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ir_operation.py
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ir_operation.py
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# RUN: %PYTHON %s | FileCheck %s
import gc
import io
import itertools
from mlir.ir import *
def run(f):
print("\nTEST:", f.__name__)
f()
gc.collect()
assert Context._get_live_count() == 0
# Verify iterator based traversal of the op/region/block hierarchy.
# CHECK-LABEL: TEST: testTraverseOpRegionBlockIterators
def testTraverseOpRegionBlockIterators():
ctx = Context()
ctx.allow_unregistered_dialects = True
module = Module.parse(r"""
func @f1(%arg0: i32) -> i32 {
%1 = "custom.addi"(%arg0, %arg0) : (i32, i32) -> i32
return %1 : i32
}
""", ctx)
op = module.operation
assert op.context is ctx
# Get the block using iterators off of the named collections.
regions = list(op.regions)
blocks = list(regions[0].blocks)
# CHECK: MODULE REGIONS=1 BLOCKS=1
print(f"MODULE REGIONS={len(regions)} BLOCKS={len(blocks)}")
# Get the regions and blocks from the default collections.
default_regions = list(op)
default_blocks = list(default_regions[0])
# They should compare equal regardless of how obtained.
assert default_regions == regions
assert default_blocks == blocks
# Should be able to get the operations from either the named collection
# or the block.
operations = list(blocks[0].operations)
default_operations = list(blocks[0])
assert default_operations == operations
def walk_operations(indent, op):
for i, region in enumerate(op):
print(f"{indent}REGION {i}:")
for j, block in enumerate(region):
print(f"{indent} BLOCK {j}:")
for k, child_op in enumerate(block):
print(f"{indent} OP {k}: {child_op}")
walk_operations(indent + " ", child_op)
# CHECK: REGION 0:
# CHECK: BLOCK 0:
# CHECK: OP 0: func
# CHECK: REGION 0:
# CHECK: BLOCK 0:
# CHECK: OP 0: %0 = "custom.addi"
# CHECK: OP 1: return
# CHECK: OP 1: module_terminator
walk_operations("", op)
run(testTraverseOpRegionBlockIterators)
# Verify index based traversal of the op/region/block hierarchy.
# CHECK-LABEL: TEST: testTraverseOpRegionBlockIndices
def testTraverseOpRegionBlockIndices():
ctx = Context()
ctx.allow_unregistered_dialects = True
module = Module.parse(r"""
func @f1(%arg0: i32) -> i32 {
%1 = "custom.addi"(%arg0, %arg0) : (i32, i32) -> i32
return %1 : i32
}
""", ctx)
def walk_operations(indent, op):
for i in range(len(op.regions)):
region = op.regions[i]
print(f"{indent}REGION {i}:")
for j in range(len(region.blocks)):
block = region.blocks[j]
print(f"{indent} BLOCK {j}:")
for k in range(len(block.operations)):
child_op = block.operations[k]
print(f"{indent} OP {k}: {child_op}")
walk_operations(indent + " ", child_op)
# CHECK: REGION 0:
# CHECK: BLOCK 0:
# CHECK: OP 0: func
# CHECK: REGION 0:
# CHECK: BLOCK 0:
# CHECK: OP 0: %0 = "custom.addi"
# CHECK: OP 1: return
# CHECK: OP 1: module_terminator
walk_operations("", module.operation)
run(testTraverseOpRegionBlockIndices)
# CHECK-LABEL: TEST: testBlockArgumentList
def testBlockArgumentList():
with Context() as ctx:
module = Module.parse(r"""
func @f1(%arg0: i32, %arg1: f64, %arg2: index) {
return
}
""", ctx)
func = module.body.operations[0]
entry_block = func.regions[0].blocks[0]
assert len(entry_block.arguments) == 3
