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| author | Eric Botcazou <ebotcazou@adacore.com> | 2012-12-04 09:05:49 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2012-12-04 09:05:49 +0000 |
| commit | 44bd7f65250cd0814b346679ef801ae0722e0483 (patch) | |
| tree | 817ce919e43053dca36bf49e122166abae711f60 /gcc/config | |
| parent | 8c4d267c6e834ccc20632d2c9077d7622b8145cf (diff) | |
| download | gcc-44bd7f65250cd0814b346679ef801ae0722e0483.zip gcc-44bd7f65250cd0814b346679ef801ae0722e0483.tar.gz gcc-44bd7f65250cd0814b346679ef801ae0722e0483.tar.bz2 | |
ia64.c (ia64_compute_frame_size): Allocate the scratch area if the function allocates dynamic stack space.
* config/ia64/ia64.c (ia64_compute_frame_size): Allocate the scratch
area if the function allocates dynamic stack space.
(ia64_initial_elimination_offset): Adjust offsets to above change.
From-SVN: r194121
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/ia64/ia64.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c index 9a7528f..3b19b98 100644 --- a/gcc/config/ia64/ia64.c +++ b/gcc/config/ia64/ia64.c @@ -2885,8 +2885,10 @@ ia64_compute_frame_size (HOST_WIDE_INT size) /* We always use the 16-byte scratch area provided by the caller, but if we are a leaf function, there's no one to which we need to provide - a scratch area. */ - if (crtl->is_leaf) + a scratch area. However, if the function allocates dynamic stack space, + the dynamic offset is computed early and contains STACK_POINTER_OFFSET, + so we need to cope. */ + if (crtl->is_leaf && !cfun->calls_alloca) total_size = MAX (0, total_size - 16); current_frame_info.total_size = total_size; @@ -2920,18 +2922,15 @@ ia64_initial_elimination_offset (int from, int to) switch (to) { case HARD_FRAME_POINTER_REGNUM: - if (crtl->is_leaf) - offset = -current_frame_info.total_size; - else - offset = -(current_frame_info.total_size - - crtl->outgoing_args_size - 16); + offset = -current_frame_info.total_size; + if (!crtl->is_leaf || cfun->calls_alloca) + offset += 16 + crtl->outgoing_args_size; break; case STACK_POINTER_REGNUM: - if (crtl->is_leaf) - offset = 0; - else - offset = 16 + crtl->outgoing_args_size; + offset = 0; + if (!crtl->is_leaf || cfun->calls_alloca) + offset += 16 + crtl->outgoing_args_size; break; default: |