diff options
| author | Richard Henderson <rth@cygnus.com> | 2000-05-06 14:35:35 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-05-06 14:35:35 -0700 |
| commit | 6482ee510f4125bfbe7b96257c3293b2f437cf39 (patch) | |
| tree | 92b49b469ece186c45c43c6ebeeef1b06398a7d8 | |
| parent | e117276e049f1b0f213cfd524eaf261e6d1dc8a8 (diff) | |
| download | gcc-6482ee510f4125bfbe7b96257c3293b2f437cf39.zip gcc-6482ee510f4125bfbe7b96257c3293b2f437cf39.tar.gz gcc-6482ee510f4125bfbe7b96257c3293b2f437cf39.tar.bz2 | |
flow.c (split_edge): Don't allocate global_live_at_start for the new block unless...
* flow.c (split_edge): Don't allocate global_live_at_start for
the new block unless the old blocks had them as well.
From-SVN: r33735
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/flow.c | 9 |
2 files changed, 7 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 06f2531..ad5ebc5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2000-05-06 Richard Henderson <rth@cygnus.com> + + * flow.c (split_edge): Don't allocate global_live_at_start for + the new block unless the old blocks had them as well. + 2000-05-06 Zack Weinberg <zack@wolery.cumb.org> * cpphash.h: Remove conditional #define of __extension__. @@ -1349,20 +1349,15 @@ split_edge (edge_in) n_edges++; memset (bb, 0, sizeof (*bb)); - bb->global_live_at_start = OBSTACK_ALLOC_REG_SET (function_obstack); - bb->global_live_at_end = OBSTACK_ALLOC_REG_SET (function_obstack); /* ??? This info is likely going to be out of date very soon. */ if (old_succ->global_live_at_start) { + bb->global_live_at_start = OBSTACK_ALLOC_REG_SET (function_obstack); + bb->global_live_at_end = OBSTACK_ALLOC_REG_SET (function_obstack); COPY_REG_SET (bb->global_live_at_start, old_succ->global_live_at_start); COPY_REG_SET (bb->global_live_at_end, old_succ->global_live_at_start); } - else - { - CLEAR_REG_SET (bb->global_live_at_start); - CLEAR_REG_SET (bb->global_live_at_end); - } /* Wire them up. */ bb->pred = edge_in; |