[interpreter] Add support for scalable operands.

test/mjsunit/ignition/debug-step-prefix-bytecodes.js

Index: test/mjsunit/ignition/debug-step-prefix-bytecodes.js
diff --git a/test/mjsunit/ignition/debug-step-prefix-bytecodes.js b/test/mjsunit/ignition/debug-step-prefix-bytecodes.js
new file mode 100644
index 0000000000000000000000000000000000000000..819fdf84693289ceaaada37bb3951fd031a83228
--- /dev/null
+++ b/test/mjsunit/ignition/debug-step-prefix-bytecodes.js
@@ -0,0 +1,375 @@
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --ignition-filter=f --expose-debug-as debug
+
+// This test tests that full code compiled without debug break slots
+// is recompiled with debug break slots when debugging is started.
+
+// Get the Debug object exposed from the debug context global object.
+Debug = debug.Debug
+
+var done = false;
+var step_count = 0;
+var values = [];
+
+// Debug event listener which steps until the global variable done is true.
+function listener(event, exec_state, event_data, data) {
+  if (event == Debug.DebugEvent.Break) {
+    if (!done) exec_state.prepareStep(Debug.StepAction.StepNext);
+    step_count++;
+  }
+};
+
+// Set the global variables state to prpare the stepping test.
+function prepare_step_test() {
+  done = false;
+  step_count = 0;
+}
+
+// Test function to step through, uses widended bytecodes.
+function f() {
+var x = 10000000;
+var y = x + 1;
+var _aa = 0; values[_aa] = _aa;
+var _ab = 1; values[_ab] = _ab;
+var _ac = 2; values[_ac] = _ac;
+var _ad = 3; values[_ad] = _ad;
+var _ae = 4; values[_ae] = _ae;
+var _af = 5; values[_af] = _af;
+var _ag = 6; values[_ag] = _ag;
+var _ah = 7; values[_ah] = _ah;
+var _ai = 8; values[_ai] = _ai;
+var _aj = 9; values[_aj] = _aj;
+var _ak = 10; values[_ak] = _ak;
+var _al = 11; values[_al] = _al;
+var _am = 12; values[_am] = _am;
+var _an = 13; values[_an] = _an;
+var _ao = 14; values[_ao] = _ao;
+var _ap = 15; values[_ap] = _ap;
+var _ba = 16; values[_ba] = _ba;
+var _bb = 17; values[_bb] = _bb;
+var _bc = 18; values[_bc] = _bc;
+var _bd = 19; values[_bd] = _bd;
+var _be = 20; values[_be] = _be;
+var _bf = 21; values[_bf] = _bf;
+var _bg = 22; values[_bg] = _bg;
+var _bh = 23; values[_bh] = _bh;
+var _bi = 24; values[_bi] = _bi;
+var _bj = 25; values[_bj] = _bj;
+var _bk = 26; values[_bk] = _bk;
+var _bl = 27; values[_bl] = _bl;
+var _bm = 28; values[_bm] = _bm;
+var _bn = 29; values[_bn] = _bn;
+var _bo = 30; values[_bo] = _bo;
+var _bp = 31; values[_bp] = _bp;
+var _ca = 32; values[_ca] = _ca;
+var _cb = 33; values[_cb] = _cb;
+var _cc = 34; values[_cc] = _cc;
+var _cd = 35; values[_cd] = _cd;
+var _ce = 36; values[_ce] = _ce;
+var _cf = 37; values[_cf] = _cf;
+var _cg = 38; values[_cg] = _cg;
+var _ch = 39; values[_ch] = _ch;
+var _ci = 40; values[_ci] = _ci;
+var _cj = 41; values[_cj] = _cj;
+var _ck = 42; values[_ck] = _ck;
+var _cl = 43; values[_cl] = _cl;
+var _cm = 44; values[_cm] = _cm;
+var _cn = 45; values[_cn] = _cn;
+var _co = 46; values[_co] = _co;
