Also make sure we generate type checks for the controlling type variable
in legalization patterns. This is not needed for encodings since the
encoding tables are already keyed on the controlling type variable.
Predicate numbers are available in the maps
isa.settings.predicate_number and isa.instp_number instead.
Like the name field, predicate numbers don't interact well with
unique_pred().
The name of a predicate was only ever used for named settings that are
computed as a boolean expression of other settings.
- Record the names of these settings in named_predicates instead.
- Remove the name field from all predicates.
Named predicates does not interact well with the interning of predicates
through isa.unique_pred().
The encoding tables are keyed by the controlling type variable only. We
need to distinguish different encodings for instructions with multiple
type variables.
Add a TypePredicate instruction predicate which can check the type of an
instruction value operand. Combine type checks into the instruction
predicate for instructions with more than one type variable.
Add Intel encodings for fcvt_from_sint.f32.i64 which can now be
distinguished from fcvt_from_sint.f32.i32.
Compute an instruction predicate from any constant values given as
arguments for the immediate operands in an instruction pattern.
Allows for patterns like icmp.i32(intcc.ugt, x, y) or iadd_imm.i32(x, 1)
Trap these predicates in the legalizer code generator since we can't
actually handle them yet.
Consolidate the imm_members and imm_kinds into this list so the
FormatField is the single definition of these properties.
This makes it easier to access the precomputed FormatFields
parametrically, avoiding going through getattr().
This is better for type checking too.
