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# RUN: %PYTHON %s | FileCheck %s
import gc
import io
import itertools
from mlir.ir import *
from mlir.dialects import builtin
from mlir.dialects import cf
from mlir.dialects import func
def run(f):
print("\nTEST:", f.__name__)
f()
gc.collect()
assert Context._get_live_count() == 0
return f
# CHECK-LABEL: TEST: testBlockCreation
# CHECK: func @test(%[[ARG0:.*]]: i32 loc("arg0"), %[[ARG1:.*]]: i16 loc("arg1"))
# CHECK: cf.br ^bb1(%[[ARG1]] : i16)
# CHECK: ^bb1(%[[PHI0:.*]]: i16 loc("middle")):
# CHECK: cf.br ^bb2(%[[ARG0]] : i32)
# CHECK: ^bb2(%[[PHI1:.*]]: i32 loc("successor")):
# CHECK: return
@run
def testBlockCreation():
with Context() as ctx, Location.unknown():
module = builtin.ModuleOp()
with InsertionPoint(module.body):
f_type = FunctionType.get(
[IntegerType.get_signless(32), IntegerType.get_signless(16)], []
)
f_op = func.FuncOp("test", f_type)
entry_block = f_op.add_entry_block(
[Location.name("arg0"), Location.name("arg1")]
)
i32_arg, i16_arg = entry_block.arguments
successor_block = entry_block.create_after(
i32_arg.type, arg_locs=[Location.name("successor")]
)
with InsertionPoint(successor_block) as successor_ip:
assert successor_ip.block == successor_block
func.ReturnOp([])
middle_block = successor_block.create_before(
i16_arg.type, arg_locs=[Location.name("middle")]
)
with InsertionPoint(entry_block) as entry_ip:
assert entry_ip.block == entry_block
cf.BranchOp([i16_arg], dest=middle_block)
with InsertionPoint(middle_block) as middle_ip:
assert middle_ip.block == middle_block
cf.BranchOp([i32_arg], dest=successor_block)
module.print(enable_debug_info=True)
# Ensure region back references are coherent.
assert entry_block.region == middle_block.region == successor_block.region
# CHECK-LABEL: TEST: testBlockCreationArgLocs
@run
def testBlockCreationArgLocs():
with Context() as ctx:
ctx.allow_unregistered_dialects = True
f32 = F32Type.get()
op = Operation.create("test", regions=1, loc=Location.unknown())
blocks = op.regions[0].blocks
with Location.name("default_loc"):
blocks.append(f32)
blocks.append()
# CHECK: ^bb0(%{{.+}}: f32 loc("default_loc")):
# CHECK-NEXT: ^bb1:
op.print(enable_debug_info=True)
try:
blocks.append(f32)
except RuntimeError as err:
# CHECK: Missing loc: An MLIR function requires a Location but none was provided
print("Missing loc:", err)
try:
blocks.append(f32, f32, arg_locs=[Location.unknown()])
except ValueError as err:
# CHECK: Wrong loc count: Expected 2 locations, got: 1
print("Wrong loc count:", err)
# CHECK-LABEL: TEST: testFirstBlockCreation
# CHECK: func @test(%{{.*}}: f32 loc("arg_loc"))
# CHECK: return
@run
def testFirstBlockCreation():
with Context() as ctx, Location.unknown():
module = builtin.ModuleOp()
f32 = F32Type.get()
with InsertionPoint(module.body):
f = func.FuncOp("test", ([f32], []))
entry_block = Block.create_at_start(
f.operation.regions[0], [f32], [Location.name("arg_loc")]
)
with InsertionPoint(entry_block):
func.ReturnOp([])
module.print(enable_debug_info=True)
assert module.verify()
assert f.body.blocks[0] == entry_block
# CHECK-LABEL: TEST: testBlockMove
# CHECK: %0 = "realop"() ({
# CHECK: ^bb0([[ARG0:%.+]]: f32):
# CHECK: "ret"([[ARG0]]) : (f32) -> ()
# CHECK: }) : () -> f32
@run
def testBlockMove():
with Context() as ctx, Location.unknown():
ctx.allow_unregistered_dialects = True
module = Module.create()
f32 = F32Type.get()
with InsertionPoint(module.body):
dummy = Operation.create("dummy", regions=1)
block = Block.create_at_start(dummy.operation.regions[0], [f32])
with InsertionPoint(block):
ret_op = Operation.create("ret", operands=[block.arguments[0]])
realop = Operation.create(
"realop", results=[r.type for r in ret_op.operands], regions=1
)
block.append_to(realop.operation.regions[0])
dummy.operation.erase()
print(module)
# CHECK-LABEL: TEST: testBlockHash
@run
def testBlockHash():
with Context() as ctx, Location.unknown():
ctx.allow_unregistered_dialects = True
module = Module.create()
f32 = F32Type.get()
with InsertionPoint(module.body):
dummy = Operation.create("dummy", regions=1)
block1 = Block.create_at_start(dummy.operation.regions[0], [f32])
block2 = Block.create_at_start(dummy.operation.regions[0], [f32])
assert hash(block1) != hash(block2)
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