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|
// RUN: mlir-opt %s -async-runtime-ref-counting | FileCheck %s
// CHECK-LABEL: @token
func.func private @token() -> !async.token
// CHECK-LABEL: @cond
func.func private @cond() -> i1
// CHECK-LABEL: @take_token
func.func private @take_token(%arg0: !async.token)
// CHECK-LABEL: @token_arg_no_uses
// CHECK: %[[TOKEN:.*]]: !async.token
func.func @token_arg_no_uses(%arg0: !async.token) {
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
return
}
// CHECK-LABEL: @token_value_no_uses
func.func @token_value_no_uses() {
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
%0 = async.runtime.create : !async.token
return
}
// CHECK-LABEL: @token_returned_no_uses
func.func @token_returned_no_uses() {
// CHECK: %[[TOKEN:.*]] = call @token
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
%0 = call @token() : () -> !async.token
return
}
// CHECK-LABEL: @token_arg_to_func
// CHECK: %[[TOKEN:.*]]: !async.token
func.func @token_arg_to_func(%arg0: !async.token) {
// CHECK: async.runtime.add_ref %[[TOKEN]] {count = 1 : i64} : !async.token
call @take_token(%arg0): (!async.token) -> ()
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64} : !async.token
return
}
// CHECK-LABEL: @token_value_to_func
func.func @token_value_to_func() {
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
%0 = async.runtime.create : !async.token
// CHECK: async.runtime.add_ref %[[TOKEN]] {count = 1 : i64} : !async.token
call @take_token(%0): (!async.token) -> ()
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
return
}
// CHECK-LABEL: @token_arg_cond_br_await_with_fallthough
// CHECK: %[[TOKEN:.*]]: !async.token
func.func @token_arg_cond_br_await_with_fallthough(%arg0: !async.token, %arg1: i1) {
// CHECK: cf.cond_br
// CHECK-SAME: ^[[BB1:.*]], ^[[BB2:.*]]
cf.cond_br %arg1, ^bb1, ^bb2
^bb1:
// CHECK: ^[[BB1]]:
// CHECK: cf.br ^[[BB2]]
cf.br ^bb2
^bb2:
// CHECK: ^[[BB2]]:
// CHECK: async.runtime.await %[[TOKEN]]
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
async.runtime.await %arg0 : !async.token
return
}
// CHECK-LABEL: @token_simple_return
func.func @token_simple_return() -> !async.token {
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
%token = async.runtime.create : !async.token
// CHECK: return %[[TOKEN]]
return %token : !async.token
}
// CHECK-LABEL: @token_coro_return
// CHECK-NOT: async.runtime.drop_ref
// CHECK-NOT: async.runtime.add_ref
func.func @token_coro_return() -> !async.token {
%token = async.runtime.create : !async.token
%id = async.coro.id
%hdl = async.coro.begin %id
%saved = async.coro.save %hdl
async.runtime.resume %hdl
async.coro.suspend %saved, ^suspend, ^resume, ^cleanup
^resume:
cf.br ^cleanup
^cleanup:
async.coro.free %id, %hdl
cf.br ^suspend
^suspend:
async.coro.end %hdl
return %token : !async.token
}
// CHECK-LABEL: @token_coro_await_and_resume
// CHECK: %[[TOKEN:.*]]: !async.token
func.func @token_coro_await_and_resume(%arg0: !async.token) -> !async.token {
%token = async.runtime.create : !async.token
%id = async.coro.id
%hdl = async.coro.begin %id
%saved = async.coro.save %hdl
// CHECK: async.runtime.await_and_resume %[[TOKEN]]
async.runtime.await_and_resume %arg0, %hdl : !async.token
// CHECK-NEXT: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
async.coro.suspend %saved, ^suspend, ^resume, ^cleanup
^resume:
cf.br ^cleanup
^cleanup:
async.coro.free %id, %hdl
cf.br ^suspend
^suspend:
async.coro.end %hdl
return %token : !async.token
}
// CHECK-LABEL: @value_coro_await_and_resume
// CHECK: %[[VALUE:.*]]: !async.value<f32>
func.func @value_coro_await_and_resume(%arg0: !async.value<f32>) -> !async.token {
%token = async.runtime.create : !async.token
%id = async.coro.id
%hdl = async.coro.begin %id
%saved = async.coro.save %hdl
// CHECK: async.runtime.await_and_resume %[[VALUE]]
async.runtime.await_and_resume %arg0, %hdl : !async.value<f32>
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME:.*]], ^[[CLEANUP:.*]]
async.coro.suspend %saved, ^suspend, ^resume, ^cleanup
^resume:
// CHECK: ^[[RESUME]]:
// CHECK: %[[LOADED:.*]] = async.runtime.load %[[VALUE]]
// CHECK: async.runtime.drop_ref %[[VALUE]] {count = 1 : i64}
%0 = async.runtime.load %arg0 : !async.value<f32>
// CHECK: arith.addf %[[LOADED]], %[[LOADED]]
%1 = arith.addf %0, %0 : f32
cf.br ^cleanup
