[WebAssembly] Initial WebAssembly backend

This WebAssembly backend is just a skeleton at this time and is not yet
functional.

llvm-svn: 241022

4 files changed, 74 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/TargetInfo/CMakeLists.txt b/llvm/lib/Target/WebAssembly/TargetInfo/CMakeLists.txt
new file mode 100644
index 00000000000..ef6e4d2b617
--- /dev/null
+++ b/llvm/lib/Target/WebAssembly/TargetInfo/CMakeLists.txt
@@ -0,0 +1,7 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMWebAssemblyInfo
+  WebAssemblyTargetInfo.cpp
+  )
+
+add_dependencies(LLVMWebAssemblyInfo WebAssemblyCommonTableGen)
diff --git a/llvm/lib/Target/WebAssembly/TargetInfo/LLVMBuild.txt b/llvm/lib/Target/WebAssembly/TargetInfo/LLVMBuild.txt
new file mode 100644
index 00000000000..f4da9239bbe
--- /dev/null
+++ b/llvm/lib/Target/WebAssembly/TargetInfo/LLVMBuild.txt
@@ -0,0 +1,23 @@
+;===- ./lib/Target/WebAssembly/TargetInfo/LLVMBuild.txt --------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Library
+name = WebAssemblyInfo
+parent = WebAssembly
+required_libraries = Support
+add_to_library_groups = WebAssembly
diff --git a/llvm/lib/Target/WebAssembly/TargetInfo/Makefile b/llvm/lib/Target/WebAssembly/TargetInfo/Makefile
new file mode 100644
index 00000000000..b021eb6d945
--- /dev/null
+++ b/llvm/lib/Target/WebAssembly/TargetInfo/Makefile
@@ -0,0 +1,15 @@
+##===- lib/Target/WebAssembly/TargetInfo/Makefile ----------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMWebAssemblyInfo
+
+# Hack: we need to include 'main' target directory to grab private headers
+CPPFLAGS = -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
diff --git a/llvm/lib/Target/WebAssembly/TargetInfo/WebAssemblyTargetInfo.cpp b/llvm/lib/Target/WebAssembly/TargetInfo/WebAssemblyTargetInfo.cpp
new file mode 100644
index 00000000000..fb339b95512
--- /dev/null
+++ b/llvm/lib/Target/WebAssembly/TargetInfo/WebAssemblyTargetInfo.cpp
@@ -0,0 +1,29 @@
+//===-- WebAssemblyTargetInfo.cpp - WebAssembly Target Implementation -----===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file registers the WebAssembly target.
+///
+//===----------------------------------------------------------------------===//
+
+#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Support/TargetRegistry.h"
+using namespace llvm;
+
+#define DEBUG_TYPE "wasm-target-info"
+
+Target llvm::TheWebAssemblyTarget;
+
+extern "C" void LLVMInitializeWebAssemblyTargetInfo() {
+  RegisterTarget<Triple::wasm32> X(TheWebAssemblyTarget, "wasm32",
+                                   "WebAssembly 32-bit");
+  RegisterTarget<Triple::wasm64> Y(TheWebAssemblyTarget, "wasm64",
+                                   "WebAssembly 64-bit");
+}