test/Target/LLVMIR/Import/global-variables.ll

; RUN: mlir-translate -import-llvm -split-input-file %s | FileCheck %s

%sub_struct = type {}
%my_struct = type { %sub_struct, i64 }

; CHECK:  llvm.mlir.global external @global_struct
; CHECK-SAME:  {addr_space = 0 : i32, alignment = 8 : i64}
; CHECK-SAME:  !llvm.struct<"my_struct", (struct<"sub_struct", ()>, i64)>
@global_struct = external global %my_struct, align 8

; CHECK:  llvm.mlir.global external @global_float
; CHECK-SAME:  {addr_space = 0 : i32, alignment = 8 : i64} : f64
@global_float = external global double, align 8

; CHECK:  llvm.mlir.global internal constant @address_before
; CHECK:  = llvm.mlir.addressof @global_int : !llvm.ptr
@address_before = internal constant ptr @global_int

; CHECK:  llvm.mlir.global external @global_int
; CHECK-SAME:  {addr_space = 0 : i32, alignment = 8 : i64} : i32
@global_int = external global i32, align 8

; CHECK:  llvm.mlir.global internal constant @address_after
; CHECK:  = llvm.mlir.addressof @global_int : !llvm.ptr
@address_after = internal constant ptr @global_int

; CHECK:  llvm.mlir.global internal @global_string("hello world")
@global_string = internal global [11 x i8] c"hello world"

; CHECK:  llvm.mlir.global external @global_vector
; CHECK-SAME:  {addr_space = 0 : i32} : vector<8xi32>
@global_vector = external global <8 x i32>

; CHECK: llvm.mlir.global internal constant @global_gep_const_expr
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.ptr {
; CHECK-DAG:  %[[ADDR:[0-9]+]] = llvm.mlir.addressof @global_int : !llvm.ptr
; CHECK-DAG:  %[[IDX:[0-9]+]] = llvm.mlir.constant(2 : i32) : i32
; CHECK-DAG:  %[[GEP:[0-9]+]] = llvm.getelementptr %[[ADDR]][%[[IDX]]] : (!llvm.ptr, i32) -> !llvm.ptr
; CHECK-DAG:  llvm.return %[[GEP]] : !llvm.ptr
@global_gep_const_expr = internal constant ptr getelementptr (i32, ptr @global_int, i32 2)

; // -----

; Verifies that converting a reference to a global does not convert the global
; a second time.

; CHECK-LABEL: llvm.mlir.global external constant @reference
; CHECK-NEXT: %[[ADDR:.*]] = llvm.mlir.addressof @simple
; CHECK-NEXT: llvm.return %[[ADDR]]
@reference = constant ptr @simple

@simple = global { ptr } { ptr null }

; // -----

; CHECK-LABEL: llvm.mlir.global external @recursive
; CHECK: %[[ADDR:.*]] = llvm.mlir.addressof @recursive
; CHECK: llvm.return %[[ADDR]]
@recursive = global ptr @recursive

; // -----

; alignment attribute.

; CHECK:  llvm.mlir.global private @global_int_align_32
; CHECK-SAME:  (42 : i64) {addr_space = 0 : i32, alignment = 32 : i64, dso_local} : i64
@global_int_align_32 = private global i64 42, align 32

; CHECK:  llvm.mlir.global private @global_int_align_64
; CHECK-SAME:  (42 : i64) {addr_space = 0 : i32, alignment = 64 : i64, dso_local} : i64
@global_int_align_64 = private global i64 42, align 64

; // -----

; dso_local attribute.

%sub_struct = type {}
%my_struct = type { %sub_struct, i64 }

; CHECK:  llvm.mlir.global external @dso_local_var
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.struct<"my_struct", (struct<"sub_struct", ()>, i64)>
@dso_local_var = external dso_local global %my_struct

; // -----

; thread_local attribute.

