Added a new rule to handle the OpenCL backend: we comment it out in

google3, and enable it in github. This is because we haven't imported the backed in google3 just yet.
Change: 138689620

4 files changed, 172 insertions, 0 deletions

diff --git a/third_party/sycl/crosstool/BUILD b/third_party/sycl/crosstool/BUILD
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/third_party/sycl/crosstool/BUILD
diff --git a/third_party/sycl/crosstool/BUILD.tpl b/third_party/sycl/crosstool/BUILD.tpl
new file mode 100755
index 0000000000..f539a376c8
--- /dev/null
+++ b/third_party/sycl/crosstool/BUILD.tpl
@@ -0,0 +1,29 @@
+licenses(["notice"])  # Apache 2.0
+
+package(default_visibility = ["//visibility:public"])
+
+cc_toolchain_suite(
+    name = "toolchain",
+    toolchains = {
+        "local|compiler": ":cc-compiler-local",
+    },
+)
+
+cc_toolchain(
+    name = "cc-compiler-local",
+    all_files = ":empty",
+    compiler_files = ":empty",
+    cpu = "local",
+    dwp_files = ":empty",
+    dynamic_runtime_libs = [":empty"],
+    linker_files = ":empty",
+    objcopy_files = ":empty",
+    static_runtime_libs = [":empty"],
+    strip_files = ":empty",
+    supports_param_files = 0,
+)
+
+filegroup(
+    name = "empty",
+    srcs = [],
+)
diff --git a/third_party/sycl/crosstool/CROSSTOOL.tpl b/third_party/sycl/crosstool/CROSSTOOL.tpl
new file mode 100755
index 0000000000..2108a5b9f0
--- /dev/null
+++ b/third_party/sycl/crosstool/CROSSTOOL.tpl
@@ -0,0 +1,82 @@
+major_version: "local"
+minor_version: ""
+default_target_cpu: "same_as_host"
+
+default_toolchain {
+  cpu: "k8"
+  toolchain_identifier: "local_linux"
+}
+
+toolchain {
+  abi_version: "local"
+  abi_libc_version: "local"
+  builtin_sysroot: ""
+  compiler: "compiler"
+  host_system_name: "local"
+  needsPic: true
+  supports_gold_linker: false
+  supports_incremental_linker: false
+  supports_fission: false
+  supports_interface_shared_objects: false
+  supports_normalizing_ar: false
+  supports_start_end_lib: false
+  supports_thin_archives: false
+  target_libc: "local"
+  target_cpu: "local"
+  target_system_name: "local"
+  toolchain_identifier: "local_linux"
+
+  tool_path { name: "ar" path: "/usr/bin/ar" }
+  tool_path { name: "compat-ld" path: "/usr/bin/ld" }
+  tool_path { name: "cpp" path: "/usr/bin/cpp" }
+  tool_path { name: "dwp" path: "/usr/bin/dwp" }
+  tool_path { name: "gcc" path: "computecpp" }
+  # Use "-std=c++11" for nvcc. For consistency, force both the host compiler
+  # and the device compiler to use "-std=c++11".
+  cxx_flag: "-std=c++11"
+  linker_flag: "-lstdc++"
+  linker_flag: "-B/usr/bin/"
+
+  # TODO(bazel-team): In theory, the path here ought to exactly match the path
+  # used by gcc. That works because bazel currently doesn't track files at
+  # absolute locations and has no remote execution, yet. However, this will need
+  # to be fixed, maybe with auto-detection?
+  cxx_builtin_include_directory: "/usr/lib/gcc/"
+  cxx_builtin_include_directory: "/usr/lib"
+  cxx_builtin_include_directory: "/usr/lib64"
+  cxx_builtin_include_directory: "/usr/local/include"
+  cxx_builtin_include_directory: "/usr/include"
+
+  cxx_builtin_include_directory: "%{computecpp_toolkit_path}"
+
+  tool_path { name: "gcov" path: "/usr/bin/gcov" }
+
+  # C(++) compiles invoke the compiler (as that is the one knowing where
+  # to find libraries), but we provide LD so other rules can invoke the linker.
+  tool_path { name: "ld" path: "/usr/bin/ld" }
+
