/tools/llvmc/examples/mcc16/README b/tools/llvmc/examples/mcc16/README
deleted file mode 100644
index 6d2b73d5d9..0000000000
--- a/tools/llvmc/examples/mcc16/README
+++ /dev/null
@@ -1,75 +0,0 @@
-This is a basic compiler driver for the PIC16 toolchain that shows how to create
-your own llvmc-based drivers. It is based on the examples/Skeleton template.
-
-The PIC16 toolchain looks like this:
-
-clang-cc (FE) -> llvm-ld (optimizer) -> llc (codegen) -> native-as -> native-ld
-
-Following features were requested by Sanjiv:
-
-From: Sanjiv Gupta <sanjiv.gupta <at> microchip.com>
-Subject: Re: llvmc for PIC16
-Newsgroups: gmane.comp.compilers.llvm.devel
-Date: 2009-06-05 06:51:14 GMT
-
-The salient features that we want to have in the driver are:
-1. llvm-ld will be used as "The Optimizer".
-2. If the user has specified to generate the final executable, then
-llvm-ld should run on all the .bc files generated by clang and create a
-single optimized .bc file for further tools.
-3. -Wo <options> - pass optimizations to the llvm-ld
-4. mcc16 -Wl <options> - pass options to native linker.
-5. mcc16 -Wa <options> - pass options to native assembler.
-
-Here are some example command lines and sample command invocations as to
-what should be done.
-
-$ mcc16 -S foo.c
-// [clang-cc foo.c] -> foo.bc
-// [llvm-ld foo.bc] -> foo.opt.bc
-// [llc foo.opt.bc] -> foo.s
-
-$ mcc16 -S foo.c bar.c
-// [clang-cc foo.c] -> foo.bc
-// [llvm-ld foo.bc] -> foo.opt.bc
-// [llc foo.opt.bc] -> foo.s
-// [clang-cc bar.c] -> bar.bc
-// [llvm-ld bar.bc] -> bar.opt.bc
-// [llc bar.opt.bc] -> bar.s
-
-** Use of -g causes llvm-ld to run with -disable-opt
-$ mcc16 -S -g foo.c
-// [clang-cc foo.c] -> foo.bc
-// [llvm-ld -disable-opt foo.bc] -> foo.opt.bc
-// [llc foo.opt.bc] -> foo.s
-
-** -I is passed to clang-cc, -pre-RA-sched=list-burr to llc.
-$ mcc16 -S -g -I ../include -pre-RA-sched=list-burr foo.c
-// [clang-cc -I ../include foo.c] -> foo.bc
-// [llvm-ld -disable-opt foo.bc] -> foo.opt.bc
-// [llc -pre-RA-sched=list-burr foo.opt.bc] -> foo.s
-
-** -Wo passes options to llvm-ld
-$ mcc16 -Wo=opt1,opt2 -S -I ../include -pre-RA-sched=list-burr foo.c
-// [clang-cc -I ../include foo.c] -> foo.bc
-// [llvm-ld -opt1 -opt2 foo.bc] -> foo.opt.bc
-// [llc -pre-RA-sched=list-burr foo.opt.bc] -> foo.s
-
-** -Wa passes options to native as.
-$ mcc16 -c foo.c -Wa=opt1
-// [clang-cc foo.c] -> foo.bc
-// [llvm-ld foo.bc] -> foo.opt.bc
-// [llc foo.opt.bc] -> foo.s
-// [native-as -opt1 foo.s] -> foo.o
-
-$ mcc16 -Wo=opt1 -Wl=opt2 -Wa=opt3 foo.c bar.c
-// [clang-cc foo.c] -> foo.bc
-// [clang-cc bar.c] -> bar.bc
-// [llvm-ld -opt1 foo.bc bar.bc] -> a.out.bc
-// [llc a.out.bc] -> a.out.s
-// [native-as -opt3 a.out.s] -> a.out.o
-// [native-ld -opt2 a.out.o] -> a.out
-
-Is this achievable by a tablegen based driver ?
-
-- Sanjiv