diff options
| -rw-r--r-- | llvm/docs/LangRef.rst | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst index 9168648db6e..044d21c991e 100644 --- a/llvm/docs/LangRef.rst +++ b/llvm/docs/LangRef.rst @@ -4511,13 +4511,36 @@ DIGlobalVariable .. code-block:: text - !0 = !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !1, - file: !2, line: 7, type: !3, isLocal: true, - isDefinition: false, variable: i32* @foo, - declaration: !4) + @foo = global i32, !dbg !0 + !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) + !1 = !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !2, + file: !3, line: 7, type: !4, isLocal: true, + isDefinition: false, declaration: !5) -All global variables should be referenced by the `globals:` field of a -:ref:`compile unit <DICompileUnit>`. + +DIGlobalVariableExpression +"""""""""""""""""""""""""" + +``DIGlobalVariableExpression`` nodes tie a :ref:`DIGlobalVariable` together +with a :ref:`DIExpression`. + +.. code-block:: text + + @lower = global i32, !dbg !0 + @upper = global i32, !dbg !1 + !0 = !DIGlobalVariableExpression( + var: !2, + expr: !DIExpression(DW_OP_LLVM_fragment, 0, 32) + ) + !1 = !DIGlobalVariableExpression( + var: !2, + expr: !DIExpression(DW_OP_LLVM_fragment, 32, 32) + ) + !2 = !DIGlobalVariable(name: "split64", linkageName: "split64", scope: !3, + file: !4, line: 8, type: !5, declaration: !6) + +All global variable expressions should be referenced by the `globals:` field of +a :ref:`compile unit <DICompileUnit>`. .. _DISubprogram: |
