diff options
Diffstat (limited to 'gcc/tree-flow.h')
| -rw-r--r-- | gcc/tree-flow.h | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h index 794047bc7f0..315d9558d14 100644 --- a/gcc/tree-flow.h +++ b/gcc/tree-flow.h @@ -136,12 +136,17 @@ struct GTY(()) ptr_info_def align and misalign specify low known bits of the pointer. ptr & (align - 1) == misalign. */ - /* The power-of-two byte alignment of the object this pointer - points into. This is usually DECL_ALIGN_UNIT for decls and - MALLOC_ABI_ALIGNMENT for allocated storage. */ + /* When known, this is the power-of-two byte alignment of the object this + pointer points into. This is usually DECL_ALIGN_UNIT for decls and + MALLOC_ABI_ALIGNMENT for allocated storage. When the alignment is not + known, it is zero. Do not access directly but use functions + get_ptr_info_alignment, set_ptr_info_alignment, + mark_ptr_info_alignment_unknown and similar. */ unsigned int align; - /* The byte offset this pointer differs from the above alignment. */ + /* When alignment is known, the byte offset this pointer differs from the + above alignment. Access only through the same helper functions as align + above. */ unsigned int misalign; }; @@ -593,6 +598,13 @@ extern void duplicate_ssa_name_ptr_info (tree, struct ptr_info_def *); extern void release_ssa_name (tree); extern void release_defs (gimple); extern void replace_ssa_name_symbol (tree, tree); +extern bool get_ptr_info_alignment (struct ptr_info_def *, unsigned int *, + unsigned int *); +extern void mark_ptr_info_alignment_unknown (struct ptr_info_def *); +extern void set_ptr_info_alignment (struct ptr_info_def *, unsigned int, + unsigned int); +extern void adjust_ptr_info_misalignment (struct ptr_info_def *, + unsigned int); #ifdef GATHER_STATISTICS extern void ssanames_print_statistics (void); |