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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-06-14 00:50:34 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-06-14 00:50:34 +0000 |
| commit | 5c43f6507ecf553d86638bb5b318babcb6aaeec3 (patch) | |
| tree | f528ed25ee144d3558289d8725d28f56df5995ca /gcc/doc | |
| parent | 0837efa0d36f65b966116c0ffd2a2a351e0b83bf (diff) | |
| download | gcc-5c43f6507ecf553d86638bb5b318babcb6aaeec3.tar.gz | |
* defaults.h (TARGET_VTABLE_ENTRY_ALIGN): New.
(TARGET_VTABLE_DATA_ENTRY_DISTANCE): New.
* doc/tm.texi: Document them.
* config/ia64/ia64.h (TARGET_VTABLE_ENTRY_ALIGN): New.
(TARGET_VTABLE_DATA_ENTRY_DISTANCE): New.
(TARGET_VTABLE_USES_DESCRIPTORS): 4 word descriptors for 32-bit mode.
(ASM_OUTPUT_FDESC): Likewise.
* class.c (build_vtable): Use TARGET_VTABLE_ENTRY_ALIGN.
(build_vtbl_initializer): Honor TARGET_VTABLE_DATA_ENTRY_DISTANCE.
(build_vbase_offset_vtbl_entries): Likewise.
* rtti.c (build_headof): Likewise.
(get_tinfo_decl_dynamic): Likewise.
(create_pseudo_type_info): Likewise.
* g++.old-deja/g++.abi/vtable2.C (INC_VDATA): New. Define for
ia64 ilp32.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@54603 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/tm.texi | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 547c09a247f..cf08b12d149 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -1695,6 +1695,20 @@ pointer to which the function's data is relative. If vtables are used, the value of this macro should be the number of words that the function descriptor occupies. + +@findex TARGET_VTABLE_ENTRY_ALIGN +@item TARGET_VTABLE_ENTRY_ALIGN +By default, the vtable entries are void pointers, the so the alignment +is the same as pointer alignment. The value of this macro specifies +the alignment of the vtable entry in bits. It should be defined only +when special alignment is necessary. */ + +@findex TARGET_VTABLE_DATA_ENTRY_DISTANCE +@item TARGET_VTABLE_DATA_ENTRY_DISTANCE +There are a few non-descriptor entries in the vtable at offsets below +zero. If these entries must be padded (say, to preserve the alignment +specified by @code{TARGET_VTABLE_ENTRY_ALIGN}), set this to the number +of words in each data entry. @end table @node Escape Sequences |