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1// RUN: mlir-opt -allow-unregistered-dialect -split-input-file -test-merge-blocks -verify-diagnostics %s | FileCheck %s2 3// CHECK-LABEL: @merge_blocks4func.func @merge_blocks(%arg0: i32, %arg1 : i32) -> () {5 // CHECK: "test.merge_blocks"() ({6 // CHECK-NEXT: "test.return"7 // CHECK-NEXT: })8 // CHECK-NEXT: "test.return"9 %0:2 = "test.merge_blocks"() ({10 ^bb0:11 "test.br"(%arg0, %arg1)[^bb1] : (i32, i32) -> ()12 ^bb1(%arg3 : i32, %arg4 : i32):13 "test.return"(%arg3, %arg4) : (i32, i32) -> ()14 }) : () -> (i32, i32)15 "test.return"(%0#0, %0#1) : (i32, i32) -> ()16}17 18// -----19 20// The op in this function is rewritten to itself (and thus remains21// illegal) by a pattern that merges the second block with the first22// after adding an operation into it. Check that we can undo block23// removal successfully.24// CHECK-LABEL: @undo_blocks_merge25func.func @undo_blocks_merge(%arg0: i32) {26 "test.undo_blocks_merge"() ({27 // expected-remark@-1 {{op 'test.undo_blocks_merge' is not legalizable}}28 // CHECK: "unregistered.return"(%{{.*}})[^[[BB:.*]]]29 "unregistered.return"(%arg0)[^bb1] : (i32) -> ()30 // expected-remark@-1 {{op 'unregistered.return' is not legalizable}}31 // CHECK: ^[[BB]]32 ^bb1(%arg1 : i32):33 // CHECK: "unregistered.return"34 "unregistered.return"(%arg1) : (i32) -> ()35 // expected-remark@-1 {{op 'unregistered.return' is not legalizable}}36 }) : () -> ()37}38 39// -----40 41// CHECK-LABEL: @inline_regions()42func.func @inline_regions() -> ()43{44 // CHECK: test.SingleBlockImplicitTerminator45 // CHECK-NEXT: %[[T0:.*]] = "test.type_producer"46 // CHECK-NEXT: "test.type_consumer"(%[[T0]])47 // CHECK-NEXT: "test.finish"48 "test.SingleBlockImplicitTerminator"() ({49 ^bb0:50 %0 = "test.type_producer"() : () -> i3251 "test.SingleBlockImplicitTerminator"() ({52 ^bb1:53 "test.type_consumer"(%0) : (i32) -> ()54 "test.finish"() : () -> ()55 }) : () -> ()56 "test.finish"() : () -> ()57 }) : () -> ()58 "test.return"() : () -> ()59}60