+var _cp = 47; values[_cp] = _cp;
+var _da = 48; values[_da] = _da;
+var _db = 49; values[_db] = _db;
+var _dc = 50; values[_dc] = _dc;
+var _dd = 51; values[_dd] = _dd;
+var _de = 52; values[_de] = _de;
+var _df = 53; values[_df] = _df;
+var _dg = 54; values[_dg] = _dg;
+var _dh = 55; values[_dh] = _dh;
+var _di = 56; values[_di] = _di;
+var _dj = 57; values[_dj] = _dj;
+var _dk = 58; values[_dk] = _dk;
+var _dl = 59; values[_dl] = _dl;
+var _dm = 60; values[_dm] = _dm;
+var _dn = 61; values[_dn] = _dn;
+var _do = 62; values[_do] = _do;
+var _dp = 63; values[_dp] = _dp;
+var _ea = 64; values[_ea] = _ea;
+var _eb = 65; values[_eb] = _eb;
+var _ec = 66; values[_ec] = _ec;
+var _ed = 67; values[_ed] = _ed;
+var _ee = 68; values[_ee] = _ee;
+var _ef = 69; values[_ef] = _ef;
+var _eg = 70; values[_eg] = _eg;
+var _eh = 71; values[_eh] = _eh;
+var _ei = 72; values[_ei] = _ei;
+var _ej = 73; values[_ej] = _ej;
+var _ek = 74; values[_ek] = _ek;
+var _el = 75; values[_el] = _el;
+var _em = 76; values[_em] = _em;
+var _en = 77; values[_en] = _en;
+var _eo = 78; values[_eo] = _eo;
+var _ep = 79; values[_ep] = _ep;
+var _fa = 80; values[_fa] = _fa;
+var _fb = 81; values[_fb] = _fb;
+var _fc = 82; values[_fc] = _fc;
+var _fd = 83; values[_fd] = _fd;
+var _fe = 84; values[_fe] = _fe;
+var _ff = 85; values[_ff] = _ff;
+var _fg = 86; values[_fg] = _fg;
+var _fh = 87; values[_fh] = _fh;
+var _fi = 88; values[_fi] = _fi;
+var _fj = 89; values[_fj] = _fj;
+var _fk = 90; values[_fk] = _fk;
+var _fl = 91; values[_fl] = _fl;
+var _fm = 92; values[_fm] = _fm;
+var _fn = 93; values[_fn] = _fn;
+var _fo = 94; values[_fo] = _fo;
+var _fp = 95; values[_fp] = _fp;
+var _ga = 96; values[_ga] = _ga;
+var _gb = 97; values[_gb] = _gb;
+var _gc = 98; values[_gc] = _gc;
+var _gd = 99; values[_gd] = _gd;
+var _ge = 100; values[_ge] = _ge;
+var _gf = 101; values[_gf] = _gf;
+var _gg = 102; values[_gg] = _gg;
+var _gh = 103; values[_gh] = _gh;
+var _gi = 104; values[_gi] = _gi;
+var _gj = 105; values[_gj] = _gj;
+var _gk = 106; values[_gk] = _gk;
+var _gl = 107; values[_gl] = _gl;
+var _gm = 108; values[_gm] = _gm;
+var _gn = 109; values[_gn] = _gn;
+var _go = 110; values[_go] = _go;
+var _gp = 111; values[_gp] = _gp;
+var _ha = 112; values[_ha] = _ha;
+var _hb = 113; values[_hb] = _hb;
+var _hc = 114; values[_hc] = _hc;
+var _hd = 115; values[_hd] = _hd;
+var _he = 116; values[_he] = _he;
+var _hf = 117; values[_hf] = _hf;
+var _hg = 118; values[_hg] = _hg;
+var _hh = 119; values[_hh] = _hh;
+var _hi = 120; values[_hi] = _hi;
+var _hj = 121; values[_hj] = _hj;
+var _hk = 122; values[_hk] = _hk;
+var _hl = 123; values[_hl] = _hl;
+var _hm = 124; values[_hm] = _hm;
+var _hn = 125; values[_hn] = _hn;
+var _ho = 126; values[_ho] = _ho;
+var _hp = 127; values[_hp] = _hp;
+var _ia = 128; values[_ia] = _ia;
+var _ib = 129; values[_ib] = _ib;
+var _ic = 130; values[_ic] = _ic;
+var _id = 131; values[_id] = _id;
+var _ie = 132; values[_ie] = _ie;
+var _if = 133; values[_if] = _if;
