Capture the Rust type used to represent an operand kind.

The Rust type is usually the camel-cased name of the operand kind, but
there are variations, so allow an explicit rust_type='IntCC' when
defining operand kinds.

meta/cretonne/__init__.py

@@ -290,13 +290,13 @@ class OperandKind(object):
     instruction.
     """
 
-    def __init__(self, name, doc, default_member=None):
+    def __init__(self, name, doc, default_member=None, rust_type=None):
         self.name = name
         self.__doc__ = doc
         self.default_member = default_member
         # The camel-cased name of an operand kind is also the Rust type used to
         # represent it.
-        self.camel_name = camel_case(name)
+        self.rust_type = rust_type or camel_case(name)
 
     def __str__(self):
         return self.name
@@ -348,8 +348,9 @@ class ImmediateKind(OperandKind):
                            `InstructionData` data structure.
     """
 
-    def __init__(self, name, doc, default_member='imm'):
-        super(ImmediateKind, self).__init__(name, doc, default_member)
+    def __init__(self, name, doc, default_member='imm', rust_type=None):
+        super(ImmediateKind, self).__init__(
+                name, doc, default_member, rust_type)
 
     def __repr__(self):
         return 'ImmediateKind({})'.format(self.name)
@@ -362,8 +363,9 @@ class EntityRefKind(OperandKind):
     The kind of an entity reference instruction operand.
     """
 
-    def __init__(self, name, doc, default_member=None):
-        super(EntityRefKind, self).__init__(name, doc, default_member or name)
+    def __init__(self, name, doc, default_member=None, rust_type=None):
+        super(EntityRefKind, self).__init__(
+                name, doc, default_member or name, rust_type)
 
     def __repr__(self):
         return 'EntityRefKind({})'.format(self.name)

meta/cretonne/immediates.py

@@ -28,7 +28,10 @@ ieee32 = ImmediateKind('ieee32', 'A 32-bit immediate floating point number.')
 ieee64 = ImmediateKind('ieee64', 'A 64-bit immediate floating point number.')
 
 #: A large SIMD vector constant.
-immvector = ImmediateKind('immvector', 'An immediate SIMD vector.')
+immvector = ImmediateKind(
+        'immvector',
+        'An immediate SIMD vector.',
+        rust_type='ImmVector')
 
 #: A condition code for comparing integer values.
 #:
@@ -37,7 +40,7 @@ immvector = ImmediateKind('immvector', 'An immediate SIMD vector.')
 intcc = ImmediateKind(
         'intcc',
         'An integer comparison condition code.',
-        default_member='cond')
+        default_member='cond', rust_type='IntCC')
 
 #: A condition code for comparing floating point values.
 #:
@@ -46,4 +49,4 @@ intcc = ImmediateKind(
 floatcc = ImmediateKind(
         'floatcc',
         'A floating point comparison condition code.',
-        default_member='cond')
+        default_member='cond', rust_type='FloatCC')