%sub_struct = type {}
%my_struct = type { %sub_struct, i64 }

; CHECK:  llvm.mlir.global external thread_local @thread_local_var
; CHECK-SAME:  {addr_space = 0 : i32} : !llvm.struct<"my_struct", (struct<"sub_struct", ()>, i64)>
@thread_local_var = external thread_local global %my_struct

; // -----

; addr_space attribute.

; CHECK:  llvm.mlir.global external @addr_space_var
; CHECK-SAME:  (0 : i32) {addr_space = 6 : i32} : i32
@addr_space_var = addrspace(6) global i32 0

; // -----

; Linkage attributes.

; CHECK:  llvm.mlir.global private @private
; CHECK-SAME:  (42 : i32) {addr_space = 0 : i32, dso_local} : i32
@private = private global i32 42

; CHECK:  llvm.mlir.global internal @internal
; CHECK-SAME:  (42 : i32) {addr_space = 0 : i32, dso_local} : i32
@internal = internal global i32 42

; CHECK:  llvm.mlir.global available_externally @available_externally
; CHECK-SAME:  (42 : i32) {addr_space = 0 : i32}  : i32
@available_externally = available_externally global i32 42

; CHECK:  llvm.mlir.global linkonce @linkonce
; CHECK-SAME:  (42 : i32) {addr_space = 0 : i32} : i32
@linkonce = linkonce global i32 42

; CHECK:  llvm.mlir.global weak @weak
; CHECK-SAME:  (42 : i32) {addr_space = 0 : i32} : i32
@weak = weak global i32 42

; CHECK:  llvm.mlir.global common @common
; CHECK-SAME:  (0 : i32) {addr_space = 0 : i32} : i32
@common = common global i32 zeroinitializer

; CHECK:  llvm.mlir.global appending @appending
; CHECK-SAME:  (dense<[0, 1]> : tensor<2xi32>) {addr_space = 0 : i32} : !llvm.array<2 x i32>
@appending = appending global [2 x i32] [i32 0, i32 1]

; CHECK:  llvm.mlir.global extern_weak @extern_weak
; CHECK-SAME:  {addr_space = 0 : i32} : i32
@extern_weak = extern_weak global i32

; CHECK:  llvm.mlir.global linkonce_odr @linkonce_odr
; CHECK-SAME:  (42 : i32) {addr_space = 0 : i32} : i32
@linkonce_odr = linkonce_odr global i32 42

; CHECK:  llvm.mlir.global weak_odr @weak_odr
; CHECK-SAME:  (42 : i32) {addr_space = 0 : i32} : i32
@weak_odr = weak_odr global i32 42

; CHECK:  llvm.mlir.global external @external
; CHECK-SAME:  {addr_space = 0 : i32} : i32
@external = external global i32

; // -----

; local_unnamed_addr and unnamed_addr attributes.

; CHECK:  llvm.mlir.global private constant @no_unnamed_addr
; CHECK-SAME:  (42 : i64) {addr_space = 0 : i32, dso_local} : i64
@no_unnamed_addr = private constant i64 42

; CHECK:  llvm.mlir.global private local_unnamed_addr constant @local_unnamed_addr
; CHECK-SAME:  (42 : i64) {addr_space = 0 : i32, dso_local} : i64
@local_unnamed_addr = private local_unnamed_addr constant i64 42

; CHECK:  llvm.mlir.global private unnamed_addr constant @unnamed_addr
; CHECK-SAME:  (42 : i64) {addr_space = 0 : i32, dso_local} : i64
@unnamed_addr = private unnamed_addr constant i64 42

; // -----

; section attribute.

; CHECK:  llvm.mlir.global internal constant @sectionvar("hello world")
; CHECK-SAME:  {addr_space = 0 : i32, dso_local, section = ".mysection"}
@sectionvar = internal constant [11 x i8] c"hello world", section ".mysection"

; // -----

; Sequential constants.

; CHECK:  llvm.mlir.global internal constant @vector_constant
; CHECK-SAME:  (dense<[1, 2]> : vector<2xi32>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : vector<2xi32>
@vector_constant = internal constant <2 x i32> <i32 1, i32 2>

; CHECK:  llvm.mlir.global internal constant @array_constant
; CHECK-SAME:  (dense<[1.000000e+00, 2.000000e+00]> : tensor<2xf32>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.array<2 x f32>
@array_constant = internal constant [2 x float] [float 1., float 2.]

