51 lines
1.4 KiB
Python
51 lines
1.4 KiB
Python
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# RUN: %PYTHON %s | FileCheck %s
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from mlir.ir import *
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from mlir.dialects import cf
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def constructAndPrintInModule(f):
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print("\nTEST:", f.__name__)
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with Context() as ctx, Location.unknown():
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ctx.allow_unregistered_dialects = True
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module = Module.create()
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with InsertionPoint(module.body):
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f()
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return f
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# CHECK-LABEL: TEST: testBranchAndSetSuccessor
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@constructAndPrintInModule
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def testBranchAndSetSuccessor():
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op1 = Operation.create("custom.op1", regions=1)
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block0 = op1.regions[0].blocks.append()
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ip = InsertionPoint(block0)
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Operation.create("custom.terminator", ip=ip)
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block1 = op1.regions[0].blocks.append()
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ip = InsertionPoint(block1)
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br1 = cf.BranchOp([], block1, ip=ip)
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# CHECK: ^bb1: // pred: ^bb1
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# CHECK: cf.br ^bb1
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print(br1.successors[0])
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# CHECK: num_successors 1
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print("num_successors", len(br1.successors))
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block2 = op1.regions[0].blocks.append()
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ip = InsertionPoint(block2)
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br2 = cf.BranchOp([], block1, ip=ip)
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# CHECK: ^bb1: // 2 preds: ^bb1, ^bb2
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# CHECK: cf.br ^bb1
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print(br2.successors[0])
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# CHECK: num_successors 1
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print("num_successors", len(br2.successors))
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br1.successors[0] = block2
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# CHECK: ^bb2: // pred: ^bb1
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# CHECK: cf.br ^bb1
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print(br1.successors[0])
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# CHECK: ^bb1: // pred: ^bb2
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# CHECK: cf.br ^bb2
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print(br2.operation.successors[0])
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