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sh.md (symGOT_load, [...]): New expands.

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* config/sh/sh.md (symGOT_load, sym2GOT, sym2GOTOFF): New expands.
(symGOT2reg): Use them, then set as GOT value as unchanging.
(symGOTOFF2reg): Set REG_EQUAL note.  Use a different pseudo
as a temporary, if possible.
(symPLT_label2reg): Enclose (pc) in UNSPEC_PIC.  Emit
sym@PLT-(.LPCS#+2-.) instead of sym@PLT+.-(.LPCS#+2).

From-SVN: r49170
This commit is contained in:
Alexandre Oliva 2002-01-24 06:16:58 +00:00 • committed by Alexandre Oliva
parent f7b54dea72
commit e1d7127573
2 changed files with 82 additions and 18 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2002-01-24 Alexandre Oliva <aoliva@redhat.com>
* config/sh/sh.md (symGOT_load, sym2GOT, sym2GOTOFF): New expands.
(symGOT2reg): Use them, then set as GOT value as unchanging.
(symGOTOFF2reg): Set REG_EQUAL note. Use a different pseudo
as a temporary, if possible.
(symPLT_label2reg): Enclose (pc) in UNSPEC_PIC. Emit
sym@PLT-(.LPCS#+2-.) instead of sym@PLT+.-(.LPCS#+2).
2002-01-23 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.md: Fix xorqi and xorqi so that they will

91
gcc/config/sh/sh.md
View file

@ -3791,36 +3791,91 @@
(const_int 2))))))]
"" "")
(define_expand "symGOT2reg"
[(set (match_operand:SI 0 "" "")
(const:SI (unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_GOT)))
(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))
(set (match_dup 0) (mem:SI (match_dup 0)))]
(define_expand "symGOT_load"
[(set (match_dup 2) (match_operand 1 "" ""))
(set (match_dup 3) (plus (match_dup 2) (reg PIC_REG)))
(set (match_operand 0 "" "") (mem (match_dup 3)))]
""
"
{
operands[2] = pic_offset_table_rtx;
rtx insn;
operands[2] = no_new_pseudos ? operands[0] : gen_reg_rtx (Pmode);
operands[3] = no_new_pseudos ? operands[0] : gen_reg_rtx (Pmode);
emit_move_insn (operands[2], operands[1]);
emit_move_insn (operands[3], gen_rtx_PLUS (Pmode,
operands[2],
gen_rtx_REG (Pmode, PIC_REG)));
insn = emit_move_insn (operands[0], gen_rtx_MEM (Pmode, operands[3]));
REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EQUAL, XVECEXP (XEXP (operands[1],
0), 0, 0),
REG_NOTES (insn));
DONE;
}")
(define_expand "symGOTOFF2reg"
[(set (match_operand:SI 0 "" "")
(const:SI (unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_GOTOFF)))
(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))]
(define_expand "sym2GOT"
[(const (unspec [(match_operand 0 "" "")] UNSPEC_GOT))]
""
"")
(define_expand "symGOT2reg"
[(match_operand 0 "" "") (match_operand 1 "" "")]
""
"
{
operands[2] = pic_offset_table_rtx;
rtx gotsym, insn;
gotsym = gen_sym2GOT (operands[1]);
PUT_MODE (gotsym, Pmode);
insn = emit_insn (gen_symGOT_load (operands[0], gotsym));
RTX_UNCHANGING_P (SET_SRC (PATTERN (insn))) = 1;
DONE;
}")
(define_expand "sym2GOTOFF"
[(const (unspec [(match_operand 0 "" "")] UNSPEC_GOTOFF))]
""
"")
(define_expand "symGOTOFF2reg"
[(match_operand 0 "" "") (match_operand 1 "" "")]
""
"
{
rtx gotoffsym, insn;
rtx t = no_new_pseudos ? operands[0] : gen_reg_rtx (GET_MODE (operands[0]));
gotoffsym = gen_sym2GOTOFF (operands[1]);
PUT_MODE (gotoffsym, Pmode);
emit_move_insn (t, gotoffsym);
insn = emit_move_insn (operands[0],
gen_rtx_PLUS (Pmode, t,
gen_rtx_REG (Pmode, PIC_REG)));
REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EQUAL, operands[1],
REG_NOTES (insn));
DONE;
}")
(define_expand "symPLT_label2reg"
[(set (match_operand:SI 0 "" "")
(const (minus:SI
(const (plus:SI
(unspec [(match_operand:SI 1 "" "")] UNSPEC_PLT)
(pc)))
(const (plus:SI
(match_operand:SI 2 "" "")
(const_int 2))))))
(const:SI (minus:SI
(const:SI
(unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PLT))
(const:SI
(minus:SI
(const:SI (plus:SI
(match_operand:SI 2 "" "")
(const_int 2)))
(const:SI (unspec:SI [(pc)] UNSPEC_PIC)))))))
;; Even though the PIC register is not really used by the call
;; sequence in which this is expanded, the PLT code assumes the PIC
;; register is set, so we must not skip its initialization. Since