124 lines
4.1 KiB
Python
124 lines
4.1 KiB
Python
"""
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The `cranelift.immediates` module predefines all the Cranelift immediate
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operand types.
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"""
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from __future__ import absolute_import
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from cdsl.operands import ImmediateKind
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#: A 64-bit immediate integer operand.
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#:
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#: This type of immediate integer can interact with SSA values with any
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#: :py:class:`cranelift.IntType` type.
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imm64 = ImmediateKind('imm64', 'A 64-bit immediate integer.')
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#: An unsigned 8-bit immediate integer operand.
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#:
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#: This small operand is used to indicate lane indexes in SIMD vectors and
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#: immediate bit counts on shift instructions.
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uimm8 = ImmediateKind('uimm8', 'An 8-bit immediate unsigned integer.')
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#: An unsigned 32-bit immediate integer operand.
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uimm32 = ImmediateKind('uimm32', 'A 32-bit immediate unsigned integer.')
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#: A 32-bit immediate signed offset.
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#:
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#: This is used to represent an immediate address offset in load/store
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#: instructions.
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offset32 = ImmediateKind(
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'offset32',
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'A 32-bit immediate signed offset.',
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default_member='offset')
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#: A 32-bit immediate floating point operand.
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#:
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#: IEEE 754-2008 binary32 interchange format.
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ieee32 = ImmediateKind('ieee32', 'A 32-bit immediate floating point number.')
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#: A 64-bit immediate floating point operand.
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#:
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#: IEEE 754-2008 binary64 interchange format.
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ieee64 = ImmediateKind('ieee64', 'A 64-bit immediate floating point number.')
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#: An immediate boolean operand.
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#:
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#: This type of immediate boolean can interact with SSA values with any
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#: :py:class:`cranelift.BoolType` type.
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boolean = ImmediateKind('bool', 'An immediate boolean.',
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rust_type='bool')
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#: A condition code for comparing integer values.
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#:
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#: This enumerated operand kind is used for the :clif:inst:`icmp` instruction
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#: and corresponds to the `condcodes::IntCC` Rust type.
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intcc = ImmediateKind(
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'intcc',
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'An integer comparison condition code.',
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default_member='cond',
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rust_type='ir::condcodes::IntCC',
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values={
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'eq': 'Equal',
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'ne': 'NotEqual',
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'sge': 'SignedGreaterThanOrEqual',
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'sgt': 'SignedGreaterThan',
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'sle': 'SignedLessThanOrEqual',
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'slt': 'SignedLessThan',
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'uge': 'UnsignedGreaterThanOrEqual',
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'ugt': 'UnsignedGreaterThan',
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'ule': 'UnsignedLessThanOrEqual',
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'ult': 'UnsignedLessThan',
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})
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#: A condition code for comparing floating point values.
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#:
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#: This enumerated operand kind is used for the :clif:inst:`fcmp` instruction
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#: and corresponds to the `condcodes::FloatCC` Rust type.
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floatcc = ImmediateKind(
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'floatcc',
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'A floating point comparison condition code.',
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default_member='cond',
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rust_type='ir::condcodes::FloatCC',
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values={
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'ord': 'Ordered',
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'uno': 'Unordered',
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'eq': 'Equal',
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'ne': 'NotEqual',
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'one': 'OrderedNotEqual',
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'ueq': 'UnorderedOrEqual',
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'lt': 'LessThan',
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'le': 'LessThanOrEqual',
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'gt': 'GreaterThan',
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'ge': 'GreaterThanOrEqual',
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'ult': 'UnorderedOrLessThan',
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'ule': 'UnorderedOrLessThanOrEqual',
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'ugt': 'UnorderedOrGreaterThan',
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'uge': 'UnorderedOrGreaterThanOrEqual',
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})
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#: Flags for memory operations like :clif:inst:`load` and :clif:inst:`store`.
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memflags = ImmediateKind(
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'memflags',
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'Memory operation flags',
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default_member='flags', rust_type='ir::MemFlags')
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#: A register unit in the current target ISA.
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regunit = ImmediateKind(
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'regunit',
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'A register unit in the target ISA',
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rust_type='isa::RegUnit')
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#: A trap code indicating the reason for trapping.
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#:
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#: The Rust enum type also has a `User(u16)` variant for user-provided trap
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#: codes.
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trapcode = ImmediateKind(
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'trapcode',
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'A trap reason code.',
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default_member='code',
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rust_type='ir::TrapCode',
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values={
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"stk_ovf": 'StackOverflow',
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"heap_oob": 'HeapOutOfBounds',
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"int_ovf": 'IntegerOverflow',
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"int_divz": 'IntegerDivisionByZero',
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})
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