Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 66 insertions, 0 deletions

diff --git a/js/src/jit/GenerateOpcodeFiles.py b/js/src/jit/GenerateOpcodeFiles.py
new file mode 100644
index 0000000000..be41361d78
--- /dev/null
+++ b/js/src/jit/GenerateOpcodeFiles.py
@@ -0,0 +1,66 @@
+# 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/LOpcodesGenerated.h (list of LIR instructions) and
+# jit/MOpcodesGenerated.h (list of MIR instructions) from MIR.h and LIR files.
+
+import re
+
+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/GenerateOpcodeFiles.py. Do not edit! */
+
+#define %(listname)s(_) \\
+%(ops)s
+
+#endif // %(includeguard)s
+"""
+
+
+def get_opcodes(inputs, pat):
+    # Preserve the original order. Use a set to detect duplicates.
+    ops = []
+    ops_set = set()
+    for inputfile in inputs:
+        for line in open(inputfile):
+            match = pat.match(line)
+            if match:
+                op = match.group("name")
+                if op in ops_set:
+                    raise Exception("Duplicate opcode {} in {}".format(op, inputfile))
+                ops.append(op)
+                ops_set.add(op)
+    assert len(ops) == len(ops_set)
+    return ops
+
+
+def generate_header(c_out, inputs, pat, includeguard, listname):
+    ops = get_opcodes(inputs, pat)
+    ops_string = "\\\n".join(["_(" + op + ")" for op in ops])
+    c_out.write(
+        HEADER_TEMPLATE
+        % {
+            "ops": ops_string,
+            "includeguard": includeguard,
+            "listname": listname,
+        }
+    )
+
+
+def generate_mir_header(c_out, *inputs):
+    pat = re.compile(
+        r"^\s*INSTRUCTION_HEADER(_WITHOUT_TYPEPOLICY)?\((?P<name>\w+)\);?$"
+    )
+    generate_header(c_out, inputs, pat, "jit_MOpcodesGenerated_h", "MIR_OPCODE_LIST")
+
+
+def generate_lir_header(c_out, *inputs):
+    pat = re.compile(r"^\s*LIR_HEADER\((?P<name>\w+)\);?$")
+    generate_header(c_out, inputs, pat, "jit_LOpcodesGenerated_h", "LIR_OPCODE_LIST")