384 lines
15 KiB
MLIR
384 lines
15 KiB
MLIR
// RUN: mlir-opt -test-ir-visitors -allow-unregistered-dialect -split-input-file %s | FileCheck %s
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// Verify the different configurations of IR visitors.
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// Constant, yield and other terminator ops are not matched for simplicity.
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// Module and function op and their immediately nested blocks are not erased in
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// callbacks with return so that the output includes more cases in pre-order.
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func.func @structured_cfg() {
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%c0 = arith.constant 0 : index
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%c1 = arith.constant 1 : index
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%c10 = arith.constant 10 : index
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scf.for %i = %c1 to %c10 step %c1 {
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%cond = "use0"(%i) : (index) -> (i1)
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scf.if %cond {
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"use1"(%i) : (index) -> ()
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} else {
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"use2"(%i) : (index) -> ()
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}
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"use3"(%i) : (index) -> ()
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} {walk_blocks, walk_regions}
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return
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}
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// CHECK-LABEL: Op pre-order visit
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// CHECK: Visiting op 'builtin.module'
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// CHECK: Visiting op 'func.func'
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// CHECK: Visiting op 'scf.for'
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// CHECK: Visiting op 'use0'
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// CHECK: Visiting op 'scf.if'
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// CHECK: Visiting op 'use1'
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// CHECK: Visiting op 'use2'
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// CHECK: Visiting op 'use3'
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// CHECK: Visiting op 'func.return'
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// CHECK-LABEL: Block pre-order visits
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// CHECK: Visiting block ^bb0 from region 0 from operation 'builtin.module'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'func.func'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'scf.for'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'scf.if'
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// CHECK: Visiting block ^bb0 from region 1 from operation 'scf.if'
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// CHECK-LABEL: Region pre-order visits
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// CHECK: Visiting region 0 from operation 'builtin.module'
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// CHECK: Visiting region 0 from operation 'func.func'
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// CHECK: Visiting region 0 from operation 'scf.for'
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// CHECK: Visiting region 0 from operation 'scf.if'
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// CHECK: Visiting region 1 from operation 'scf.if'
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// CHECK-LABEL: Op post-order visits
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// CHECK: Visiting op 'use0'
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// CHECK: Visiting op 'use1'
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// CHECK: Visiting op 'use2'
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// CHECK: Visiting op 'scf.if'
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// CHECK: Visiting op 'use3'
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// CHECK: Visiting op 'scf.for'
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// CHECK: Visiting op 'func.return'
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// CHECK: Visiting op 'func.func'
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// CHECK: Visiting op 'builtin.module'
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// CHECK-LABEL: Block post-order visits
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// CHECK: Visiting block ^bb0 from region 0 from operation 'scf.if'
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// CHECK: Visiting block ^bb0 from region 1 from operation 'scf.if'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'scf.for'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'func.func'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'builtin.module'
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// CHECK-LABEL: Region post-order visits
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// CHECK: Visiting region 0 from operation 'scf.if'
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// CHECK: Visiting region 1 from operation 'scf.if'
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// CHECK: Visiting region 0 from operation 'scf.for'
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// CHECK: Visiting region 0 from operation 'func.func'
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// CHECK: Visiting region 0 from operation 'builtin.module'
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// CHECK-LABEL: Op reverse post-order visits
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// CHECK: Visiting op 'func.return'
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// CHECK: Visiting op 'scf.yield'
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// CHECK: Visiting op 'use3'
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// CHECK: Visiting op 'scf.yield'
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// CHECK: Visiting op 'use2'
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// CHECK: Visiting op 'scf.yield'
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// CHECK: Visiting op 'use1'
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// CHECK: Visiting op 'scf.if'
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// CHECK: Visiting op 'use0'
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// CHECK: Visiting op 'scf.for'
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// CHECK: Visiting op 'arith.constant'
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// CHECK: Visiting op 'arith.constant'
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// CHECK: Visiting op 'arith.constant'
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// CHECK: Visiting op 'func.func'
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// CHECK: Visiting op 'builtin.module'
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// CHECK-LABEL: Invoke block pre-order visits on blocks
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// CHECK: Visiting block ^bb0 from region 0 from operation 'scf.for'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'scf.if'
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// CHECK: Visiting block ^bb0 from region 1 from operation 'scf.if'
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// CHECK-LABEL: Invoke block post-order visits on blocks
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// CHECK: Visiting block ^bb0 from region 0 from operation 'scf.if'
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// CHECK: Visiting block ^bb0 from region 1 from operation 'scf.if'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'scf.for'
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// CHECK-LABEL: Invoke region pre-order visits on region
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// CHECK: Visiting region 0 from operation 'scf.for'
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// CHECK: Visiting region 0 from operation 'scf.if'
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// CHECK: Visiting region 1 from operation 'scf.if'
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// CHECK-LABEL: Invoke region post-order visits on region
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// CHECK: Visiting region 0 from operation 'scf.if'
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// CHECK: Visiting region 1 from operation 'scf.if'
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// CHECK: Visiting region 0 from operation 'scf.for'
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// CHECK-LABEL: Op pre-order erasures
