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Give RegClassData a reference to its parent RegInfo.

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This makes it possible to materialize new RegClass references without
requiring a RegInfo reference to be passed around.

- Move the RegInfo::toprc() method to RegClassData.
- Rename RegClassData::intersect() to intersect_index() and provide a
  new intersect() which returns a register class.
- Remove some &RegInfo parameters that are no longer needed.
This commit is contained in:
Jakob Stoklund Olesen
2017-10-04 10:10:07 -07:00
parent 7410ddfe08
commit ce4d723a73
8 changed files with 69 additions and 68 deletions
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8
lib/cretonne/meta/gen_encoding.py
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@@ -790,22 +790,22 @@ def emit_operand_constraints(
fmt.format('kind: ConstraintKind::Tied({}),', tied[n])
else:
fmt.line('kind: ConstraintKind::Reg,')
fmt.format('regclass: {},', cons)
fmt.format('regclass: &{}_DATA,', cons)
elif isinstance(cons, Register):
assert n not in tied, "Can't tie fixed register operand"
fmt.format(
'kind: ConstraintKind::FixedReg({}),', cons.unit)
fmt.format('regclass: {},', cons.regclass)
fmt.format('regclass: &{}_DATA,', cons.regclass)
elif isinstance(cons, int):
# This is a tied output constraint. It should never happen
# for input constraints.
assert cons == tied[n], "Invalid tied constraint"
fmt.format('kind: ConstraintKind::Tied({}),', cons)
fmt.format('regclass: {},', recipe.ins[cons])
fmt.format('regclass: &{}_DATA,', recipe.ins[cons])
elif isinstance(cons, Stack):
assert n not in tied, "Can't tie stack operand"
fmt.line('kind: ConstraintKind::Stack,')
fmt.format('regclass: {},', cons.regclass)
fmt.format('regclass: &{}_DATA,', cons.regclass)
else:
raise AssertionError(
'Unsupported constraint {}'.format(cons))