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| author | Manman Ren <manman.ren@gmail.com> | 2013-10-01 19:52:23 +0000 |
|---|---|---|
| committer | Manman Ren <manman.ren@gmail.com> | 2013-10-01 19:52:23 +0000 |
| commit | 620f436b205ab75e1dd48b9af8823bc30c53fd0e (patch) | |
| tree | 14f7063a4c9f6a7de435b7b16894045baeb9ffb0 /test/Linker | |
| parent | dfef7cbfc6a96d129b99750f554c7dbc000d3228 (diff) | |
| download | llvm-620f436b205ab75e1dd48b9af8823bc30c53fd0e.tar.gz llvm-620f436b205ab75e1dd48b9af8823bc30c53fd0e.tar.bz2 llvm-620f436b205ab75e1dd48b9af8823bc30c53fd0e.tar.xz | |
Debug Info: remove duplication of DIEs when a DIE is part of the type system
and it is shared across CUs.
We add a few maps in DwarfDebug to map MDNodes for the type system to the
corresponding DIEs: MDTypeNodeToDieMap, MDSPNodeToDieMap, and
MDStaticMemberNodeToDieMap. These DIEs can be shared across CUs, that is why we
keep the maps in DwarfDebug instead of CompileUnit.
Sometimes, when we try to add an attribute to a DIE, the DIE is not yet added
to its owner yet, so we don't know whether we should use ref_addr or ref4.
We create a worklist that will be processed during finalization to add
attributes with the correct form (ref_addr or ref4).
We add addDIEEntry to DwarfDebug to be a wrapper around DIE->addValue. It checks
whether we know the correct form, if not, we update the worklist
(DIEEntryWorklist).
A testing case is added to show that we only create a single DIE for a type
MDNode and we use ref_addr to refer to the type DIE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191792 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Linker')
| -rw-r--r-- | test/Linker/type-unique-simple-a.ll | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/test/Linker/type-unique-simple-a.ll b/test/Linker/type-unique-simple-a.ll index 7c2e7bfa90..251e5b3424 100644 --- a/test/Linker/type-unique-simple-a.ll +++ b/test/Linker/type-unique-simple-a.ll @@ -1,7 +1,22 @@ -; RUN: llvm-link %s %p/type-unique-simple-b.ll -S -o - | FileCheck %s +; REQUIRES: object-emission -; CHECK: DW_TAG_structure_type +; RUN: llvm-link %s %p/type-unique-simple-b.ll -S -o %t +; RUN: cat %t | FileCheck %s -check-prefix=LINK +; RUN: llc -filetype=obj -O0 < %t > %t2 +; RUN: llvm-dwarfdump -debug-dump=info %t2 | FileCheck %s +; CHECK: 0x[[INT:.*]]: DW_TAG_base_type +; CHECK-NEXT: DW_AT_name {{.*}} = "int" +; CHECK-NOT: DW_TAG_base_type +; CHECK: 0x[[BASE:.*]]: DW_TAG_structure_type +; CHECK-NEXT: DW_AT_name {{.*}} = "Base" ; CHECK-NOT: DW_TAG_structure_type +; CHECK: DW_TAG_formal_parameter +; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[INT]]) +; CHECK: DW_TAG_variable +; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[BASE]]) + +; LINK: DW_TAG_structure_type +; LINK-NOT: DW_TAG_structure_type ; Content of header files: ; struct Base { ; int a; |