llvm/test/CodeGen/DirectX/DebugInfo/di-globalvariable.ll

; RUN: opt -S -passes=dxil-debug-info %s -o - | FileCheck %s
; RUN: llc %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-COMMENT
; RUN: opt -S -passes=dxil-debug-info %s -o - | FileCheck %s --check-prefix=NO-DUP

target triple = "dxil-unknown-shadermodel6.3-library"

;; @x is optimized away. DIGLobalVariable stays, but its variable operand is null (not printed).
;; @y is not optimized away.

@x = global i32 0, align 4, !dbg !0
@y = global i32 1, align 4, !dbg !2

define void @foo() {
  %y = load i32, ptr @y
  ret void
}

; CHECK-DAG: !llvm.dbg.cu = !{![[CU:[0-9]+]]}
; CHECK-DAG: ![[CU]] = distinct !DICompileUnit(language: DW_LANG_C, file: ![[FILE:[0-9]+]], producer: "handwritten", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: ![[GLOBALS:[0-9]+]], splitDebugInlining: false, nameTableKind: Apple, sysroot: "/")
; CHECK-DAG: ![[GLOBALS]] = !{![[GVEX:[0-9]+]], ![[GVEY:[0-9]+]]}
; CHECK-DAG: ![[GVEX]] = !DIGlobalVariableExpression(var: ![[GVX:[0-9]+]], expr: !DIExpression())
; CHECK-COMMENT-DAG: DXIL: ![[GVEX]]: to be replaced by: ![[GVX]]
; CHECK-DAG: ![[GVX]] = !DIGlobalVariable(name: "x", scope: ![[CU]], file: ![[FILE]], line: 1, type: ![[TYPE:[0-9]+]], isLocal: false, isDefinition: true)
; CHECK-DAG: ![[GVEY]] = !DIGlobalVariableExpression(var: ![[GVY:[0-9]+]], expr: !DIExpression())
; CHECK-COMMENT-DAG: DXIL: ![[GVEY]]: to be replaced by: ![[GVY]]
; CHECK-DAG: ![[GVY]] = !DIGlobalVariable(name: "y", scope: ![[CU]], file: ![[FILE]], line: 1, type: ![[TYPE:[0-9]+]], isLocal: false, isDefinition: true)
; CHECK-COMMENT-DAG: DXIL: ![[GVY]]: additional data: ptr @y
; CHECK-DAG: ![[FILE]] = !DIFile(filename: "cu.cpp", directory: "/tmp")
; CHECK-DAG: ![[TYPE]] = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)

; NO-DUP: ![[GVX:[0-9]+]] = !DIGlobalVariable(name: "x"
; NO-DUP-NOT: ![[GVX]] =
; NO-DUP: ![[GVY:[0-9]+]] = !DIGlobalVariable(name: "y"
; NO-DUP-NOT: ![[GVY]] =

!llvm.dbg.cu = !{!4}
!llvm.module.flags = !{!8, !9}

!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = !DIGlobalVariable(name: "x", scope: !4, file: !5, line: 1, type: !7, isLocal: false, isDefinition: true)
!2 = !DIGlobalVariableExpression(var: !3, expr: !DIExpression())
!3 = !DIGlobalVariable(name: "y", scope: !4, file: !5, line: 1, type: !7, isLocal: false, isDefinition: true)
!4 = distinct !DICompileUnit(language: DW_LANG_C, file: !5, producer: "handwritten", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !6, splitDebugInlining: false, nameTableKind: Apple, sysroot: "/")
!5 = !DIFile(filename: "cu.cpp", directory: "/tmp")
!6 = !{!0, !2}
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !{i32 7, !"Dwarf Version", i32 5}
!9 = !{i32 2, !"Debug Info Version", i32 3}