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(tablejump_internal3, tablejump_internal4): New patterns.

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(tablejump): Use them for PIC code.

From-SVN: r12139
This commit is contained in:
Jim Wilson 1996-06-02 16:40:42 -07:00
parent bca7cce204
commit 9fa0af71f6
1 changed files with 65 additions and 21 deletions
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86
gcc/config/mips/mips.md
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@ -5869,10 +5869,20 @@ move\\t%0,%z4\\n\\
if (GET_MODE (operands[0]) != Pmode)
abort ();
if (!TARGET_LONG64)
emit_jump_insn (gen_tablejump_internal1 (operands[0], operands[1]));
if (! flag_pic)
{
if (!TARGET_LONG64)
emit_jump_insn (gen_tablejump_internal1 (operands[0], operands[1]));
else
emit_jump_insn (gen_tablejump_internal2 (operands[0], operands[1]));
}
else
emit_jump_insn (gen_tablejump_internal2 (operands[0], operands[1]));
{
if (!TARGET_LONG64)
emit_jump_insn (gen_tablejump_internal3 (operands[0], operands[1]));
else
emit_jump_insn (gen_tablejump_internal4 (operands[0], operands[1]));
}
DONE;
}
@ -5883,39 +5893,73 @@ move\\t%0,%z4\\n\\
(match_operand:SI 0 "register_operand" "d"))
(use (label_ref (match_operand 1 "" "")))]
"!TARGET_LONG64"
"*
{
/* .cpadd expands to add REG,REG,$gp when pic, and nothing when not pic. */
if (TARGET_ABICALLS && mips_abi == ABI_32)
output_asm_insn (\".cpadd\\t%0\", operands);
return \"%*j\\t%0\";
}"
"%*j\\t%0"
[(set_attr "type" "jump")
(set_attr "mode" "none")
(set (attr "length")
(if_then_else (eq_attr "abicalls" "yes")
(const_int 2)
(const_int 1)))])
(set_attr "length" "1")])
(define_insn "tablejump_internal2"
[(set (pc)
(match_operand:DI 0 "register_operand" "d"))
(use (label_ref (match_operand 1 "" "")))]
"TARGET_LONG64"
"%*j\\t%0"
[(set_attr "type" "jump")
(set_attr "mode" "none")
(set_attr "length" "1")])
(define_expand "tablejump_internal3"
[(set (pc)
(plus:SI (match_operand:SI 0 "register_operand" "d")
(label_ref:SI (match_operand:SI 1 "" ""))))]
""
"")
;;; Make sure that this only matches the insn before ADDR_DIFF_VEC. Otherwise
;;; it is not valid.
;;; ??? The length depends on the ABI. It is two for o32, and one for n32.
;;; We just use the conservative number here.
(define_insn ""
[(set (pc)
(plus:SI (match_operand:SI 0 "register_operand" "d")
(label_ref:SI (match_operand:SI 1 "" ""))))]
"!TARGET_LONG64 && next_active_insn (insn) != 0
&& GET_CODE (PATTERN (next_active_insn (insn))) == ADDR_DIFF_VEC
&& PREV_INSN (next_active_insn (insn)) == operands[1]"
"*
{
/* .cpdadd expands to dadd REG,REG,$gp when pic, and nothing when not pic. */
/* ??? SGI as does not have a .cpdadd. */
if (TARGET_ABICALLS && mips_abi == ABI_32)
/* .cpadd expands to add REG,REG,$gp when pic, and nothing when not pic. */
if (mips_abi == ABI_32)
output_asm_insn (\".cpadd\\t%0\", operands);
return \"%*j\\t%0\";
}"
[(set_attr "type" "jump")
(set_attr "mode" "none")
(set (attr "length")
(if_then_else (eq_attr "abicalls" "yes")
(const_int 2)
(const_int 1)))])
(set_attr "length" "2")])
(define_expand "tablejump_internal4"
[(set (pc)
(plus:DI (match_operand:DI 0 "register_operand" "d")
(label_ref:DI (match_operand:SI 1 "" ""))))]
""
"")
;;; Make sure that this only matches the insn before ADDR_DIFF_VEC. Otherwise
;;; it is not valid.
(define_insn ""
[(set (pc)
(plus:DI (match_operand:DI 0 "register_operand" "d")
(label_ref:DI (match_operand:SI 1 "" ""))))]
"!TARGET_LONG64 && next_active_insn (insn) != 0
&& GET_CODE (PATTERN (next_active_insn (insn))) == ADDR_DIFF_VEC
&& PREV_INSN (next_active_insn (insn)) == operands[1]"
"%*j\\t%0"
[(set_attr "type" "jump")
(set_attr "mode" "none")
(set_attr "length" "1")])
;; Function return, only allow after optimization, so that we can
;; eliminate jumps to jumps if no stack space is used.