# CHECK: Argument 0, type i32
# CHECK: Argument 1, type f64
# CHECK: Argument 2, type index
for arg in entry_block.arguments:
print(f"Argument {arg.arg_number}, type {arg.type}")
new_type = IntegerType.get_signless(8 * (arg.arg_number + 1))
arg.set_type(new_type)
# CHECK: Argument 0, type i8
# CHECK: Argument 1, type i16
# CHECK: Argument 2, type i24
for arg in entry_block.arguments:
print(f"Argument {arg.arg_number}, type {arg.type}")
run(testBlockArgumentList)
# CHECK-LABEL: TEST: testOperationOperands
def testOperationOperands():
with Context() as ctx:
ctx.allow_unregistered_dialects = True
module = Module.parse(r"""
func @f1(%arg0: i32) {
%0 = "test.producer"() : () -> i64
"test.consumer"(%arg0, %0) : (i32, i64) -> ()
return
}""")
func = module.body.operations[0]
entry_block = func.regions[0].blocks[0]
consumer = entry_block.operations[1]
assert len(consumer.operands) == 2
# CHECK: Operand 0, type i32
# CHECK: Operand 1, type i64
for i, operand in enumerate(consumer.operands):
print(f"Operand {i}, type {operand.type}")
run(testOperationOperands)
# CHECK-LABEL: TEST: testOperationOperandsSlice
def testOperationOperandsSlice():
with Context() as ctx:
ctx.allow_unregistered_dialects = True
module = Module.parse(r"""
func @f1() {
%0 = "test.producer0"() : () -> i64
%1 = "test.producer1"() : () -> i64
%2 = "test.producer2"() : () -> i64
%3 = "test.producer3"() : () -> i64
%4 = "test.producer4"() : () -> i64
"test.consumer"(%0, %1, %2, %3, %4) : (i64, i64, i64, i64, i64) -> ()
return
}""")
func = module.body.operations[0]
entry_block = func.regions[0].blocks[0]
consumer = entry_block.operations[5]
assert len(consumer.operands) == 5
for left, right in zip(consumer.operands, consumer.operands[::-1][::-1]):
assert left == right
# CHECK: test.producer0
# CHECK: test.producer1
# CHECK: test.producer2
# CHECK: test.producer3
# CHECK: test.producer4
full_slice = consumer.operands[:]
for operand in full_slice:
print(operand)
# CHECK: test.producer0
# CHECK: test.producer1
first_two = consumer.operands[0:2]
for operand in first_two:
print(operand)
# CHECK: test.producer3
# CHECK: test.producer4
last_two = consumer.operands[3:]
for operand in last_two:
print(operand)
# CHECK: test.producer0
# CHECK: test.producer2
# CHECK: test.producer4
even = consumer.operands[::2]
for operand in even:
print(operand)
# CHECK: test.producer2
fourth = consumer.operands[::2][1::2]
for operand in fourth:
print(operand)
run(testOperationOperandsSlice)
# CHECK-LABEL: TEST: testDetachedOperation
def testDetachedOperation():
ctx = Context()
ctx.allow_unregistered_dialects = True
with Location.unknown(ctx):
i32 = IntegerType.get_signed(32)
op1 = Operation.create(
"custom.op1", results=[i32, i32], regions=1, attributes={
"foo": StringAttr.get("foo_value"),
"bar": StringAttr.get("bar_value"),
})
# CHECK: %0:2 = "custom.op1"() ( {
# CHECK: }) {bar = "bar_value", foo = "foo_value"} : () -> (si32, si32)
print(op1)
# TODO: Check successors once enough infra exists to do it properly.
run(testDetachedOperation)
# CHECK-LABEL: TEST: testOperationInsertionPoint
def testOperationInsertionPoint():
ctx = Context()
ctx.allow_unregistered_dialects = True
module = Module.parse(r"""
func @f1(%arg0: i32) -> i32 {
%1 = "custom.addi"(%arg0, %arg0) : (i32, i32) -> i32
return %1 : i32
}
""", ctx)