+var _ig = 134; values[_ig] = _ig;
+var _ih = 135; values[_ih] = _ih;
+var _ii = 136; values[_ii] = _ii;
+var _ij = 137; values[_ij] = _ij;
+var _ik = 138; values[_ik] = _ik;
+var _il = 139; values[_il] = _il;
+var _im = 140; values[_im] = _im;
+var _in = 141; values[_in] = _in;
+var _io = 142; values[_io] = _io;
+var _ip = 143; values[_ip] = _ip;
+var _ja = 144; values[_ja] = _ja;
+var _jb = 145; values[_jb] = _jb;
+var _jc = 146; values[_jc] = _jc;
+var _jd = 147; values[_jd] = _jd;
+var _je = 148; values[_je] = _je;
+var _jf = 149; values[_jf] = _jf;
+var _jg = 150; values[_jg] = _jg;
+var _jh = 151; values[_jh] = _jh;
+var _ji = 152; values[_ji] = _ji;
+var _jj = 153; values[_jj] = _jj;
+var _jk = 154; values[_jk] = _jk;
+var _jl = 155; values[_jl] = _jl;
+var _jm = 156; values[_jm] = _jm;
+var _jn = 157; values[_jn] = _jn;
+var _jo = 158; values[_jo] = _jo;
+var _jp = 159; values[_jp] = _jp;
+var _ka = 160; values[_ka] = _ka;
+var _kb = 161; values[_kb] = _kb;
+var _kc = 162; values[_kc] = _kc;
+var _kd = 163; values[_kd] = _kd;
+var _ke = 164; values[_ke] = _ke;
+var _kf = 165; values[_kf] = _kf;
+var _kg = 166; values[_kg] = _kg;
+var _kh = 167; values[_kh] = _kh;
+var _ki = 168; values[_ki] = _ki;
+var _kj = 169; values[_kj] = _kj;
+var _kk = 170; values[_kk] = _kk;
+var _kl = 171; values[_kl] = _kl;
+var _km = 172; values[_km] = _km;
+var _kn = 173; values[_kn] = _kn;
+var _ko = 174; values[_ko] = _ko;
+var _kp = 175; values[_kp] = _kp;
+var _la = 176; values[_la] = _la;
+var _lb = 177; values[_lb] = _lb;
+var _lc = 178; values[_lc] = _lc;
+var _ld = 179; values[_ld] = _ld;
+var _le = 180; values[_le] = _le;
+var _lf = 181; values[_lf] = _lf;
+var _lg = 182; values[_lg] = _lg;
+var _lh = 183; values[_lh] = _lh;
+var _li = 184; values[_li] = _li;
+var _lj = 185; values[_lj] = _lj;
+var _lk = 186; values[_lk] = _lk;
+var _ll = 187; values[_ll] = _ll;
+var _lm = 188; values[_lm] = _lm;
+var _ln = 189; values[_ln] = _ln;
+var _lo = 190; values[_lo] = _lo;
+var _lp = 191; values[_lp] = _lp;
+var _ma = 192; values[_ma] = _ma;
+var _mb = 193; values[_mb] = _mb;
+var _mc = 194; values[_mc] = _mc;
+var _md = 195; values[_md] = _md;
+var _me = 196; values[_me] = _me;
+var _mf = 197; values[_mf] = _mf;
+var _mg = 198; values[_mg] = _mg;
+var _mh = 199; values[_mh] = _mh;
+var _mi = 200; values[_mi] = _mi;
+var _mj = 201; values[_mj] = _mj;
+var _mk = 202; values[_mk] = _mk;
+var _ml = 203; values[_ml] = _ml;
+var _mm = 204; values[_mm] = _mm;
+var _mn = 205; values[_mn] = _mn;
+var _mo = 206; values[_mo] = _mo;
+var _mp = 207; values[_mp] = _mp;
+var _na = 208; values[_na] = _na;
+var _nb = 209; values[_nb] = _nb;
+var _nc = 210; values[_nc] = _nc;
+var _nd = 211; values[_nd] = _nd;
+var _ne = 212; values[_ne] = _ne;
+var _nf = 213; values[_nf] = _nf;
+var _ng = 214; values[_ng] = _ng;
+var _nh = 215; values[_nh] = _nh;
+var _ni = 216; values[_ni] = _ni;
+var _nj = 217; values[_nj] = _nj;
+var _nk = 218; values[_nk] = _nk;
+var _nl = 219; values[_nl] = _nl;
