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Allow dot syntax notation for enumerated immediate operands.

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The meta language patterns sometimes need to refer to specific values of
enumerated immediate operands. The dot syntax provides a namespaced,
typed way of doing that: icmp(intcc.ult, a, x).

Add an ast.Enumerator class for representing this kind of AST leaf node.

Add value definitions for the intcc and floatcc immediate operand kinds.
This commit is contained in:
Jakob Stoklund Olesen
2017-03-30 11:33:28 -07:00
parent cb33f93fcd
commit aa06e40456
4 changed files with 102 additions and 8 deletions
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32
lib/cretonne/meta/base/immediates.py
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@@ -34,7 +34,19 @@ ieee64 = ImmediateKind('ieee64', 'A 64-bit immediate floating point number.')
intcc = ImmediateKind(
'intcc',
'An integer comparison condition code.',
default_member='cond', rust_type='IntCC')
default_member='cond', rust_type='IntCC',
values={
'eq': 'Equal',
'ne': 'NotEqual',
'sge': 'SignedGreaterThanOrEqual',
'sgt': 'SignedGreaterThan',
'sle': 'SignedLessThanOrEqual',
'slt': 'SignedLessThan',
'uge': 'UnsignedGreaterThanOrEqual',
'ugt': 'UnsignedGreaterThan',
'ule': 'UnsignedLessThanOrEqual',
'ult': 'UnsignedLessThan',
})
#: A condition code for comparing floating point values.
#:
@@ -43,4 +55,20 @@ intcc = ImmediateKind(
floatcc = ImmediateKind(
'floatcc',
'A floating point comparison condition code.',
default_member='cond', rust_type='FloatCC')
default_member='cond', rust_type='FloatCC',
values={
'ord': 'Ordered',
'uno': 'Unordered',
'eq': 'Equal',
'ne': 'NotEqual',
'one': 'OrderedNotEqual',
'ueq': 'UnorderedOrEqual',
'lt': 'LessThan',
'le': 'LessThanOrEqual',
'gt': 'GreaterThan',
'ge': 'GreaterThanOrEqual',
'ult': 'UnorderedOrLessThan',
'ule': 'UnorderedOrLessThanOrEqual',
'ugt': 'UnorderedOrGreaterThan',
'uge': 'UnorderedOrGreaterThanOrEqual',
})