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| author | Jakub Jelinek <jakub@redhat.com> | 2012-10-16 13:21:20 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-10-16 13:21:20 +0200 |
| commit | 0fe03ac31859b5cdc6760e605dc17ffbccfe1860 (patch) | |
| tree | 9ba40d70d5d1df4a70c9881287bb8ea4ea5c49b6 /gcc/alias.c | |
| parent | cded4e9ed7d9f793d31303def53d999890a0f5a5 (diff) | |
| download | gcc-0fe03ac31859b5cdc6760e605dc17ffbccfe1860.zip gcc-0fe03ac31859b5cdc6760e605dc17ffbccfe1860.tar.gz gcc-0fe03ac31859b5cdc6760e605dc17ffbccfe1860.tar.bz2 | |
re PR debug/54796 (Non-addressable stack parameter debug quality regression)
PR debug/54796
* rtl.h: Document jump flag on VALUE.
* cselib.h (cselib_set_value_sp_based,
cselib_sp_based_value_p): New prototypes.
* alias.c (find_base_term): For cselib_sp_based_value_p
return static_reg_base_value[STACK_POINTER_REGNUM].
* cselib.c (SP_BASED_VALUE_P): Define.
(cselib_set_value_sp_based, cselib_sp_based_value_p): New functions.
* var-tracking.c (add_stores): Call cselib_set_value_sp_based
for not yet preserved VALUEs of sp on sp assignments if
hard_frame_pointer_adjustment != -1.
(vt_initialize): When setting hard_frame_pointer_adjustment,
disassociate sp from its previous value and call
cselib_set_value_sp_based on a new VALUE created for sp.
* gcc.dg/guality/pr54796.c: New test.
From-SVN: r192494
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 09aef11..244ca52 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -1640,6 +1640,9 @@ find_base_term (rtx x) if (!val) return ret; + if (cselib_sp_based_value_p (val)) + return static_reg_base_value[STACK_POINTER_REGNUM]; + f = val->locs; /* Temporarily reset val->locs to avoid infinite recursion. */ val->locs = NULL; |