The meaning of format.typevar_operand changes recently to be relative to
value operands only instead of all operands. The Sphinx cton domain
wasn't updated.
Read the Docs is now using the latest version of Sphinx, so upgrade our
recommended version too.
As of Sphinx 1.4, index entries are 5-tuples instead of 4-tuples. Update
the Cretonne Sphinx domain to generate the new 5-tuples.
Since we're over this compatibility bump, there's no reason to recommend
a specific Sphinx version, so just go back to 'current'.
We want to separate the Python classes that make up the DSL used to
define the Cretonne language from the concrete definitions.
- cdsl.types defines the ValueType class hierarchy.
- base.types defines the concrete types.
It is possible to return multiple values from a function, so ReturnData contains
a VariableArgs instance.
We don't want return instructions to appear as 'return (v1)', so tweak the
printing of VariableArgs so the parantheses are added externally.
Add a typevar_operand argument to the InstructionFormat constructor which
determines the operand used for inferring the controlling type variable.
Identify polymorphic instructions when they are created, determine if the
controlling type variable can be inferred from the typevar_operand, and verify
the use of type variables in the other operands.
Generate type variable summary in the documentation, including how the
controlling type variable is inferred.
