diff options
| author | shinwell <shinwell@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-06-12 12:56:52 +0000 |
|---|---|---|
| committer | shinwell <shinwell@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-06-12 12:56:52 +0000 |
| commit | 1b74fde7ffa4a0a23401720de27f10b148dfbb97 (patch) | |
| tree | 0a00b7c5eddbe5d1b9ebfe19260878e50329d448 /gcc/builtins.c | |
| parent | 4266946e4489968a311f38add4dda93b0d6802c1 (diff) | |
| download | gcc-1b74fde7ffa4a0a23401720de27f10b148dfbb97.tar.gz | |
gcc/
* builtins.c (expand_builtin_return_addr): Only use
frame_pointer_rtx when count == 0 and we are expanding
__builtin_return_address.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@114567 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 603106a6751..80f2fbbf4b7 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -509,12 +509,16 @@ expand_builtin_return_addr (enum built_in_function fndecl_code, int count) #else rtx tem; - /* For a zero count, we don't care what frame address we return, so frame - pointer elimination is OK, and using the soft frame pointer is OK. - For a nonzero count, we require a stable offset from the current frame - pointer to the previous one, so we must use the hard frame pointer, and + /* For a zero count with __builtin_return_address, we don't care what + frame address we return, because target-specific definitions will + override us. Therefore frame pointer elimination is OK, and using + the soft frame pointer is OK. + + For a non-zero count, or a zero count with __builtin_frame_address, + we require a stable offset from the current frame pointer to the + previous one, so we must use the hard frame pointer, and we must disable frame pointer elimination. */ - if (count == 0) + if (count == 0 && fndecl_code == BUILT_IN_RETURN_ADDRESS) tem = frame_pointer_rtx; else { |