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* compile.c (iseq_specialized_instruction): DRY and replace chain 

of if-else with switch for special instructions.  based on a
  patch by Vasfed.  https://github.com/ruby/ruby/pull/105


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35089 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2012-03-19 06:20:55 +00:00
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6
ChangeLog
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@ -1,3 +1,9 @@
Mon Mar 19 15:20:53 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
* compile.c (iseq_specialized_instruction): DRY and replace chain
of if-else with switch for special instructions. based on a
patch by Vasfed. https://github.com/ruby/ruby/pull/105
Mon Mar 19 15:05:54 2012 URABE Shyouhei <shyouhei@ruby-lang.org>
* test/test_pty.rb: same as r29280, skip tests when PTY allocation

82
compile.c
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@ -1870,68 +1870,40 @@ iseq_specialized_instruction(rb_iseq_t *iseq, INSN *iobj)
VALUE block = OPERAND_AT(iobj, 2);
VALUE flag = OPERAND_AT(iobj, 3);
/* TODO: should be more sophisticated search */
#define SP_INSN(opt) insn_set_specialized_instruction(iseq, iobj, BIN(opt_##opt))
if (block == 0 && flag == INT2FIX(0)) {
if (argc == 0) {
if (mid == idLength) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_length));
switch (argc) {
case 0:
switch (mid) {
case idLength: SP_INSN(length); break;
case idSize: SP_INSN(size); break;
case idSucc: SP_INSN(succ); break;
case idNot: SP_INSN(not); break;
}
else if (mid == idSize) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_size));
}
else if (mid == idSucc) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_succ));
}
else if (mid == idNot) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_not));
}
}
else if (argc == 1) {
if (0) {
}
else if (mid == idPLUS) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_plus));
}
else if (mid == idMINUS) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_minus));
}
else if (mid == idMULT) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_mult));
}
else if (mid == idDIV) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_div));
}
else if (mid == idMOD) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_mod));
}
else if (mid == idEq) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_eq));
}
else if (mid == idNeq) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_neq));
}
else if (mid == idLT) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_lt));
}
else if (mid == idLE) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_le));
}
else if (mid == idGT) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_gt));
}
else if (mid == idGE) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_ge));
}
else if (mid == idLTLT) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_ltlt));
}
else if (mid == idAREF) {
insn_set_specialized_instruction(iseq, iobj, BIN(opt_aref));
break;
case 1:
switch (mid) {
case idPLUS: SP_INSN(plus); break;
case idMINUS: SP_INSN(minus); break;
case idMULT: SP_INSN(mult); break;
case idDIV: SP_INSN(div); break;
case idMOD: SP_INSN(mod); break;
case idEq: SP_INSN(eq); break;
case idNeq: SP_INSN(neq); break;
case idLT: SP_INSN(lt); break;
case idLE: SP_INSN(le); break;
case idGT: SP_INSN(gt); break;
case idGE: SP_INSN(ge); break;
case idLTLT: SP_INSN(ltlt); break;
case idAREF: SP_INSN(aref); break;
}
break;
}
}
}
return COMPILE_OK;
#undef SP_INSN
}
static int