# Create test op.
with Location.unknown(ctx):
op1 = Operation.create("custom.op1")
op2 = Operation.create("custom.op2")
func = module.body.operations[0]
entry_block = func.regions[0].blocks[0]
ip = InsertionPoint.at_block_begin(entry_block)
ip.insert(op1)
ip.insert(op2)
# CHECK: func @f1
# CHECK: "custom.op1"()
# CHECK: "custom.op2"()
# CHECK: %0 = "custom.addi"
print(module)
# Trying to add a previously added op should raise.
try:
ip.insert(op1)
except ValueError:
pass
else:
assert False, "expected insert of attached op to raise"
run(testOperationInsertionPoint)
# CHECK-LABEL: TEST: testOperationWithRegion
def testOperationWithRegion():
ctx = Context()
ctx.allow_unregistered_dialects = True
with Location.unknown(ctx):
i32 = IntegerType.get_signed(32)
op1 = Operation.create("custom.op1", regions=1)
block = op1.regions[0].blocks.append(i32, i32)
# CHECK: "custom.op1"() ( {
# CHECK: ^bb0(%arg0: si32, %arg1: si32): // no predecessors
# CHECK: "custom.terminator"() : () -> ()
# CHECK: }) : () -> ()
terminator = Operation.create("custom.terminator")
ip = InsertionPoint(block)
ip.insert(terminator)
print(op1)
# Now add the whole operation to another op.
# TODO: Verify lifetime hazard by nulling out the new owning module and
# accessing op1.
# TODO: Also verify accessing the terminator once both parents are nulled
# out.
module = Module.parse(r"""
func @f1(%arg0: i32) -> i32 {
%1 = "custom.addi"(%arg0, %arg0) : (i32, i32) -> i32
return %1 : i32
}
""")
func = module.body.operations[0]
entry_block = func.regions[0].blocks[0]
ip = InsertionPoint.at_block_begin(entry_block)
ip.insert(op1)
# CHECK: func @f1
# CHECK: "custom.op1"()
# CHECK: "custom.terminator"
# CHECK: %0 = "custom.addi"
print(module)
run(testOperationWithRegion)
# CHECK-LABEL: TEST: testOperationResultList
def testOperationResultList():
ctx = Context()
module = Module.parse(r"""
func @f1() {
%0:3 = call @f2() : () -> (i32, f64, index)
return
}
func private @f2() -> (i32, f64, index)
""", ctx)
caller = module.body.operations[0]
call = caller.regions[0].blocks[0].operations[0]
assert len(call.results) == 3
# CHECK: Result 0, type i32
# CHECK: Result 1, type f64
# CHECK: Result 2, type index
for res in call.results:
print(f"Result {res.result_number}, type {res.type}")
run(testOperationResultList)
# CHECK-LABEL: TEST: testOperationResultListSlice
def testOperationResultListSlice():
with Context() as ctx:
ctx.allow_unregistered_dialects = True
module = Module.parse(r"""
func @f1() {
"some.op"() : () -> (i1, i2, i3, i4, i5)
return
}
""")
func = module.body.operations[0]
entry_block = func.regions[0].blocks[0]
producer = entry_block.operations[0]
assert len(producer.results) == 5
for left, right in zip(producer.results, producer.results[::-1][::-1]):
assert left == right
assert left.result_number == right.result_number
# CHECK: Result 0, type i1
# CHECK: Result 1, type i2
# CHECK: Result 2, type i3
# CHECK: Result 3, type i4
# CHECK: Result 4, type i5
full_slice = producer.results[:]
for res in full_slice:
print(f"Result {res.result_number}, type {res.type}")
# CHECK: Result 1, type i2
# CHECK: Result 2, type i3
# CHECK: Result 3, type i4
middle = producer.results[1:4]
for res in middle:
print(f"Result {res.result_number}, type {res.type}")
# CHECK: Result 1, type i2
# CHECK: Result 3, type i4
odd = producer.results[1::2]
for res in odd:
print(f"Result {res.result_number}, type {res.type}")
# CHECK: Result 3, type i4
# CHECK: Result 1, type i2
inverted_middle = producer.results[-2:0:-2]
for res in inverted_middle:
print(f"Result {res.result_number}, type {res.type}")
run(testOperationResultListSlice)
# CHECK-LABEL: TEST: testOperationAttributes
def testOperationAttributes():
ctx = Context()
ctx.allow_unregistered_dialects = True
module = Module.parse(r"""
"some.op"() { some.attribute = 1 : i8,
other.attribute = 3.0,
dependent = "text" } : () -> ()
""", ctx)
op = module.body.operations[0]
assert len(op.attributes) == 3
iattr = IntegerAttr(op.attributes["some.attribute"])
fattr = FloatAttr(op.attributes["other.attribute"])
sattr = StringAttr(op.attributes["dependent"])
# CHECK: Attribute type i8, value 1
print(f"Attribute type {iattr.type}, value {iattr.value}")
# CHECK: Attribute type f64, value 3.0
print(f"Attribute type {fattr.type}, value {fattr.value}")
# CHECK: Attribute value text
print(f"Attribute value {sattr.value}")
