diff options
Diffstat (limited to 'gcc/cfgbuild.c')
| -rw-r--r-- | gcc/cfgbuild.c | 62 |
1 files changed, 1 insertions, 61 deletions
diff --git a/gcc/cfgbuild.c b/gcc/cfgbuild.c index e184479..0cef94e 100644 --- a/gcc/cfgbuild.c +++ b/gcc/cfgbuild.c @@ -50,7 +50,6 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA static int count_basic_blocks (rtx); static void find_basic_blocks_1 (rtx); -static rtx find_label_refs (rtx, rtx); static void make_edges (rtx, basic_block, basic_block, int); static void make_label_edge (sbitmap *, basic_block, rtx, int); static void find_bb_boundaries (basic_block); @@ -175,51 +174,6 @@ count_basic_blocks (rtx f) return count; } - -/* Scan a list of insns for labels referred to other than by jumps. - This is used to scan the alternatives of a call placeholder. */ - -static rtx -find_label_refs (rtx f, rtx lvl) -{ - rtx insn; - - for (insn = f; insn; insn = NEXT_INSN (insn)) - if (INSN_P (insn) && GET_CODE (insn) != JUMP_INSN) - { - rtx note; - - /* Make a list of all labels referred to other than by jumps - (which just don't have the REG_LABEL notes). - - Make a special exception for labels followed by an ADDR*VEC, - as this would be a part of the tablejump setup code. - - Make a special exception to registers loaded with label - values just before jump insns that use them. */ - - for (note = REG_NOTES (insn); note; note = XEXP (note, 1)) - if (REG_NOTE_KIND (note) == REG_LABEL) - { - rtx lab = XEXP (note, 0), next; - - if ((next = next_nonnote_insn (lab)) != NULL - && GET_CODE (next) == JUMP_INSN - && (GET_CODE (PATTERN (next)) == ADDR_VEC - || GET_CODE (PATTERN (next)) == ADDR_DIFF_VEC)) - ; - else if (GET_CODE (lab) == NOTE) - ; - else if (GET_CODE (NEXT_INSN (insn)) == JUMP_INSN - && find_reg_note (NEXT_INSN (insn), REG_LABEL, lab)) - ; - else - lvl = alloc_EXPR_LIST (0, XEXP (note, 0), lvl); - } - } - - return lvl; -} /* Create an edge between two basic blocks. FLAGS are auxiliary information about the edge that is accumulated between calls. */ @@ -464,7 +418,6 @@ find_basic_blocks_1 (rtx f) rtx insn, next; rtx bb_note = NULL_RTX; rtx lvl = NULL_RTX; - rtx trll = NULL_RTX; rtx head = NULL_RTX; rtx end = NULL_RTX; basic_block prev = ENTRY_BLOCK_PTR; @@ -525,23 +478,11 @@ find_basic_blocks_1 (rtx f) case CODE_LABEL: case JUMP_INSN: + case CALL_INSN: case INSN: case BARRIER: break; - case CALL_INSN: - if (GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER) - { - /* Scan each of the alternatives for label refs. */ - lvl = find_label_refs (XEXP (PATTERN (insn), 0), lvl); - lvl = find_label_refs (XEXP (PATTERN (insn), 1), lvl); - lvl = find_label_refs (XEXP (PATTERN (insn), 2), lvl); - /* Record its tail recursion label, if any. */ - if (XEXP (PATTERN (insn), 3) != NULL_RTX) - trll = alloc_EXPR_LIST (0, XEXP (PATTERN (insn), 3), trll); - } - break; - default: abort (); } @@ -588,7 +529,6 @@ find_basic_blocks_1 (rtx f) abort (); label_value_list = lvl; - tail_recursion_label_list = trll; clear_aux_for_blocks (); } |