diff options
| author | dj <dj@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-05-13 18:15:20 +0000 |
|---|---|---|
| committer | dj <dj@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-05-13 18:15:20 +0000 |
| commit | b4ad0ea6f8b0de6d496a6dd304503cd7d9ceac46 (patch) | |
| tree | 8f77d371215dca9f9a7b23006f61ba59789b83bf /gcc/expr.c | |
| parent | d07c9932fe3d8be3478554d156bf3bf189027339 (diff) | |
| download | gcc-b4ad0ea6f8b0de6d496a6dd304503cd7d9ceac46.tar.gz | |
* expr.c (move_by_pieces): Honor the alignment of TO and FROM.
(emit_push_insn): Don't use push when the source alignment is less
than the stack's push rounding.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@66770 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/expr.c b/gcc/expr.c index 07d4b14e25d..9c21ac9a3a7 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -1463,7 +1463,7 @@ convert_modes (mode, oldmode, x, unsignedp) If PUSH_ROUNDING is defined and TO is NULL, emit_single_push_insn is used to push FROM to the stack. - ALIGN is maximum alignment we can assume. */ + ALIGN is maximum stack alignment we can assume. */ void move_by_pieces (to, from, len, align) @@ -1477,6 +1477,8 @@ move_by_pieces (to, from, len, align) enum machine_mode mode = VOIDmode, tmode; enum insn_code icode; + align = MIN (to ? MEM_ALIGN (to) : align, MEM_ALIGN (from)); + data.offset = 0; data.from_addr = from_addr; if (to) @@ -3849,6 +3851,7 @@ emit_push_insn (x, mode, type, size, align, partial, reg, extra, && PUSH_ARGS && GET_CODE (size) == CONST_INT && skip == 0 + && MEM_ALIGN (xinner) >= align && (MOVE_BY_PIECES_P ((unsigned) INTVAL (size) - used, align)) /* Here we avoid the case of a structure whose weak alignment forces many pushes of a small amount of data, |