; CHECK{LITERAL}: llvm.mlir.global internal constant @nested_array_constant(dense<[[1, 2], [3, 4]]> : tensor<2x2xi32>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.array<2 x array<2 x i32>>
@nested_array_constant = internal constant [2 x [2 x i32]] [[2 x i32] [i32 1, i32 2], [2 x i32] [i32 3, i32 4]]

; CHECK{LITERAL}: llvm.mlir.global internal constant @nested_array_constant3(dense<[[[1, 2], [3, 4]]]> : tensor<1x2x2xi32>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.array<1 x array<2 x array<2 x i32>>>
@nested_array_constant3 = internal constant [1 x [2 x [2 x i32]]] [[2 x [2 x i32]] [[2 x i32] [i32 1, i32 2], [2 x i32] [i32 3, i32 4]]]

; CHECK{LITERAL}: llvm.mlir.global internal constant @nested_array_vector(dense<[[[1, 2], [3, 4]]]> : vector<1x2x2xi32>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.array<1 x array<2 x vector<2xi32>>>
@nested_array_vector = internal constant [1 x [2 x <2 x i32>]] [[2 x <2 x i32>] [<2 x i32> <i32 1, i32 2>, <2 x i32> <i32 3, i32 4>]]

; CHECK:  llvm.mlir.global internal constant @vector_constant_zero
; CHECK-SAME:  (dense<0> : vector<2xi24>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : vector<2xi24>
@vector_constant_zero = internal constant <2 x i24> zeroinitializer

; CHECK:  llvm.mlir.global internal constant @array_constant_zero
; CHECK-SAME:  (dense<0.000000e+00> : tensor<2xbf16>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.array<2 x bf16>
@array_constant_zero = internal constant [2 x bfloat] zeroinitializer

; CHECK: llvm.mlir.global internal constant @nested_array_constant3_zero
; CHECK-SAME:  (dense<0> : tensor<1x2x2xi32>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.array<1 x array<2 x array<2 x i32>>>
@nested_array_constant3_zero = internal constant [1 x [2 x [2 x i32]]] zeroinitializer

; CHECK: llvm.mlir.global internal constant @nested_array_vector_zero
; CHECK-SAME:  (dense<0> : vector<1x2x2xi32>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.array<1 x array<2 x vector<2xi32>>>
@nested_array_vector_zero = internal constant [1 x [2 x <2 x i32>]] zeroinitializer

; CHECK{LITERAL}: llvm.mlir.global internal constant @nested_bool_array_constant(dense<[[true, false]]> : tensor<1x2xi1>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : !llvm.array<1 x array<2 x i1>>
@nested_bool_array_constant = internal constant [1 x [2 x i1]] [[2 x i1] [i1 1, i1 0]]

; CHECK: llvm.mlir.global internal constant @quad_float_constant
; CHECK-SAME:  dense<[
; CHECK-SAME:    529.340000000000031832314562052488327
; CHECK-SAME:    529.340000000001850821718107908964157
; CHECK-SAME:  ]> : vector<2xf128>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : vector<2xf128>
@quad_float_constant = internal constant <2 x fp128> <fp128 0xLF000000000000000400808AB851EB851, fp128 0xLF000000000000000400808AB851EB852>

; CHECK: llvm.mlir.global internal constant @quad_float_splat_constant
; CHECK-SAME:  dense<529.340000000000031832314562052488327> : vector<2xf128>)
; CHECK-SAME:  {addr_space = 0 : i32, dso_local} : vector<2xf128>
@quad_float_splat_constant = internal constant <2 x fp128> <fp128 0xLF000000000000000400808AB851EB851, fp128 0xLF000000000000000400808AB851EB851>

