diff options
Diffstat (limited to 'gcc/lra.c')
| -rw-r--r-- | gcc/lra.c | 53 |
1 files changed, 16 insertions, 37 deletions
@@ -540,13 +540,12 @@ object_allocator<lra_insn_reg> lra_insn_reg_pool ("insn regs"); is reference through subreg (SUBREG_P), and reference to the next insn reg info (NEXT). If REGNO can be early clobbered, alternatives in which it can be early clobbered are given by - EARLY_CLOBBER_ALTS. CLOBBER_HIGH marks if reference is a clobber - high. */ + EARLY_CLOBBER_ALTS. */ static struct lra_insn_reg * new_insn_reg (rtx_insn *insn, int regno, enum op_type type, machine_mode mode, bool subreg_p, alternative_mask early_clobber_alts, - struct lra_insn_reg *next, bool clobber_high) + struct lra_insn_reg *next) { lra_insn_reg *ir = lra_insn_reg_pool.allocate (); ir->type = type; @@ -556,7 +555,6 @@ new_insn_reg (rtx_insn *insn, int regno, enum op_type type, lra_reg_info[regno].biggest_mode = mode; ir->subreg_p = subreg_p; ir->early_clobber_alts = early_clobber_alts; - ir->clobber_high = clobber_high; ir->regno = regno; ir->next = next; return ir; @@ -824,13 +822,12 @@ setup_operand_alternative (lra_insn_recog_data_t data, not the insn operands, in X with TYPE (in/out/inout) and flag that it is early clobbered in the insn (EARLY_CLOBBER) and add the info to LIST. X is a part of insn given by DATA. Return the result - list. CLOBBER_HIGH marks if X is a clobber high. */ + list. */ static struct lra_insn_reg * collect_non_operand_hard_regs (rtx_insn *insn, rtx *x, lra_insn_recog_data_t data, struct lra_insn_reg *list, - enum op_type type, bool early_clobber, - bool clobber_high) + enum op_type type, bool early_clobber) { int i, j, regno, last; bool subreg_p; @@ -890,8 +887,7 @@ collect_non_operand_hard_regs (rtx_insn *insn, rtx *x, && regno <= LAST_STACK_REG)); #endif list = new_insn_reg (data->insn, regno, type, mode, subreg_p, - early_clobber ? ALL_ALTERNATIVES : 0, list, - clobber_high); + early_clobber ? ALL_ALTERNATIVES : 0, list); } } return list; @@ -900,31 +896,24 @@ collect_non_operand_hard_regs (rtx_insn *insn, rtx *x, { case SET: list = collect_non_operand_hard_regs (insn, &SET_DEST (op), data, - list, OP_OUT, false, false); + list, OP_OUT, false); list = collect_non_operand_hard_regs (insn, &SET_SRC (op), data, - list, OP_IN, false, false); + list, OP_IN, false); break; case CLOBBER: /* We treat clobber of non-operand hard registers as early clobber. */ list = collect_non_operand_hard_regs (insn, &XEXP (op, 0), data, - list, OP_OUT, true, false); - break; - case CLOBBER_HIGH: - /* Clobber high should always span exactly one register. */ - gcc_assert (REG_NREGS (XEXP (op, 0)) == 1); - /* We treat clobber of non-operand hard registers as early clobber. */ - list = collect_non_operand_hard_regs (insn, &XEXP (op, 0), data, - list, OP_OUT, true, true); + list, OP_OUT, true); break; case PRE_INC: case PRE_DEC: case POST_INC: case POST_DEC: list = collect_non_operand_hard_regs (insn, &XEXP (op, 0), data, - list, OP_INOUT, false, false); + list, OP_INOUT, false); break; case PRE_MODIFY: case POST_MODIFY: list = collect_non_operand_hard_regs (insn, &XEXP (op, 0), data, - list, OP_INOUT, false, false); + list, OP_INOUT, false); list = collect_non_operand_hard_regs (insn, &XEXP (op, 1), data, - list, OP_IN, false, false); + list, OP_IN, false); break; default: fmt = GET_RTX_FORMAT (code); @@ -932,12 +921,11 @@ collect_non_operand_hard_regs (rtx_insn *insn, rtx *x, { if (fmt[i] == 'e') list = collect_non_operand_hard_regs (insn, &XEXP (op, i), data, - list, OP_IN, false, false); + list, OP_IN, false); else if (fmt[i] == 'E') for (j = XVECLEN (op, i) - 1; j >= 0; j--) list = collect_non_operand_hard_regs (insn, &XVECEXP (op, i, j), - data, list, OP_IN, false, - false); + data, list, OP_IN, false); } } return list; @@ -1086,7 +1074,7 @@ lra_set_insn_recog_data (rtx_insn *insn) else insn_static_data->hard_regs = collect_non_operand_hard_regs (insn, &PATTERN (insn), data, - NULL, OP_IN, false, false); + NULL, OP_IN, false); data->arg_hard_regs = NULL; if (CALL_P (insn)) { @@ -1112,10 +1100,6 @@ lra_set_insn_recog_data (rtx_insn *insn) arg_hard_regs[n_hard_regs++] = regno + i + (use_p ? 0 : FIRST_PSEUDO_REGISTER); } - else if (GET_CODE (XEXP (link, 0)) == CLOBBER_HIGH) - /* We could support CLOBBER_HIGH and treat it in the same way as - HARD_REGNO_CALL_PART_CLOBBERED, but no port needs that yet. */ - gcc_unreachable (); if (n_hard_regs != 0) { @@ -1475,7 +1459,7 @@ add_regs_to_insn_regno_info (lra_insn_recog_data_t data, rtx x, if (bitmap_set_bit (&lra_reg_info[regno].insn_bitmap, INSN_UID (insn))) { data->regs = new_insn_reg (data->insn, regno, type, mode, subreg_p, - early_clobber_alts, data->regs, false); + early_clobber_alts, data->regs); return; } else @@ -1488,7 +1472,7 @@ add_regs_to_insn_regno_info (lra_insn_recog_data_t data, rtx x, structure. */ data->regs = new_insn_reg (data->insn, regno, type, mode, subreg_p, early_clobber_alts, - data->regs, false); + data->regs); else { if (curr->type != type) @@ -1513,8 +1497,6 @@ add_regs_to_insn_regno_info (lra_insn_recog_data_t data, rtx x, add_regs_to_insn_regno_info (data, XEXP (x, 0), insn, OP_OUT, ALL_ALTERNATIVES); break; - case CLOBBER_HIGH: - gcc_unreachable (); case PRE_INC: case PRE_DEC: case POST_INC: case POST_DEC: add_regs_to_insn_regno_info (data, XEXP (x, 0), insn, OP_INOUT, 0); break; @@ -1650,9 +1632,6 @@ lra_update_insn_regno_info (rtx_insn *insn) link = XEXP (link, 1)) { code = GET_CODE (XEXP (link, 0)); - /* We could support CLOBBER_HIGH and treat it in the same way as - HARD_REGNO_CALL_PART_CLOBBERED, but no port needs that yet. */ - gcc_assert (code != CLOBBER_HIGH); if ((code == USE || code == CLOBBER) && MEM_P (XEXP (XEXP (link, 0), 0))) add_regs_to_insn_regno_info (data, XEXP (XEXP (link, 0), 0), insn, |