diff options
Diffstat (limited to 'gcc/lower-subreg.c')
| -rw-r--r-- | gcc/lower-subreg.c | 62 |
1 files changed, 29 insertions, 33 deletions
diff --git a/gcc/lower-subreg.c b/gcc/lower-subreg.c index 9d5fd3be31f..d6746481f17 100644 --- a/gcc/lower-subreg.c +++ b/gcc/lower-subreg.c @@ -24,6 +24,7 @@ along with GCC; see the file COPYING3. If not see #include "coretypes.h" #include "machmode.h" #include "tm.h" +#include "bitvec.h" #include "hash-set.h" #include "vec.h" #include "double-int.h" @@ -1543,16 +1544,12 @@ decompose_multiword_subregs (bool decompose_copies) bitmap_and_compl_into (decomposable_context, non_decomposable_context); if (!bitmap_empty_p (decomposable_context)) { - sbitmap sub_blocks; - unsigned int i; - sbitmap_iterator sbi; bitmap_iterator iter; unsigned int regno; propagate_pseudo_copies (); - sub_blocks = sbitmap_alloc (last_basic_block_for_fn (cfun)); - bitmap_clear (sub_blocks); + stack_bitvec sub_blocks (last_basic_block_for_fn (cfun)); EXECUTE_IF_SET_IN_BITMAP (decomposable_context, 0, regno, iter) decompose_register (regno); @@ -1611,7 +1608,7 @@ decompose_multiword_subregs (bool decompose_copies) extract_insn (insn); if (cfi) - bitmap_set_bit (sub_blocks, bb->index); + sub_blocks[bb->index] = true; } } else @@ -1654,33 +1651,32 @@ decompose_multiword_subregs (bool decompose_copies) of a basic block, split those blocks now. Note that we only handle the case where splitting a load has caused multiple possibly trapping loads to appear. */ - EXECUTE_IF_SET_IN_BITMAP (sub_blocks, 0, i, sbi) - { - rtx_insn *insn, *end; - edge fallthru; - - bb = BASIC_BLOCK_FOR_FN (cfun, i); - insn = BB_HEAD (bb); - end = BB_END (bb); - - while (insn != end) - { - if (control_flow_insn_p (insn)) - { - /* Split the block after insn. There will be a fallthru - edge, which is OK so we keep it. We have to create the - exception edges ourselves. */ - fallthru = split_block (bb, insn); - rtl_make_eh_edge (NULL, bb, BB_END (bb)); - bb = fallthru->dest; - insn = BB_HEAD (bb); - } - else - insn = NEXT_INSN (insn); - } - } - - sbitmap_free (sub_blocks); + for (size_t i = sub_blocks.begin (); i < sub_blocks.end (); i++) + if (sub_blocks[i]) + { + rtx_insn *insn, *end; + edge fallthru; + + bb = BASIC_BLOCK_FOR_FN (cfun, i); + insn = BB_HEAD (bb); + end = BB_END (bb); + + while (insn != end) + { + if (control_flow_insn_p (insn)) + { + /* Split the block after insn. There will be a fallthru + edge, which is OK so we keep it. We have to create the + exception edges ourselves. */ + fallthru = split_block (bb, insn); + rtl_make_eh_edge (NULL, bb, BB_END (bb)); + bb = fallthru->dest; + insn = BB_HEAD (bb); + } + else + insn = NEXT_INSN (insn); + } + } } { |