a6c2cc71df
Add a new kind of instruction format that keeps all of its value arguments in a value list. These value lists are all allocated out of the dfg.value_lists memory pool. Instruction formats with the value_list property set store *all* of their value arguments in a single value list. There is no distinction between fixed arguments and variable arguments. Change the Call instruction format to use the value list representation for its arguments. This change is only the beginning. The intent is to eliminate the boxed_storage instruction formats completely. Value lists use less memory, and when the transition is complete, InstructionData will have a trivial Drop implementation.
59 lines
2.3 KiB
Python
59 lines
2.3 KiB
Python
"""
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The cretonne.formats defines all instruction formats.
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Every instruction format has a corresponding `InstructionData` variant in the
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Rust representation of cretonne IL, so all instruction formats must be defined
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in this module.
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"""
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from __future__ import absolute_import
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from cdsl.formats import InstructionFormat
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from cdsl.operands import VALUE, VARIABLE_ARGS
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from .immediates import imm64, uimm8, ieee32, ieee64, immvector, intcc, floatcc
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from .entities import ebb, sig_ref, func_ref, jump_table
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Nullary = InstructionFormat()
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Unary = InstructionFormat(VALUE)
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UnaryImm = InstructionFormat(imm64)
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UnaryIeee32 = InstructionFormat(ieee32)
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UnaryIeee64 = InstructionFormat(ieee64)
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UnaryImmVector = InstructionFormat(immvector, boxed_storage=True)
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UnarySplit = InstructionFormat(VALUE, multiple_results=True)
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Binary = InstructionFormat(VALUE, VALUE)
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BinaryImm = InstructionFormat(VALUE, imm64)
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BinaryImmRev = InstructionFormat(imm64, VALUE)
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# Generate result + overflow flag.
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BinaryOverflow = InstructionFormat(VALUE, VALUE, multiple_results=True)
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# The select instructions are controlled by the second VALUE operand.
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# The first VALUE operand is the controlling flag which has a derived type.
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# The fma instruction has the same constraint on all inputs.
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Ternary = InstructionFormat(VALUE, VALUE, VALUE, typevar_operand=1)
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# Carry in *and* carry out for `iadd_carry` and friends.
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TernaryOverflow = InstructionFormat(
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VALUE, VALUE, VALUE, multiple_results=True, boxed_storage=True)
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InsertLane = InstructionFormat(VALUE, ('lane', uimm8), VALUE)
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ExtractLane = InstructionFormat(VALUE, ('lane', uimm8))
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IntCompare = InstructionFormat(intcc, VALUE, VALUE)
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FloatCompare = InstructionFormat(floatcc, VALUE, VALUE)
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Jump = InstructionFormat(ebb, VARIABLE_ARGS, boxed_storage=True)
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Branch = InstructionFormat(VALUE, ebb, VARIABLE_ARGS, boxed_storage=True)
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BranchTable = InstructionFormat(VALUE, jump_table)
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Call = InstructionFormat(
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func_ref, VARIABLE_ARGS, multiple_results=True, value_list=True)
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IndirectCall = InstructionFormat(
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sig_ref, VALUE, VARIABLE_ARGS,
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multiple_results=True, boxed_storage=True)
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Return = InstructionFormat(VARIABLE_ARGS, boxed_storage=True)
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ReturnReg = InstructionFormat(VALUE, VARIABLE_ARGS, boxed_storage=True)
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# Finally extract the names of global variables in this module.
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InstructionFormat.extract_names(globals())
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