; // -----

; CHECK: llvm.mlir.global_ctors ctors = [@foo, @bar], priorities = [0 : i32, 42 : i32], data = [#llvm.zero, #llvm.zero]
; CHECK: llvm.mlir.global_dtors dtors = [@foo], priorities = [0 : i32], data = [#llvm.zero]
@llvm.global_ctors = appending global [2 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @foo, ptr null }, { i32, ptr, ptr } { i32 42, ptr @bar, ptr null }]
@llvm.global_dtors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @foo, ptr null }]

define void @foo() {
  ret void
}

define void @bar() {
  ret void
}

; // -----

; CHECK: llvm.mlir.global_ctors ctors = [], priorities = [], data = []
@llvm.global_ctors = appending global [0 x { i32, ptr, ptr }] zeroinitializer

; CHECK: llvm.mlir.global_dtors dtors = [], priorities = [], data = []
@llvm.global_dtors = appending global [0 x { i32, ptr, ptr }] zeroinitializer

; // -----

; llvm.mlir.global_dtors dtors = [@foo], priorities = [0 : i32], data = [@foo]
@llvm.global_dtors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @foo, ptr @foo }]

define void @foo() {
  ret void
}

; // -----

; Visibility attribute.

; CHECK: llvm.mlir.global external hidden constant @hidden("string")
@hidden = hidden constant [6 x i8] c"string"

; CHECK: llvm.mlir.global external protected constant @protected(42 : i64)
@protected = protected constant i64 42

; // -----

; CHECK-DAG: #[[TYPE:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "int", sizeInBits = 32, encoding = DW_ATE_signed>
; CHECK-DAG: #[[FILE:.*]] = #llvm.di_file<"source.c" in "/path/to/file">
; CHECK-DAG: #[[CU:.*]] = #llvm.di_compile_unit<id = distinct[{{.*}}]<>, sourceLanguage = DW_LANG_C99, file = #[[FILE]], isOptimized = false, emissionKind = None>
; CHECK-DAG: #[[SPROG:.*]] = #llvm.di_subprogram<id = distinct[{{.*}}]<>, scope = #[[CU]], name = "foo", file = #[[FILE]], line = 5, subprogramFlags = Definition>
; CHECK-DAG: #[[GVAR0:.*]] = #llvm.di_global_variable<scope = #[[SPROG]], name = "foo", linkageName = "foo", file = #[[FILE]], line = 7, type = #[[TYPE]], isLocalToUnit = true>
; CHECK-DAG: #[[GVAR1:.*]] = #llvm.di_global_variable<scope = #[[SPROG]], name = "bar", linkageName = "bar", file = #[[FILE]], line = 8, type = #[[TYPE]], isLocalToUnit = true>
; CHECK-DAG: #[[EXPR0:.*]] = #llvm.di_global_variable_expression<var = #[[GVAR0]], expr = <[DW_OP_LLVM_fragment(0, 16)]>>
; CHECK-DAG: #[[EXPR1:.*]] = #llvm.di_global_variable_expression<var = #[[GVAR1]], expr = <[DW_OP_constu(3), DW_OP_plus]>>
; CHECK-DAG: llvm.mlir.global external @foo() {addr_space = 0 : i32, alignment = 8 : i64, dbg_exprs = [#[[EXPR0]]]} : i32
; CHECK-DAG: llvm.mlir.global external @bar() {addr_space = 0 : i32, alignment = 8 : i64, dbg_exprs = [#[[EXPR1]]]} : i32

@foo = external global i32, align 8, !dbg !5
@bar = external global i32, align 8, !dbg !7
!0 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!1 = !DIFile(filename: "source.c", directory: "/path/to/file")
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
!3 = distinct !DISubprogram(name: "foo", scope: !2, file: !1, line: 5)
!4 = !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !3, file: !1, line: 7, type: !0, isLocal: true, isDefinition: false)
!5 = !DIGlobalVariableExpression(var: !4, expr: !DIExpression(DW_OP_LLVM_fragment, 0, 16))
!6 = !DIGlobalVariable(name: "bar", linkageName: "bar", scope: !3, file: !1, line: 8, type: !0, isLocal: true, isDefinition: false)
!7 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression(DW_OP_constu, 3, DW_OP_plus))
!100 = !{i32 2, !"Debug Info Version", i32 3}
!llvm.module.flags = !{!100}

; // -----

; Nameless and scopeless global variable.