+var _nm = 220; values[_nm] = _nm;
+var _nn = 221; values[_nn] = _nn;
+var _no = 222; values[_no] = _no;
+var _np = 223; values[_np] = _np;
+var _oa = 224; values[_oa] = _oa;
+var _ob = 225; values[_ob] = _ob;
+var _oc = 226; values[_oc] = _oc;
+var _od = 227; values[_od] = _od;
+var _oe = 228; values[_oe] = _oe;
+var _of = 229; values[_of] = _of;
+var _og = 230; values[_og] = _og;
+var _oh = 231; values[_oh] = _oh;
+var _oi = 232; values[_oi] = _oi;
+var _oj = 233; values[_oj] = _oj;
+var _ok = 234; values[_ok] = _ok;
+var _ol = 235; values[_ol] = _ol;
+var _om = 236; values[_om] = _om;
+var _on = 237; values[_on] = _on;
+var _oo = 238; values[_oo] = _oo;
+var _op = 239; values[_op] = _op;
+var _pa = 240; values[_pa] = _pa;
+var _pb = 241; values[_pb] = _pb;
+var _pc = 242; values[_pc] = _pc;
+var _pd = 243; values[_pd] = _pd;
+var _pe = 244; values[_pe] = _pe;
+var _pf = 245; values[_pf] = _pf;
+var _pg = 246; values[_pg] = _pg;
+var _ph = 247; values[_ph] = _ph;
+var _pi = 248; values[_pi] = _pi;
+var _pj = 249; values[_pj] = _pj;
+var _pk = 250; values[_pk] = _pk;
+var _pl = 251; values[_pl] = _pl;
+var _pm = 252; values[_pm] = _pm;
+var _pn = 253; values[_pn] = _pn;
+var _po = 254; values[_po] = _po;
+var _pp = 255; values[_pp] = _pp;
+var _qa = 256; values[_qa] = _qa;
+var _qb = 257; values[_qb] = _qb;
+var _qc = 258; values[_qc] = _qc;
+var _qd = 259; values[_qd] = _qd;
+var _qe = 260; values[_qe] = _qe;
+var _qf = 261; values[_qf] = _qf;
+var _qg = 262; values[_qg] = _qg;
+var _qh = 263; values[_qh] = _qh;
+var _qi = 264; values[_qi] = _qi;
+var _qj = 265; values[_qj] = _qj;
+var _qk = 266; values[_qk] = _qk;
+var _ql = 267; values[_ql] = _ql;
+var _qm = 268; values[_qm] = _qm;
+var _qn = 269; values[_qn] = _qn;
+var _qo = 270; values[_qo] = _qo;
+var _qp = 271; values[_qp] = _qp;
+var _ra = 272; values[_ra] = _ra;
+var _rb = 273; values[_rb] = _rb;
+var _rc = 274; values[_rc] = _rc;
+var _rd = 275; values[_rd] = _rd;
+var _re = 276; values[_re] = _re;
+var _rf = 277; values[_rf] = _rf;
+var _rg = 278; values[_rg] = _rg;
+var _rh = 279; values[_rh] = _rh;
+var _ri = 280; values[_ri] = _ri;
+var _rj = 281; values[_rj] = _rj;
+var _rk = 282; values[_rk] = _rk;
+var _rl = 283; values[_rl] = _rl;
+var _rm = 284; values[_rm] = _rm;
+var _rn = 285; values[_rn] = _rn;
+var _ro = 286; values[_ro] = _ro;
+var _rp = 287; values[_rp] = _rp;
+  done = true;
+};
+
+function check_values() {
+  for (var i = 0; i < values.length; i++) {
+    assertEquals(values[i], i);
+    values[i] = -i;
+  }
+}
+
+// Pass 1 - no debugger, no steps seen
+prepare_step_test();
+f();
+check_values();
+assertEquals(0, step_count);
+
+// Pass 2 - debugger attached and stepping from BP
+Debug.setListener(listener);
+var bp = Debug.setBreakPoint(f, 1);
+prepare_step_test();
+f();
+check_values();
+assertEquals(580, step_count);
+Debug.clearBreakPoint(bp);
+
+// Pass 3 - debugger attached and no BP
+prepare_step_test();
+f();
+check_values();
+assertEquals(0, step_count);