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| author | Richard Stallman <rms@gnu.org> | 1992-10-01 07:55:51 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1992-10-01 07:55:51 +0000 |
| commit | 1d9d04f8cedd05e5c2a645995cb49849cdc996b0 (patch) | |
| tree | a08c585b06162a7adae73ce9d94730e5cb051c57 /gcc/explow.c | |
| parent | 09dafdadf00eb5a4dc940788316b22558e71d29a (diff) | |
| download | gcc-1d9d04f8cedd05e5c2a645995cb49849cdc996b0.zip gcc-1d9d04f8cedd05e5c2a645995cb49849cdc996b0.tar.gz gcc-1d9d04f8cedd05e5c2a645995cb49849cdc996b0.tar.bz2 | |
(allocate_dynamic_stack_space): If STACK_DYNAMIC_OFFSET or STACK_POINTER_OFFSET...
(allocate_dynamic_stack_space): If STACK_DYNAMIC_OFFSET
or STACK_POINTER_OFFSET, always round address up to BIGGEST_ALIGNMENT.
From-SVN: r2292
Diffstat (limited to 'gcc/explow.c')
| -rw-r--r-- | gcc/explow.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/explow.c b/gcc/explow.c index 211ce20..4d7d5c5 100644 --- a/gcc/explow.c +++ b/gcc/explow.c @@ -865,7 +865,11 @@ allocate_dynamic_stack_space (size, target, known_align) #ifdef MUST_ALIGN +#if !defined (STACK_DYNAMIC_OFFSET) && !defined (STACK_POINTER_OFFSET) + /* If we have to round the address up regardless of known_align, + make extra space regardless, also. */ if (known_align % BIGGEST_ALIGNMENT != 0) +#endif { if (GET_CODE (size) == CONST_INT) size = GEN_INT (INTVAL (size) @@ -875,6 +879,7 @@ allocate_dynamic_stack_space (size, target, known_align) GEN_INT (BIGGEST_ALIGNMENT / BITS_PER_UNIT - 1), NULL_RTX, 1, OPTAB_LIB_WIDEN); } + #endif #ifdef SETJMP_VIA_SAVE_AREA @@ -952,7 +957,11 @@ allocate_dynamic_stack_space (size, target, known_align) #endif #ifdef MUST_ALIGN + /* If virtual_stack_dynamic_rtx might not share the alignment of + the stack pointer register, we must always realign the stack address. */ +#if !defined (STACK_DYNAMIC_OFFSET) && !defined (STACK_POINTER_OFFSET) if (known_align % BIGGEST_ALIGNMENT != 0) +#endif { target = expand_divmod (0, CEIL_DIV_EXPR, Pmode, target, GEN_INT (BIGGEST_ALIGNMENT / BITS_PER_UNIT), |