; CHECK-DAG: #[[FILE:.*]] = #llvm.di_file
; CHECK-DAG: #[[COMPOSITE_TYPE:.*]] = #llvm.di_composite_type
; CHECK-DAG: #[[GLOBAL_VAR:.*]] = #llvm.di_global_variable<file = #[[FILE]], line = 268, type = #[[COMPOSITE_TYPE]], isLocalToUnit = true, isDefined = true>
; CHECK-DAG: #[[GLOBAL_VAR_EXPR:.*]] = #llvm.di_global_variable_expression<var = #[[GLOBAL_VAR]], expr = <>>

; CHECK:  llvm.mlir.global private unnamed_addr constant @mlir.llvm.nameless_global_0("0\00")
; We skip over @mlir.llvm.nameless_global.1 and 2 because they exist
; CHECK:  llvm.mlir.global private unnamed_addr constant @mlir.llvm.nameless_global_3("1\00")
;
; CHECK:  llvm.mlir.global internal constant @zero() {addr_space = 0 : i32, dso_local} : !llvm.ptr {
; CHECK:    llvm.mlir.addressof @mlir.llvm.nameless_global_0 : !llvm.ptr
; CHECK:  llvm.mlir.global internal constant @one() {addr_space = 0 : i32, dso_local} : !llvm.ptr {
; CHECK:    llvm.mlir.addressof @mlir.llvm.nameless_global_3 : !llvm.ptr

; CHECK: llvm.mlir.global external constant @".str.1"() {addr_space = 0 : i32, dbg_exprs = [#[[GLOBAL_VAR_EXPR]]]}

@0 = private unnamed_addr constant [2 x i8] c"0\00"
@1 = private unnamed_addr constant [2 x i8] c"1\00"
@zero = internal constant ptr @0
@one = internal constant ptr @1

@"mlir.llvm.nameless_global_1" = external constant [10 x i8], !dbg !0
declare void @"mlir.llvm.nameless_global_2"()

@.str.1 = external constant [10 x i8], !dbg !0

!llvm.module.flags = !{!7}

!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(scope: null, file: !2, line: 268, type: !3, isLocal: true, isDefinition: true)
!2 = !DIFile(filename: "source.c", directory: "/path/to/file")
!3 = !DICompositeType(tag: DW_TAG_array_type, baseType: !4, size: 80, elements: !6)
!4 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !5)
!5 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
!6 = !{}
!7 = !{i32 2, !"Debug Info Version", i32 3}

; // -----

; Verify that unnamed globals can also be referenced before they are defined.

; CHECK:  llvm.mlir.global internal constant @reference()
; CHECK:    llvm.mlir.addressof @mlir.llvm.nameless_global_0 : !llvm.ptr
@reference = internal constant ptr @0

; CHECK:  llvm.mlir.global private unnamed_addr constant @mlir.llvm.nameless_global_0("0\00")
@0 = private unnamed_addr constant [2 x i8] c"0\00"

; // -----

; CHECK-LABEL: llvm.mlir.global external @target_specific_attrs_only
; CHECK-SAME: target_specific_attrs = {{\[\[}}"memory", "0"], ["int-attr", "4"], "no-enum-attr", ["string-attr", "string"]]}
@target_specific_attrs_only = external global double #0
attributes #0 = { readnone "int-attr"="4" "no-enum-attr" "string-attr"="string" }

; // -----

; CHECK-LABEL: llvm.mlir.global external @target_specific_attrs_combined
; CHECK-SAME: alignment = 4 : i64, section = "mysection",
; CHECK-SAME: target_specific_attrs = ["norecurse", ["bss-section", "my_bss.1"]]}
@target_specific_attrs_combined = global i32 2, align 4, section "mysection" #0
attributes #0 = { norecurse "bss-section"="my_bss.1" }