diff options
Diffstat (limited to 'gcc/config/h8300/h8300.c')
| -rw-r--r-- | gcc/config/h8300/h8300.c | 68 |
1 files changed, 56 insertions, 12 deletions
diff --git a/gcc/config/h8300/h8300.c b/gcc/config/h8300/h8300.c index eac88bde469..7f49e5c1078 100644 --- a/gcc/config/h8300/h8300.c +++ b/gcc/config/h8300/h8300.c @@ -1,6 +1,6 @@ /* Subroutines for insn-output.c for Hitachi H8/300. Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, - 2001, 2002 Free Software Foundation, Inc. + 2001, 2002, 2003 Free Software Foundation, Inc. Contributed by Steve Chamberlain (sac@cygnus.com), Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com). @@ -782,7 +782,9 @@ general_operand_src (op, mode) rtx op; enum machine_mode mode; { - if (GET_CODE (op) == MEM && GET_CODE (XEXP (op, 0)) == POST_INC) + if (GET_MODE (op) == mode + && GET_CODE (op) == MEM + && GET_CODE (XEXP (op, 0)) == POST_INC) return 1; return general_operand (op, mode); } @@ -795,7 +797,9 @@ general_operand_dst (op, mode) rtx op; enum machine_mode mode; { - if (GET_CODE (op) == MEM && GET_CODE (XEXP (op, 0)) == PRE_DEC) + if (GET_MODE (op) == mode + && GET_CODE (op) == MEM + && GET_CODE (XEXP (op, 0)) == PRE_DEC) return 1; return general_operand (op, mode); } @@ -1700,9 +1704,11 @@ h8300_initial_elimination_offset (from, to) int from, to; { int offset = 0; + /* The number of bytes that the return address takes on the stack. */ + int pc_size = POINTER_SIZE / BITS_PER_UNIT; if (from == ARG_POINTER_REGNUM && to == FRAME_POINTER_REGNUM) - offset = UNITS_PER_WORD + frame_pointer_needed * UNITS_PER_WORD; + offset = pc_size + frame_pointer_needed * UNITS_PER_WORD; else if (from == RETURN_ADDRESS_POINTER_REGNUM && to == FRAME_POINTER_REGNUM) offset = frame_pointer_needed * UNITS_PER_WORD; else @@ -1719,12 +1725,10 @@ h8300_initial_elimination_offset (from, to) offset += round_frame_size (get_frame_size ()); if (from == ARG_POINTER_REGNUM && to == STACK_POINTER_REGNUM) - offset += UNITS_PER_WORD; /* Skip saved PC */ + /* Skip saved PC. */ + offset += pc_size; } - if ((TARGET_H8300H || TARGET_H8300S) && TARGET_NORMAL_MODE) - offset -= 2; - return offset; } @@ -1755,6 +1759,8 @@ notice_update_cc (body, insn) rtx body; rtx insn; { + rtx set; + switch (get_attr_cc (insn)) { case CC_NONE: @@ -1777,7 +1783,10 @@ notice_update_cc (body, insn) that's ok because alter_cond will change tests to use EQ/NE. */ CC_STATUS_INIT; cc_status.flags |= CC_OVERFLOW_UNUSABLE | CC_NO_CARRY; - cc_status.value1 = recog_data.operand[0]; + set = single_set (insn); + cc_status.value1 = SET_SRC (set); + if (SET_DEST (set) != cc0_rtx) + cc_status.value2 = SET_DEST (set); break; case CC_SET_ZNV: @@ -1786,9 +1795,10 @@ notice_update_cc (body, insn) alter_cond will change tests to use EQ/NE. */ CC_STATUS_INIT; cc_status.flags |= CC_NO_CARRY; - cc_status.value1 = recog_data.operand[0]; - if (GET_CODE (body) == SET && REG_P (SET_SRC (body))) - cc_status.value2 = SET_SRC (body); + set = single_set (insn); + cc_status.value1 = SET_SRC (set); + if (SET_DEST (set) != cc0_rtx) + cc_status.value2 = SET_DEST (set); break; case CC_COMPARE: @@ -1804,6 +1814,40 @@ notice_update_cc (body, insn) } } +/* Return nonzero if X is a stack pointer. */ + +int +stack_pointer_operand (x, mode) + rtx x; + enum machine_mode mode ATTRIBUTE_UNUSED; +{ + return x == stack_pointer_rtx; +} + +/* Return nonzero if X is a constant whose absolute value is greater + than 2. */ + +int +const_int_gt_2_operand (x, mode) + rtx x; + enum machine_mode mode ATTRIBUTE_UNUSED; +{ + return (GET_CODE (x) == CONST_INT + && abs (INTVAL (x)) > 2); +} + +/* Return nonzero if X is a constant whose absolute value is no + smaller than 8. */ + +int +const_int_ge_8_operand (x, mode) + rtx x; + enum machine_mode mode ATTRIBUTE_UNUSED; +{ + return (GET_CODE (x) == CONST_INT + && abs (INTVAL (x)) >= 8); +} + /* Recognize valid operators for bit instructions. */ int |