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// CHECK: Erasing op 'scf.for'
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// CHECK: Erasing op 'func.return'
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// CHECK-LABEL: Block pre-order erasures
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// CHECK: Erasing block ^bb0 from region 0 from operation 'scf.for'
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// CHECK-LABEL: Op post-order erasures (skip)
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// CHECK: Erasing op 'use0'
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// CHECK: Erasing op 'use1'
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// CHECK: Erasing op 'use2'
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// CHECK: Erasing op 'scf.if'
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// CHECK: Erasing op 'use3'
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// CHECK: Erasing op 'scf.for'
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// CHECK: Erasing op 'func.return'
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// CHECK-LABEL: Block post-order erasures (skip)
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// CHECK: Erasing block ^bb0 from region 0 from operation 'scf.if'
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// CHECK: Erasing block ^bb0 from region 1 from operation 'scf.if'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'scf.for'
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// CHECK-LABEL: Op post-order erasures (no skip)
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// CHECK: Erasing op 'use0'
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// CHECK: Erasing op 'use1'
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// CHECK: Erasing op 'use2'
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// CHECK: Erasing op 'scf.if'
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// CHECK: Erasing op 'use3'
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// CHECK: Erasing op 'scf.for'
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// CHECK: Erasing op 'func.return'
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// CHECK: Erasing op 'func.func'
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// CHECK: Erasing op 'builtin.module'
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// CHECK-LABEL: Block post-order erasures (no skip)
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// CHECK: Erasing block ^bb0 from region 0 from operation 'scf.if'
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// CHECK: Erasing block ^bb0 from region 1 from operation 'scf.if'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'scf.for'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'func.func'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'builtin.module'
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// -----
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func.func @unstructured_cfg() {
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"regionOp0"() ({
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^bb0:
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"op0"() : () -> ()
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cf.br ^bb2
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^bb1:
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"op1"() : () -> ()
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cf.br ^bb2
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^bb2:
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"op2"() : () -> ()
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}) : () -> ()
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return
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}
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// CHECK-LABEL: Op pre-order visits
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// CHECK: Visiting op 'builtin.module'
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// CHECK: Visiting op 'func.func'
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// CHECK: Visiting op 'regionOp0'
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// CHECK: Visiting op 'op0'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op1'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op2'
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// CHECK: Visiting op 'func.return'
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// CHECK-LABEL: Block pre-order visits
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// CHECK: Visiting block ^bb0 from region 0 from operation 'builtin.module'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'func.func'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb1 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb2 from region 0 from operation 'regionOp0'
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// CHECK-LABEL: Region pre-order visits
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// CHECK: Visiting region 0 from operation 'builtin.module'
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// CHECK: Visiting region 0 from operation 'func.func'
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// CHECK: Visiting region 0 from operation 'regionOp0'
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// CHECK-LABEL: Op post-order visits
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// CHECK: Visiting op 'op0'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op1'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op2'
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// CHECK: Visiting op 'regionOp0'
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// CHECK: Visiting op 'func.return'
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// CHECK: Visiting op 'func.func'
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// CHECK: Visiting op 'builtin.module'
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// CHECK-LABEL: Block post-order visits
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// CHECK: Visiting block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb1 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb2 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'func.func'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'builtin.module'
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// CHECK-LABEL: Region post-order visits
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// CHECK: Visiting region 0 from operation 'regionOp0'
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// CHECK: Visiting region 0 from operation 'func.func'
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// CHECK: Visiting region 0 from operation 'builtin.module'
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// CHECK-LABEL: Op reverse post-order visits
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// CHECK: Visiting op 'func.return'
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// CHECK: Visiting op 'op2'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op1'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op0'
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// CHECK: Visiting op 'regionOp0'
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// CHECK: Visiting op 'func.func'
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// CHECK: Visiting op 'builtin.module'
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// CHECK-LABEL: Block reverse post-order visits
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// CHECK: Visiting block ^bb2 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb1 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'func.func'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'builtin.module'
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// CHECK-LABEL: Region reverse post-order visits
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// CHECK: Visiting region 0 from operation 'regionOp0'
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// CHECK: Visiting region 0 from operation 'func.func'
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// CHECK: Visiting region 0 from operation 'builtin.module'
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// CHECK-LABEL: Op pre-order erasures (skip)
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// CHECK: Erasing op 'regionOp0'
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// CHECK: Erasing op 'func.return'
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// CHECK-LABEL: Block pre-order erasures (skip)
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK-LABEL: Op post-order erasures (skip)
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// CHECK: Erasing op 'op0'
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// CHECK: Erasing op 'cf.br'
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// CHECK: Erasing op 'op1'
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// CHECK: Erasing op 'cf.br'
