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Add heaps to the Cretonne IL.

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Add preamble syntax for declaring static and dynamic heaps, and update
the langref section on heaps. Add IR support for heap references.

Remove the heap_load and heap_store as discussed in #144. We will use
heap_addr along with native load and store instructions in their place.

Add the heap_addr instruction and document its bounds checking
semantics.
This commit is contained in:
Jakob Stoklund Olesen
2017-08-18 12:51:54 -07:00
parent a9238eda7a
commit 3b71a27632
17 changed files with 405 additions and 83 deletions
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6
lib/cretonne/meta/base/formats.py
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@@ -8,10 +8,11 @@ in this module.
from __future__ import absolute_import
from cdsl.formats import InstructionFormat
from cdsl.operands import VALUE, VARIABLE_ARGS
from .immediates import imm64, uimm8, ieee32, ieee64, offset32, uoffset32
from .immediates import imm64, uimm8, uimm32, ieee32, ieee64
from .immediates import offset32, uoffset32
from .immediates import boolean, intcc, floatcc, memflags, regunit
from . import entities
from .entities import ebb, sig_ref, func_ref, stack_slot
from .entities import ebb, sig_ref, func_ref, stack_slot, heap
Nullary = InstructionFormat()
@@ -59,6 +60,7 @@ StackStore = InstructionFormat(VALUE, stack_slot, offset32)
# TODO: Add a reference to a `heap` declared in the preamble.
HeapLoad = InstructionFormat(VALUE, uoffset32)
HeapStore = InstructionFormat(VALUE, VALUE, uoffset32)
HeapAddr = InstructionFormat(heap, VALUE, uimm32)
RegMove = InstructionFormat(VALUE, ('src', regunit), ('dst', regunit))