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