1 // RUN: mlir-opt -allow-unregistered-dialect -mlir-print-value-users -split-input-file %s | FileCheck %s
4 // CHECK: %[[ARG0:.+]]: i32, %[[ARG1:.+]]: i32, %[[ARG2:.+]]: i32
5 func.func @foo(%arg0: i32, %arg1: i32, %arg3: i32) -> i32 {
6 // CHECK-NEXT: // %[[ARG0]] is used by %[[ARG0U1:.+]], %[[ARG0U2:.+]], %[[ARG0U3:.+]]
7 // CHECK-NEXT: // %[[ARG1]] is used by %[[ARG1U1:.+]], %[[ARG1U2:.+]]
8 // CHECK-NEXT: // %[[ARG2]] is unused
9 // CHECK-NEXT: test.noop
10 // CHECK-NOT: // unused
11 "test.noop"() : () -> ()
12 // When no result is produced, an id should be printed.
13 // CHECK-NEXT: // id: %[[ARG0U3]]
14 "test.no_result"(%arg0) {} : (i32) -> ()
15 // Check for unused result.
16 // CHECK-NEXT: %[[ARG0U2]] =
17 // CHECK-SAME: // unused
18 %1 = "test.unused_result"(%arg0, %arg1) {} : (i32, i32) -> i32
19 // Check that both users are printed.
20 // CHECK-NEXT: %[[ARG0U1]] =
21 // CHECK-SAME: // users: %[[A:.+]]#0, %[[A]]#1
22 %2 = "test.one_result"(%arg0, %arg1) {} : (i32, i32) -> i32
23 // For multiple results, users should be grouped per result.
24 // CHECK-NEXT: %[[A]]:2 =
25 // CHECK-SAME: // users: (%[[B:.+]], %[[C:.+]]), (%[[B]], %[[D:.+]])
26 %3:2 = "test.many_results"(%2) {} : (i32) -> (i32, i32)
27 // Two results are produced, but there is only one user.
28 // CHECK-NEXT: // users:
29 %7:2 = "test.many_results"() : () -> (i32, i32)
30 // CHECK-NEXT: %[[C]] =
31 // Result is used twice in next operation but it produces only one result.
32 // CHECK-SAME: // user:
33 %4 = "test.foo"(%3#0) {} : (i32) -> i32
34 // CHECK-NEXT: %[[D]] =
35 %5 = "test.foo"(%3#1, %4, %4) {} : (i32, i32, i32) -> i32
36 // CHECK-NEXT: %[[B]] =
37 // Result is not used in any other result but in two operations.
38 // CHECK-SAME: // users:
39 %6 = "test.foo"(%3#0, %3#1) {} : (i32, i32) -> i32
40 "test.no_result"(%6) {} : (i32) -> ()
41 "test.no_result"(%7#0) : (i32) -> ()
49 // Check with nested operation.
50 // CHECK: %[[CONSTNAME:.+]] = arith.constant
51 %0 = arith.constant 42 : i32
52 %test = "test.outerop"(%0) ({
53 // CHECK: "test.innerop"(%[[CONSTNAME]]) : (i32) -> () // id: %
54 "test.innerop"(%0) : (i32) -> ()
55 // CHECK: (i32) -> i32 // users: %r, %s, %p, %p_0, %q
58 // Check named results.
59 // CHECK-NEXT: // users: (%u, %v), (unused), (%u, %v, %r, %s)
60 %p:2, %q = "test.custom_result_name"(%test) {names = ["p", "p", "q"]} : (i32) -> (i32, i32, i32)
61 // CHECK-NEXT: // users: (unused), (%u, %v)
62 %r, %s = "test.custom_result_name"(%q#0, %q#0, %test) {names = ["r", "s"]} : (i32, i32, i32) -> (i32, i32)
63 // CHECK-NEXT: // unused
64 %u, %v = "test.custom_result_name"(%s, %q#0, %p) {names = ["u", "v"]} : (i32, i32, i32) -> (i32, i32)