Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 298 insertions, 0 deletions

diff --git a/js/src/jit/GenerateLIRFiles.py b/js/src/jit/GenerateLIRFiles.py
new file mode 100644
index 0000000000..86882966fd
--- /dev/null
+++ b/js/src/jit/GenerateLIRFiles.py
@@ -0,0 +1,298 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This script generates jit/LIROpsGenerated.h (list of LIR instructions)
+# from LIROps.yaml.
+
+from collections import OrderedDict
+
+import buildconfig
+import six
+import yaml
+from mozbuild.preprocessor import Preprocessor
+
+HEADER_TEMPLATE = """\
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef %(includeguard)s
+#define %(includeguard)s
+
+/* This file is generated by jit/GenerateLIRFiles.py. Do not edit! */
+
+%(contents)s
+
+#endif // %(includeguard)s
+"""
+
+
+def load_yaml(yaml_path):
+    # First invoke preprocessor.py so that we can use #ifdef JS_SIMULATOR in
+    # the YAML file.
+    pp = Preprocessor()
+    pp.context.update(buildconfig.defines["ALLDEFINES"])
+    pp.out = six.StringIO()
+    pp.do_filter("substitution")
+    pp.do_include(yaml_path)
+    contents = pp.out.getvalue()
+
+    # Load into an OrderedDict to ensure order is preserved. Note: Python 3.7
+    # also preserves ordering for normal dictionaries.
+    # Code based on https://stackoverflow.com/a/21912744.
+    class OrderedLoader(yaml.Loader):
+        pass
+
+    def construct_mapping(loader, node):
+        loader.flatten_mapping(node)
+        return OrderedDict(loader.construct_pairs(node))
+
+    tag = yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG
+    OrderedLoader.add_constructor(tag, construct_mapping)
+    return yaml.load(contents, OrderedLoader)
+
+
+def generate_header(c_out, includeguard, contents):
+    c_out.write(
+        HEADER_TEMPLATE
+        % {
+            "includeguard": includeguard,
+            "contents": contents,
+        }
+    )
+
+
+operand_types = {
+    "WordSized": "LAllocation",
+    "BoxedValue": "LBoxAllocation",
+    "Int64": "LInt64Allocation",
+}
+
+
+result_types = {
+    "WordSized": "1",
+    "BoxedValue": "BOX_PIECES",
+    "Int64": "INT64_PIECES",
+}
+
+
+def gen_helper_template_value(num_regular_allocs, num_value_allocs, num_int64_allocs):
+    template_str = ""
+    if num_value_allocs:
+        template_str += str(num_value_allocs) + " * BOX_PIECES + "
+    if num_int64_allocs:
+        template_str += str(num_int64_allocs) + " * INT64_PIECES + "
+    template_str += str(num_regular_allocs)
+    return template_str
+
+
+def build_index_def(num_specials_operands, index_value, num_reg_operands, piece):
+    if num_specials_operands:
+        return "  static const size_t {} = {} + {} * {};\\\n".format(
+            index_value, num_reg_operands, piece, num_specials_operands
+        )
+    else:
+        return "  static const size_t {} = {};\\\n".format(
+            index_value, num_reg_operands
+        )
+
+
+def gen_lir_class(
+    name, result_type, operands, arguments, num_temps, call_instruction, mir_op
+):
+    """Generates class definition for a single LIR opcode."""
+    class_name = "L" + name
+
+    getters = []
+    setters = []
+    # Operand index definitions.
+    oper_indices = []
+    # Parameters for the class constructor.
+    constructor_params = []
+
+    num_reg_operands = 0
+    num_value_operands = 0
+    num_int64_operands = 0
+    if operands:
+        # Get number of LAllocations to use for defining indices.
+        for operand in operands:
+            if operands[operand] == "WordSized":
+                num_reg_operands += 1
+
+        current_reg_oper = 0
+        for operand in operands:
+            op_type = operands[operand]
+            op_alloc_type = operand_types[op_type]
+            constructor_params.append("const " + op_alloc_type + "& " + operand)
+            if op_type == "WordSized":
+                index_value = str(current_reg_oper)
+                current_reg_oper += 1
+                getters.append(
+                    "  const "
+                    + op_alloc_type
+                    + "* "
+                    + operand
+                    + "() { return getOperand("
+                    + index_value
+                    + "); }"
+                )
+                setters.append("    setOperand(" + index_value + ", " + operand + ");")
+            elif op_type == "BoxedValue":
+                index_value = operand[0].upper() + operand[1:] + "Index"
+                oper_indices.append(
+                    build_index_def(
+                        num_value_operands, index_value, num_reg_operands, "BOX_PIECES"
+                    )
+                )
+                num_value_operands += 1
+                # No getters generated for BoxedValue operands.