+  tool_path { name: "nm" path: "/usr/bin/nm" }
+  tool_path { name: "objcopy" path: "/usr/bin/objcopy" }
+  objcopy_embed_flag: "-I"
+  objcopy_embed_flag: "binary"
+  tool_path { name: "objdump" path: "/usr/bin/objdump" }
+  tool_path { name: "strip" path: "/usr/bin/strip" }
+
+  # Make C++ compilation deterministic. Use linkstamping instead of these
+  # compiler symbols.
+  unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
+  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
+  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
+
+  # All warnings are enabled. Maybe enable -Werror as well?
+  compiler_flag: "-Wall"
+
+  # Anticipated future default.
+  linker_flag: "-Wl,-no-as-needed"
+  # Stamp the binary with a unique identifier.
+  linker_flag: "-Wl,--build-id=md5"
+  linker_flag: "-Wl,--hash-style=gnu"
+
+  linking_mode_flags { mode: DYNAMIC }
+}
diff --git a/third_party/sycl/crosstool/computecpp.tpl b/third_party/sycl/crosstool/computecpp.tpl
new file mode 100755
index 0000000000..4860e9f0a0
--- /dev/null
+++ b/third_party/sycl/crosstool/computecpp.tpl
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+
+from argparse import ArgumentParser
+import os
+import subprocess
+import re
+import sys
+import pipes
+
+CPU_CXX_COMPILER = ('%{host_cxx_compiler}')
+CPU_C_COMPILER = ('%{host_c_compiler}')
+
+CURRENT_DIR = os.path.dirname(sys.argv[0])
+COMPUTECPP_ROOT = CURRENT_DIR +"/../sycl/"
+COMPUTECPP_DRIVER= COMPUTECPP_ROOT+"bin/compute++"
+COMPUTECPP_INCLUDE = COMPUTECPP_ROOT+"include"
+
+def main():
+  computecpp_compiler_flags = [""]
+  computecpp_compiler_flags = [flag for flag in sys.argv[1:]]
+  computecpp_compiler_flags = computecpp_compiler_flags + ["-D_GLIBCXX_USE_CXX11_ABI=0"]
+
+  output_file_index = computecpp_compiler_flags.index("-o") +1
+  output_file_name = computecpp_compiler_flags[output_file_index]
+
+  if(output_file_index == 1):
+    # we are linking
+    return subprocess.call([CPU_CXX_COMPILER] +computecpp_compiler_flags )
+
+  # find what we compile
+  compiling_cpp = 0
+  if("-c" in computecpp_compiler_flags):
+      compiled_file_index = computecpp_compiler_flags.index("-c") +1
+      compited_file_name = computecpp_compiler_flags[compiled_file_index]
+      if(compited_file_name.endswith(('.cc', '.c++', '.cpp', '.CPP', '.C', '.cxx'))):
+          compiling_cpp = 1;
+
+  if(compiling_cpp == 1):
+      filename, file_extension = os.path.splitext(output_file_name)
+      bc_out = filename + ".sycl"
+
+      computecpp_compiler_flags = ['-DTENSORFLOW_USE_SYCL', '-Wno-unused-variable','-I', COMPUTECPP_INCLUDE,'-isystem',
+      COMPUTECPP_INCLUDE, "-std=c++11", "-sycl", "-emit-llvm", "-no-serial-memop"] + computecpp_compiler_flags
+
+      # dont want that in case of compiling with computecpp first
+      host_compiler_flags = [""]
+      host_compiler_flags = [flag for flag in sys.argv[1:]
+                                if not flag.startswith(('-MF','-MD',))
+                                if not ".d" in flag]
+
+      x = subprocess.call([COMPUTECPP_DRIVER] +computecpp_compiler_flags )
+      if(x == 0):
+          host_compiler_flags = ['-DTENSORFLOW_USE_SYCL', '-Wno-unused-variable', '-I', COMPUTECPP_INCLUDE, "--include",bc_out] + host_compiler_flags
+          return subprocess.call([CPU_CXX_COMPILER] +host_compiler_flags )
+      return x
+  else:
+    # compile for C
+    return subprocess.call([CPU_C_COMPILER] +computecpp_compiler_flags)
+
+if __name__ == '__main__':
+  sys.exit(main())