# We don't know in which order the attributes are stored.
# CHECK-DAG: NamedAttribute(dependent="text")
# CHECK-DAG: NamedAttribute(other.attribute=3.000000e+00 : f64)
# CHECK-DAG: NamedAttribute(some.attribute=1 : i8)
for attr in op.attributes:
print(str(attr))
# Check that exceptions are raised as expected.
try:
op.attributes["does_not_exist"]
except KeyError:
pass
else:
assert False, "expected KeyError on accessing a non-existent attribute"
try:
op.attributes[42]
except IndexError:
pass
else:
assert False, "expected IndexError on accessing an out-of-bounds attribute"
run(testOperationAttributes)
# CHECK-LABEL: TEST: testOperationPrint
def testOperationPrint():
ctx = Context()
module = Module.parse(r"""
func @f1(%arg0: i32) -> i32 {
%0 = constant dense<[1, 2, 3, 4]> : tensor<4xi32>
return %arg0 : i32
}
""", ctx)
# Test print to stdout.
# CHECK: return %arg0 : i32
module.operation.print()
# Test print to text file.
f = io.StringIO()
# CHECK: <class 'str'>
# CHECK: return %arg0 : i32
module.operation.print(file=f)
str_value = f.getvalue()
print(str_value.__class__)
print(f.getvalue())
# Test print to binary file.
f = io.BytesIO()
# CHECK: <class 'bytes'>
# CHECK: return %arg0 : i32
module.operation.print(file=f, binary=True)
bytes_value = f.getvalue()
print(bytes_value.__class__)
print(bytes_value)
# Test get_asm with options.
# CHECK: value = opaque<"", "0xDEADBEEF"> : tensor<4xi32>
# CHECK: "std.return"(%arg0) : (i32) -> () -:4:7
module.operation.print(large_elements_limit=2, enable_debug_info=True,
pretty_debug_info=True, print_generic_op_form=True, use_local_scope=True)
run(testOperationPrint)
def testKnownOpView():
with Context(), Location.unknown():
Context.current.allow_unregistered_dialects = True
module = Module.parse(r"""
%1 = "custom.f32"() : () -> f32
%2 = "custom.f32"() : () -> f32
%3 = addf %1, %2 : f32
""")
print(module)
# addf should map to a known OpView class in the std dialect.
# We know the OpView for it defines an 'lhs' attribute.
addf = module.body.operations[2]
# CHECK: <mlir.dialects.std._AddFOp object
print(repr(addf))
# CHECK: "custom.f32"()
print(addf.lhs)
# One of the custom ops should resolve to the default OpView.
custom = module.body.operations[0]
# CHECK: <_mlir.ir.OpView object
print(repr(custom))
# Check again to make sure negative caching works.
custom = module.body.operations[0]
# CHECK: <_mlir.ir.OpView object
print(repr(custom))
run(testKnownOpView)