diff options
author | dberlin <dberlin@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-05-08 18:48:04 +0000 |
---|---|---|
committer | dberlin <dberlin@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-05-08 18:48:04 +0000 |
commit | 554906860bd71e349772b755c76998cfd6c4596e (patch) | |
tree | eecc672ac3b50f106c4d4a513aee6d74d6512302 | |
parent | fb5320b0e234551585704326210febcb0bb3c3a4 (diff) |
Revert merge mistake
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/dataflow-branch@124552 138bc75d-0d04-0410-961f-82ee72b054a4
-rw-r--r-- | gcc/regclass.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index 9b79aa3c22b..c01186b22a6 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -1100,70 +1100,6 @@ scan_one_insn (rtx insn, int pass ATTRIBUTE_UNUSED) return insn; } - /* Improve handling of two-address insns such as - (set X (ashift CONST Y)) where CONST must be made to - match X. Change it into two insns: (set X CONST) - (set X (ashift X Y)). If we left this for reloading, it - would probably get three insns because X and Y might go - in the same place. This prevents X and Y from receiving - the same hard reg. - - We can only do this if the modes of operands 0 and 1 - (which might not be the same) are tieable and we only need - do this during our first pass. */ - - if (pass == 0 && optimize - && recog_data.n_operands >= 3 - && recog_data.constraints[1][0] == '0' - && recog_data.constraints[1][1] == 0 - && CONSTANT_P (recog_data.operand[1]) - && ! rtx_equal_p (recog_data.operand[0], recog_data.operand[1]) - && ! rtx_equal_p (recog_data.operand[0], recog_data.operand[2]) - && REG_P (recog_data.operand[0]) - && MODES_TIEABLE_P (GET_MODE (recog_data.operand[0]), - recog_data.operand_mode[1])) - { - rtx previnsn = prev_real_insn (insn); - rtx dest - = gen_lowpart (recog_data.operand_mode[1], - recog_data.operand[0]); - rtx newinsn - = emit_insn_before (gen_move_insn (dest, recog_data.operand[1]), insn); - - /* If this insn was the start of a basic block, - include the new insn in that block. - We need not check for code_label here; - while a basic block can start with a code_label, - INSN could not be at the beginning of that block. */ - if (previnsn == 0 || JUMP_P (previnsn)) - { - basic_block b; - FOR_EACH_BB (b) - if (insn == BB_HEAD (b)) - BB_HEAD (b) = newinsn; - } - - /* This makes one more setting of new insns's dest. */ - INC_REG_N_SETS (REGNO (recog_data.operand[0]), 1); - INC_REG_N_REFS (REGNO (recog_data.operand[0]), 1); - REG_FREQ (REGNO (recog_data.operand[0])) += frequency; - - *recog_data.operand_loc[1] = recog_data.operand[0]; - INC_REG_N_REFS (REGNO (recog_data.operand[0]), 1); - REG_FREQ (REGNO (recog_data.operand[0])) += frequency; - for (i = recog_data.n_dups - 1; i >= 0; i--) - if (recog_data.dup_num[i] == 1) - { - *recog_data.dup_loc[i] = recog_data.operand[0]; - INC_REG_N_REFS (REGNO (recog_data.operand[0]), 1); - REG_FREQ (REGNO (recog_data.operand[0])) += frequency; - } - - df_insn_rescan (insn); - - return PREV_INSN (newinsn); - } - record_operand_costs (insn, op_costs, reg_pref); /* Now add the cost for each operand to the total costs for |