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# RUN: %PYTHON %s | FileCheck %s
import gc
import io
import itertools
from mlir.ir import *
from mlir.dialects import builtin
# Note: std dialect needed for terminators.
from mlir.dialects import std
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, %[[ARG1:.*]]: i16)
# CHECK: br ^bb1(%[[ARG1]] : i16)
# CHECK: ^bb1(%[[PHI0:.*]]: i16):
# CHECK: br ^bb2(%[[ARG0]] : i32)
# CHECK: ^bb2(%[[PHI1:.*]]: i32):
# CHECK: return
@run
def testBlockCreation():
with Context() as ctx, Location.unknown():
module = Module.create()
with InsertionPoint(module.body):
f_type = FunctionType.get(
[IntegerType.get_signless(32),
IntegerType.get_signless(16)], [])
f_op = builtin.FuncOp("test", f_type)
entry_block = f_op.add_entry_block()
i32_arg, i16_arg = entry_block.arguments
successor_block = entry_block.create_after(i32_arg.type)
with InsertionPoint(successor_block) as successor_ip:
assert successor_ip.block == successor_block
std.ReturnOp([])
middle_block = successor_block.create_before(i16_arg.type)
with InsertionPoint(entry_block) as entry_ip:
assert entry_ip.block == entry_block
std.BranchOp([i16_arg], dest=middle_block)
with InsertionPoint(middle_block) as middle_ip:
assert middle_ip.block == middle_block
std.BranchOp([i32_arg], dest=successor_block)
print(module.operation)
# Ensure region back references are coherent.
assert entry_block.region == middle_block.region == successor_block.region
# CHECK-LABEL: TEST: testFirstBlockCreation
# CHECK: func @test(%{{.*}}: f32)
# CHECK: return
@run
def testFirstBlockCreation():
with Context() as ctx, Location.unknown():
module = Module.create()
f32 = F32Type.get()
with InsertionPoint(module.body):
func = builtin.FuncOp("test", ([f32], []))
entry_block = Block.create_at_start(func.operation.regions[0], [f32])
with InsertionPoint(entry_block):
std.ReturnOp([])
print(module)
assert module.operation.verify()
assert func.body.blocks[0] == entry_block
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