diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/loop.c | 11 |
2 files changed, 12 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 91162d5..a6f3f68 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2001-06-12 Jim Wilson <wilson@redhat.com> + + * loop.c (strength_reduce): Move bl->all_reduced set before + check_ext_dependant_givs call. + (check_ext_dependant_givs): Clear bl->all_reduced when ignoring givs. + 2001-06-12 Alexandre Oliva <aoliva@redhat.com> * doc/extend.texi (Function Attributes): Document SH's sp_switch @@ -4306,6 +4306,11 @@ strength_reduce (loop, flags) provided all givs are reduced. */ bl->eliminable = loop_biv_eliminable_p (loop, bl, threshold, insn_count); + /* This will be true at the end, if all givs which depend on this + biv have been strength reduced. + We can't (currently) eliminate the biv unless this is so. */ + bl->all_reduced = 1; + /* Check each extension dependent giv in this class to see if its root biv is safe from wrapping in the interior mode. */ check_ext_dependant_givs (bl, loop_info); @@ -4313,11 +4318,6 @@ strength_reduce (loop, flags) /* Combine all giv's for this iv_class. */ combine_givs (regs, bl); - /* This will be true at the end, if all givs which depend on this - biv have been strength reduced. - We can't (currently) eliminate the biv unless this is so. */ - bl->all_reduced = 1; - for (v = bl->giv; v; v = v->next_iv) { struct induction *tv; @@ -6660,6 +6660,7 @@ check_ext_dependant_givs (bl, loop_info) INSN_UID (v->insn), why); } v->ignore = 1; + bl->all_reduced = 0; } } } |