8e6c55c92c
* It is pretty clear that no one has tried this yet since it was both incomplete and broken. * Fixes a symbol hiding issues keeping even the generic builder from constructing an operation with successors. * Adds ODS support for successors. * Adds CAPI `mlirBlockGetParentRegion`, `mlirRegionEqual` + tests (and missing test for `mlirBlockGetParentOperation`). * Adds Python property: `Block.region`. * Adds Python methods: `Block.create_before` and `Block.create_after`. * Adds Python property: `InsertionPoint.block`. * Adds new blocks.py test to verify a plausible CFG construction case. Differential Revision: https://reviews.llvm.org/D108898
54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
# RUN: %PYTHON %s | FileCheck %s
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import gc
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import io
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import itertools
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from mlir.ir import *
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from mlir.dialects import builtin
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# Note: std dialect needed for terminators.
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from mlir.dialects import std
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def run(f):
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print("\nTEST:", f.__name__)
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f()
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gc.collect()
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assert Context._get_live_count() == 0
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return f
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# CHECK-LABEL: TEST: testBlockCreation
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# CHECK: func @test(%[[ARG0:.*]]: i32, %[[ARG1:.*]]: i16)
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# CHECK: br ^bb1(%[[ARG1]] : i16)
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# CHECK: ^bb1(%[[PHI0:.*]]: i16):
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# CHECK: br ^bb2(%[[ARG0]] : i32)
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# CHECK: ^bb2(%[[PHI1:.*]]: i32):
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# CHECK: return
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@run
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def testBlockCreation():
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with Context() as ctx, Location.unknown():
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module = Module.create()
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with InsertionPoint(module.body):
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f_type = FunctionType.get(
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[IntegerType.get_signless(32),
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IntegerType.get_signless(16)], [])
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f_op = builtin.FuncOp("test", f_type)
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entry_block = f_op.add_entry_block()
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i32_arg, i16_arg = entry_block.arguments
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successor_block = entry_block.create_after(i32_arg.type)
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with InsertionPoint(successor_block) as successor_ip:
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assert successor_ip.block == successor_block
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std.ReturnOp([])
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middle_block = successor_block.create_before(i16_arg.type)
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with InsertionPoint(entry_block) as entry_ip:
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assert entry_ip.block == entry_block
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std.BranchOp([i16_arg], dest=middle_block)
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with InsertionPoint(middle_block) as middle_ip:
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assert middle_ip.block == middle_block
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std.BranchOp([i32_arg], dest=successor_block)
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print(module.operation)
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# Ensure region back references are coherent.
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assert entry_block.region == middle_block.region == successor_block.region
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