re PR rtl-optimization/51495 (ICE: in force_nonfallthru_and_redirect, at cfgrtl.c:1171 with computed goto)
PR rtl-optimization/51495 * function.c (thread_prologue_and_epilogue_insns): Don't add to bb_tail basic blocks that have EDGE_COMPLEX predecessor edges from basic blocks not needing prologue. * gcc.c-torture/compile/pr51495.c: New test. From-SVN: r182265
This commit is contained in:
parent
c88388e674
commit
6e456f4cf4
@ -1,5 +1,10 @@
|
|||||||
2011-12-12 Jakub Jelinek <jakub@redhat.com>
|
2011-12-12 Jakub Jelinek <jakub@redhat.com>
|
||||||
|
|
||||||
|
PR rtl-optimization/51495
|
||||||
|
* function.c (thread_prologue_and_epilogue_insns): Don't add
|
||||||
|
to bb_tail basic blocks that have EDGE_COMPLEX predecessor edges
|
||||||
|
from basic blocks not needing prologue.
|
||||||
|
|
||||||
PR tree-optimization/51481
|
PR tree-optimization/51481
|
||||||
* gimple-fold.c (gimple_fold_call): Call
|
* gimple-fold.c (gimple_fold_call): Call
|
||||||
maybe_clean_or_replace_eh_stmt. Avoid optimization if stmt has EH
|
maybe_clean_or_replace_eh_stmt. Avoid optimization if stmt has EH
|
||||||
|
@ -5956,9 +5956,22 @@ thread_prologue_and_epilogue_insns (void)
|
|||||||
FOR_EACH_EDGE (e, ei, tmp_bb->preds)
|
FOR_EACH_EDGE (e, ei, tmp_bb->preds)
|
||||||
if (single_succ_p (e->src)
|
if (single_succ_p (e->src)
|
||||||
&& !bitmap_bit_p (&bb_on_list, e->src->index)
|
&& !bitmap_bit_p (&bb_on_list, e->src->index)
|
||||||
&& can_duplicate_block_p (e->src)
|
&& can_duplicate_block_p (e->src))
|
||||||
&& bitmap_set_bit (&bb_tail, e->src->index))
|
{
|
||||||
VEC_quick_push (basic_block, vec, e->src);
|
edge pe;
|
||||||
|
edge_iterator pei;
|
||||||
|
|
||||||
|
/* If there is predecessor of e->src which doesn't
|
||||||
|
need prologue and the edge is complex,
|
||||||
|
we might not be able to redirect the branch
|
||||||
|
to a copy of e->src. */
|
||||||
|
FOR_EACH_EDGE (pe, pei, e->src->preds)
|
||||||
|
if ((pe->flags & EDGE_COMPLEX) != 0
|
||||||
|
&& !bitmap_bit_p (&bb_flags, pe->src->index))
|
||||||
|
break;
|
||||||
|
if (pe == NULL && bitmap_set_bit (&bb_tail, e->src->index))
|
||||||
|
VEC_quick_push (basic_block, vec, e->src);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Now walk backwards from every block that is marked as needing
|
/* Now walk backwards from every block that is marked as needing
|
||||||
|
@ -1,5 +1,8 @@
|
|||||||
2011-12-12 Jakub Jelinek <jakub@redhat.com>
|
2011-12-12 Jakub Jelinek <jakub@redhat.com>
|
||||||
|
|
||||||
|
PR rtl-optimization/51495
|
||||||
|
* gcc.c-torture/compile/pr51495.c: New test.
|
||||||
|
|
||||||
PR tree-optimization/51481
|
PR tree-optimization/51481
|
||||||
* gcc.dg/pr51481.c: New test.
|
* gcc.dg/pr51481.c: New test.
|
||||||
|
|
||||||
|
14
gcc/testsuite/gcc.c-torture/compile/pr51495.c
Normal file
14
gcc/testsuite/gcc.c-torture/compile/pr51495.c
Normal file
@ -0,0 +1,14 @@
|
|||||||
|
/* PR rtl-optimization/51495 */
|
||||||
|
|
||||||
|
void bar (void);
|
||||||
|
|
||||||
|
int
|
||||||
|
foo (int i)
|
||||||
|
{
|
||||||
|
static const void *const table[] = { &&begin, &&end };
|
||||||
|
goto *(table[i]);
|
||||||
|
begin:
|
||||||
|
bar ();
|
||||||
|
end:
|
||||||
|
return 0;
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user