moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

cranelift/codegen/meta-python/base/entities.py

@@ -0,0 +1,38 @@
+"""
+The `cranelift.entities` module predefines all the Cranelift entity reference
+operand types. There are corresponding definitions in the `cranelift.entities`
+Rust module.
+"""
+from __future__ import absolute_import
+from cdsl.operands import EntityRefKind
+
+
+#: A reference to an extended basic block in the same function.
+#: This is primarliy used in control flow instructions.
+ebb = EntityRefKind(
+        'ebb', 'An extended basic block in the same function.',
+        default_member='destination')
+
+#: A reference to a stack slot declared in the function preamble.
+stack_slot = EntityRefKind('stack_slot', 'A stack slot.')
+
+#: A reference to a global value.
+global_value = EntityRefKind('global_value', 'A global value.')
+
+#: A reference to a function sugnature declared in the function preamble.
+#: This is used to provide the call signature in a call_indirect instruction.
+sig_ref = EntityRefKind('sig_ref', 'A function signature.')
+
+#: A reference to an external function declared in the function preamble.
+#: This is used to provide the callee and signature in a call instruction.
+func_ref = EntityRefKind('func_ref', 'An external function.')
+
+#: A reference to a jump table declared in the function preamble.
+jump_table = EntityRefKind(
+        'jump_table', 'A jump table.', default_member='table')
+
+#: A reference to a heap declared in the function preamble.
+heap = EntityRefKind('heap', 'A heap.')
+
+#: A reference to a table declared in the function preamble.
+table = EntityRefKind('table', 'A table.')