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// CHECK: Erasing op 'op2'
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// CHECK: Erasing op 'regionOp0'
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// CHECK: Erasing op 'func.return'
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// CHECK-LABEL: Block post-order erasures (skip)
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK-LABEL: Op post-order erasures (no skip)
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// CHECK: Erasing op 'op0'
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// CHECK: Erasing op 'cf.br'
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// CHECK: Erasing op 'op1'
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// CHECK: Erasing op 'cf.br'
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// CHECK: Erasing op 'op2'
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// CHECK: Erasing op 'regionOp0'
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// CHECK: Erasing op 'func.return'
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// CHECK-LABEL: Block post-order erasures (no skip)
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'func.func'
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// CHECK: Erasing block ^bb0 from region 0 from operation 'builtin.module'
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// -----
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func.func @unordered_cfg_with_loop() {
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"regionOp0"() ({
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^bb0:
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%c = "op0"() : () -> (i1)
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cf.cond_br %c, ^bb2, ^bb3
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^bb1:
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"op1"(%val) : (i32) -> ()
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cf.br ^bb5
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^bb2:
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%val = "op2"() : () -> (i32)
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cf.br ^bb1
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^bb3:
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"op3"() : () -> ()
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cf.br ^bb2
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^bb4:
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"op4"() : () -> ()
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cf.br ^bb2
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^bb5:
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"op5"() : () -> ()
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cf.br ^bb7
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^bb6:
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"op6"() : () -> ()
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cf.br ^bb6
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^bb7:
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"op7"() : () -> ()
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}) : () -> ()
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return
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}
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// 4
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// |
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// v
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// 0 -> 2 --> 1 --> 5 --> 7
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// | ^
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// | | 6 --
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// | / ^ \
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// | / \ /
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// v / --
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// 3
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// CHECK-LABEL: Op forward dominance post-order visits
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// CHECK: Visiting op 'op0'
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// CHECK: Visiting op 'cf.cond_br'
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// CHECK: Visiting op 'op2'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op1'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op5'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op7'
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// CHECK: Visiting op 'op3'
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// CHECK: Visiting op 'cf.br'
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// CHECK-NOT: Visiting op 'op6'
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// CHECK: Visiting op 'regionOp0'
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// CHECK: Visiting op 'func.return'
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// CHECK: Visiting op 'func.func'
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// CHECK-LABEL: Block forward dominance post-order visits
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// CHECK: Visiting block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb2 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb1 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb5 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb7 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb3 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'func.func'
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// CHECK-LABEL: Region forward dominance post-order visits
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// CHECK: Visiting region 0 from operation 'regionOp0'
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// CHECK: Visiting region 0 from operation 'func.func'
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// CHECK-LABEL: Op reverse dominance post-order visits
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// CHECK: Visiting op 'func.return'
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// CHECK-NOT: Visiting op 'op6'
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// CHECK: Visiting op 'op7'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op5'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op1'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op2'
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// CHECK: Visiting op 'cf.br'
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// CHECK: Visiting op 'op3'
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// CHECK: Visiting op 'cf.cond_br'
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// CHECK: Visiting op 'op0'
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// CHECK: Visiting op 'regionOp0'
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// CHECK: Visiting op 'func.func'
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// CHECK-LABEL: Block reverse dominance post-order visits
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// CHECK: Visiting block ^bb7 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb5 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb1 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb2 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb3 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Visiting block ^bb0 from region 0 from operation 'func.func'
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// CHECK-LABEL: Region reverse dominance post-order visits
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// CHECK: Visiting region 0 from operation 'regionOp0'
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// CHECK: Visiting region 0 from operation 'func.func'
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// CHECK-LABEL: Block pre-order erasures (skip)
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// CHECK: Erasing block ^bb0 from region 0 from operation 'regionOp0'
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// CHECK: Cannot erase block ^bb0 from region 0 from operation 'regionOp0', still has uses
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// CHECK: Cannot erase block ^bb1 from region 0 from operation 'regionOp0', still has uses
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// CHECK: Erasing block ^bb2 from region 0 from operation 'regionOp0'
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// CHECK: Erasing block ^bb2 from region 0 from operation 'regionOp0'
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// CHECK: Cannot erase block ^bb2 from region 0 from operation 'regionOp0', still has uses
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// CHECK: Cannot erase block ^bb3 from region 0 from operation 'regionOp0', still has uses
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// CHECK: Cannot erase block ^bb4 from region 0 from operation 'regionOp0', still has uses
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