^cleanup:
async.coro.free %id, %hdl
cf.br ^suspend
^suspend:
async.coro.end %hdl
return %token : !async.token
}
// CHECK-LABEL: @outlined_async_execute
// CHECK: %[[TOKEN:.*]]: !async.token
func.func private @outlined_async_execute(%arg0: !async.token) -> !async.token {
%0 = async.runtime.create : !async.token
%1 = async.coro.id
%2 = async.coro.begin %1
%3 = async.coro.save %2
async.runtime.resume %2
// CHECK: async.coro.suspend
async.coro.suspend %3, ^suspend, ^resume, ^cleanup
^resume:
// CHECK: ^[[RESUME:.*]]:
%4 = async.coro.save %2
async.runtime.await_and_resume %arg0, %2 : !async.token
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
// CHECK: async.coro.suspend
async.coro.suspend %4, ^suspend, ^resume_1, ^cleanup
^resume_1:
// CHECK: ^[[RESUME_1:.*]]:
// CHECK: async.runtime.set_available
async.runtime.set_available %0 : !async.token
cf.br ^cleanup
^cleanup:
// CHECK: ^[[CLEANUP:.*]]:
// CHECK: async.coro.free
async.coro.free %1, %2
cf.br ^suspend
^suspend:
// CHECK: ^[[SUSPEND:.*]]:
// CHECK: async.coro.end
async.coro.end %2
return %0 : !async.token
}
// CHECK-LABEL: @token_await_inside_nested_region
// CHECK: %[[ARG:.*]]: i1
func.func @token_await_inside_nested_region(%arg0: i1) {
// CHECK: %[[TOKEN:.*]] = call @token()
%token = call @token() : () -> !async.token
// CHECK: scf.if %[[ARG]] {
scf.if %arg0 {
// CHECK: async.runtime.await %[[TOKEN]]
async.runtime.await %token : !async.token
}
// CHECK: }
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
// CHECK: return
return
}
// CHECK-LABEL: @token_defined_in_the_loop
func.func @token_defined_in_the_loop() {
cf.br ^bb1
^bb1:
// CHECK: ^[[BB1:.*]]:
// CHECK: %[[TOKEN:.*]] = call @token()
%token = call @token() : () -> !async.token
// CHECK: async.runtime.await %[[TOKEN]]
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
async.runtime.await %token : !async.token
%0 = call @cond(): () -> (i1)
cf.cond_br %0, ^bb1, ^bb2
^bb2:
// CHECK: ^[[BB2:.*]]:
// CHECK: return
return
}
// CHECK-LABEL: @divergent_liveness_one_token
func.func @divergent_liveness_one_token(%arg0 : i1) {
// CHECK: %[[TOKEN:.*]] = call @token()
%token = call @token() : () -> !async.token
// CHECK: cf.cond_br %arg0, ^[[LIVE_IN:.*]], ^[[REF_COUNTING:.*]]
cf.cond_br %arg0, ^bb1, ^bb2
^bb1:
// CHECK: ^[[LIVE_IN]]:
// CHECK: async.runtime.await %[[TOKEN]]
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
// CHECK: cf.br ^[[RETURN:.*]]
async.runtime.await %token : !async.token
cf.br ^bb2
// CHECK: ^[[REF_COUNTING:.*]]:
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
// CHECK: cf.br ^[[RETURN:.*]]
^bb2:
// CHECK: ^[[RETURN]]:
// CHECK: return
return
}
// CHECK-LABEL: @divergent_liveness_unique_predecessor
func.func @divergent_liveness_unique_predecessor(%arg0 : i1) {
// CHECK: %[[TOKEN:.*]] = call @token()
%token = call @token() : () -> !async.token
// CHECK: cf.cond_br %arg0, ^[[LIVE_IN:.*]], ^[[NO_LIVE_IN:.*]]
cf.cond_br %arg0, ^bb2, ^bb1
^bb1:
// CHECK: ^[[NO_LIVE_IN]]:
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
// CHECK: cf.br ^[[RETURN:.*]]
cf.br ^bb3
^bb2:
// CHECK: ^[[LIVE_IN]]:
// CHECK: async.runtime.await %[[TOKEN]]
// CHECK: async.runtime.drop_ref %[[TOKEN]] {count = 1 : i64}
// CHECK: cf.br ^[[RETURN]]
async.runtime.await %token : !async.token
cf.br ^bb3
^bb3:
// CHECK: ^[[RETURN]]:
// CHECK: return
return
}
// CHECK-LABEL: @divergent_liveness_two_tokens
func.func @divergent_liveness_two_tokens(%arg0 : i1) {
// CHECK: %[[TOKEN0:.*]] = call @token()
// CHECK: %[[TOKEN1:.*]] = call @token()
%token0 = call @token() : () -> !async.token
%token1 = call @token() : () -> !async.token
// CHECK: cf.cond_br %arg0, ^[[AWAIT0:.*]], ^[[AWAIT1:.*]]
cf.cond_br %arg0, ^await0, ^await1
^await0:
// CHECK: ^[[AWAIT0]]:
// CHECK: async.runtime.drop_ref %[[TOKEN1]] {count = 1 : i64}
// CHECK: async.runtime.await %[[TOKEN0]]
// CHECK: async.runtime.drop_ref %[[TOKEN0]] {count = 1 : i64}
// CHECK: cf.br ^[[RETURN:.*]]
async.runtime.await %token0 : !async.token
cf.br ^ret
^await1:
// CHECK: ^[[AWAIT1]]:
// CHECK: async.runtime.drop_ref %[[TOKEN0]] {count = 1 : i64}
// CHECK: async.runtime.await %[[TOKEN1]]
// CHECK: async.runtime.drop_ref %[[TOKEN1]] {count = 1 : i64}
// CHECK: cf.br ^[[RETURN]]
async.runtime.await %token1 : !async.token
cf.br ^ret
^ret:
// CHECK: ^[[RETURN]]:
// CHECK: return
return
}
|