+                setters.append(
+                    "    setBoxOperand(" + index_value + ", " + operand + ");"
+                )
+            elif op_type == "Int64":
+                index_value = operand[0].upper() + operand[1:] + "Index"
+                oper_indices.append(
+                    build_index_def(
+                        num_int64_operands,
+                        index_value,
+                        num_reg_operands,
+                        "INT64_PIECES",
+                    )
+                )
+                num_int64_operands += 1
+                getters.append(
+                    "  const "
+                    + op_alloc_type
+                    + " "
+                    + operand
+                    + "() { return getInt64Operand("
+                    + index_value
+                    + "); }"
+                )
+                setters.append(
+                    "    setInt64Operand(" + index_value + ", " + operand + ");"
+                )
+            else:
+                raise Exception("Invalid operand type: " + op_type)
+    if num_temps:
+        for temp in range(num_temps):
+            constructor_params.append("const LDefinition& temp" + str(temp))
+            setters.append("    setTemp(" + str(temp) + ", temp" + str(temp) + ");")
+            getters.append(
+                "  const LDefinition* temp"
+                + str(temp)
+                + "() { return getTemp("
+                + str(temp)
+                + "); }"
+            )
+    code = "class {} : public LInstructionHelper<".format(class_name)
+    if result_type:
+        code += result_types[result_type] + ", "
+    else:
+        code += "0, "
+    code += gen_helper_template_value(
+        num_reg_operands, num_value_operands, num_int64_operands
+    )
+    code += ", {}> {{\\\n".format(num_temps)
+    if arguments:
+        for arg_name in arguments:
+            arg_type_sig = arguments[arg_name]
+            constructor_params.append(arg_type_sig + " " + arg_name)
+            code += "  " + arg_type_sig + " " + arg_name + "_;\\\n"
+    code += " public:\\\n  LIR_HEADER({})\\\n".format(name)
+    code += "  explicit {}(".format(class_name)
+    code += ", ".join(constructor_params)
+    code += ") : LInstructionHelper(classOpcode)"
+    if arguments:
+        for arg_name in arguments:
+            code += ", " + arg_name + "_(" + arg_name + ")"
+    code += " {"
+    if call_instruction:
+        code += "\\\n    this->setIsCall();"
+    code += "\\\n"
+    code += "\\\n".join(setters)
+    code += "\\\n  }\\\n"
+    code += "\\\n".join(getters)
+    if arguments:
+        for arg_name in arguments:
+            code += "  " + arguments[arg_name] + " " + arg_name + "() const { "
+            code += "return " + arg_name + "_; }\\\n"
+    code += "\\\n"
+    if operands:
+        code += "\\\n".join(oper_indices)
+    if mir_op:
+        if mir_op is True:
+            code += "  M{}* mir() const {{ return mir_->to{}(); }};\\\n".format(
+                name, name
+            )
+        else:
+            code += "  M{}* mir() const {{ return mir_->to{}(); }};\\\n".format(
+                mir_op, mir_op
+            )
+    code += "};\\\n"
+    return code
+
+
+def generate_lir_header(c_out, yaml_path):
+    data = load_yaml(yaml_path)
+
+    # LIR_OPCODE_LIST opcode.
+    ops = []
+
+    # Generated LIR op class definitions.
+    lir_op_classes = []
+
+    for op in data:
+        name = op["name"]
+
+        gen_boilerplate = op.get("gen_boilerplate", True)
+        assert isinstance(gen_boilerplate, bool)
+
+        if gen_boilerplate:
+            result_type = op.get("result_type", None)
+            assert result_type is None or str
+            if result_type:
+                assert result_types[result_type]
+
+            operands = op.get("operands", None)
+            assert operands is None or OrderedDict
+
+            arguments = op.get("arguments", None)
+            assert arguments is None or isinstance(arguments, OrderedDict)
+
+            num_temps = op.get("num_temps", 0)
+            assert num_temps is None or int
+
+            gen_boilerplate = op.get("gen_boilerplate", True)
+            assert isinstance(gen_boilerplate, bool)
+
+            call_instruction = op.get("call_instruction", None)
+            assert call_instruction is None or True
+
+            mir_op = op.get("mir_op", None)
+            assert mir_op is None or True or str
+
+            lir_op_classes.append(
+                gen_lir_class(
+                    name,
+                    result_type,
+                    operands,
+                    arguments,
+                    num_temps,
+                    call_instruction,
+                    mir_op,
+                )
+            )
+
+        ops.append("_({})".format(name))
+
+    contents = "#define LIR_OPCODE_LIST(_)\\\n"
+    contents += "\\\n".join(ops)
+    contents += "\n\n"
+
+    contents += "#define LIR_OPCODE_CLASS_GENERATED \\\n"
+    contents += "\\\n".join(lir_op_classes)
+    contents += "\n\n"
+
+    generate_header(c_out, "jit_LIROpsGenerated_h", contents)