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Generate value type constraints.

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Add an Opcode::constraints() method which returns an OpcodeConstraints object.
This object provides information on instruction polymorphism and how many
results is produced.

Generate a list of TypeSet objects for checking free type variables. The type
sets are parametrized rather than being represented as fully general sets.

Add UniqueTable and UniqueSeqTable classes to the meta code generator. Use for
compressing tabular data by removing duplicates.
This commit is contained in:
Jakob Stoklund Olesen
2016-05-20 10:45:02 -07:00
parent 1e631fdbd6
commit 692a85d720
6 changed files with 413 additions and 10 deletions
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6
meta/cretonne/base.py
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@@ -61,9 +61,9 @@ br_table = Instruction(
'br_table', r"""
Indirect branch via jump table.
Use ``x`` as an unsigned index into the jump table ``JT``. If a jump table
entry is found, branch to the corresponding EBB. If no entry was found fall
through to the next instruction.
Use ``x`` as an unsigned index into the jump table ``JT``. If a jump
table entry is found, branch to the corresponding EBB. If no entry was
found fall through to the next instruction.
Note that this branch instruction can't pass arguments to the targeted
blocks. Split critical edges as needed to work around this.