Adding qemu as a submodule of KVMFORNFV

This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>

1 files changed, 0 insertions, 1331 deletions

diff --git a/qemu/tcg/optimize.c b/qemu/tcg/optimize.c
deleted file mode 100644
index f01160815..000000000
--- a/qemu/tcg/optimize.c
+++ /dev/null
@@ -1,1331 +0,0 @@
-/*
- * Optimizations for Tiny Code Generator for QEMU
- *
- * Copyright (c) 2010 Samsung Electronics.
- * Contributed by Kirill Batuzov <batuzovk@ispras.ru>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "qemu/osdep.h"
-
-
-#include "qemu-common.h"
-#include "tcg-op.h"
-
-#define CASE_OP_32_64(x)                        \
-        glue(glue(case INDEX_op_, x), _i32):    \
-        glue(glue(case INDEX_op_, x), _i64)
-
-struct tcg_temp_info {
-    bool is_const;
-    uint16_t prev_copy;
-    uint16_t next_copy;
-    tcg_target_ulong val;
-    tcg_target_ulong mask;
-};
-
-static struct tcg_temp_info temps[TCG_MAX_TEMPS];
-static TCGTempSet temps_used;
-
-static inline bool temp_is_const(TCGArg arg)
-{
-    return temps[arg].is_const;
-}
-
-static inline bool temp_is_copy(TCGArg arg)
-{
-    return temps[arg].next_copy != arg;
-}
-
-/* Reset TEMP's state, possibly removing the temp for the list of copies.  */
-static void reset_temp(TCGArg temp)
-{
-    temps[temps[temp].next_copy].prev_copy = temps[temp].prev_copy;
-    temps[temps[temp].prev_copy].next_copy = temps[temp].next_copy;
-    temps[temp].next_copy = temp;
-    temps[temp].prev_copy = temp;
-    temps[temp].is_const = false;
-    temps[temp].mask = -1;
-}
-
-/* Reset all temporaries, given that there are NB_TEMPS of them.  */
-static void reset_all_temps(int nb_temps)
-{
-    bitmap_zero(temps_used.l, nb_temps);
-}
-
-/* Initialize and activate a temporary.  */
-static void init_temp_info(TCGArg temp)
-{
-    if (!test_bit(temp, temps_used.l)) {
-        temps[temp].next_copy = temp;
-        temps[temp].prev_copy = temp;
-        temps[temp].is_const = false;
-        temps[temp].mask = -1;
-        set_bit(temp, temps_used.l);
-    }
-}
-
-static TCGOp *insert_op_before(TCGContext *s, TCGOp *old_op,
-                                TCGOpcode opc, int nargs)
-{
-    int oi = s->gen_next_op_idx;
-    int pi = s->gen_next_parm_idx;
-    int prev = old_op->prev;
-    int next = old_op - s->gen_op_buf;
-    TCGOp *new_op;
-
-    tcg_debug_assert(oi < OPC_BUF_SIZE);
-    tcg_debug_assert(pi + nargs <= OPPARAM_BUF_SIZE);
-    s->gen_next_op_idx = oi + 1;
-    s->gen_next_parm_idx = pi + nargs;
-
-    new_op = &s->gen_op_buf[oi];
-    *new_op = (TCGOp){
-        .opc = opc,
-        .args = pi,
-        .prev = prev,
-        .next = next
-    };
-    if (prev >= 0) {
-        s->gen_op_buf[prev].next = oi;
-    } else {
-        s->gen_first_op_idx = oi;
-    }
-    old_op->prev = oi;
-
-    return new_op;
-}
-
-static int op_bits(TCGOpcode op)
-{
-    const TCGOpDef *def = &tcg_op_defs[op];
-    return def->flags & TCG_OPF_64BIT ? 64 : 32;
-}
-
-static TCGOpcode op_to_mov(TCGOpcode op)
-{
-    switch (op_bits(op)) {
-    case 32:
-        return INDEX_op_mov_i32;
-    case 64:
-        return INDEX_op_mov_i64;
-    default:
-        fprintf(stderr, "op_to_mov: unexpected return value of "
-                "function op_bits.\n");
-        tcg_abort();
-    }
-}
-
-static TCGOpcode op_to_movi(TCGOpcode op)
-{
-    switch (op_bits(op)) {
-    case 32:
-        return INDEX_op_movi_i32;
-    case 64:
-        return INDEX_op_movi_i64;
-    default:
-        fprintf(stderr, "op_to_movi: unexpected return value of "
-                "function op_bits.\n");
-        tcg_abort();
-    }
-}
-
-static TCGArg find_better_copy(TCGContext *s, TCGArg temp)
-{
-    TCGArg i;
-
-    /* If this is already a global, we can't do better. */
-    if (temp < s->nb_globals) {
-        return temp;
-    }
-
-    /* Search for a global first. */
-    for (i = temps[temp].next_copy ; i != temp ; i = temps[i].next_copy) {
-        if (i < s->nb_globals) {
-            return i;
-        }
-    }
-
-    /* If it is a temp, search for a temp local. */
-    if (!s->temps[temp].temp_local) {
-        for (i = temps[temp].next_copy ; i != temp ; i = temps[i].next_copy) {
-            if (s->temps[i].temp_local) {
-                return i;
-            }
-        }
-    }
-
-    /* Failure to find a better representation, return the same temp. */
-    return temp;
-}
-
-static bool temps_are_copies(TCGArg arg1, TCGArg arg2)
-{
-    TCGArg i;
-
-    if (arg1 == arg2) {
-        return true;
-    }
-
-    if (!temp_is_copy(arg1) || !temp_is_copy(arg2)) {
-        return false;
-    }
-
-    for (i = temps[arg1].next_copy ; i != arg1 ; i = temps[i].next_copy) {
-        if (i == arg2) {
-            return true;
-        }
-    }
-
-    return false;
-}
-
-static void tcg_opt_gen_movi(TCGContext *s, TCGOp *op, TCGArg *args,
-                             TCGArg dst, TCGArg val)
-{
-    TCGOpcode new_op = op_to_movi(op->opc);
-    tcg_target_ulong mask;
-
-    op->opc = new_op;
-
-    reset_temp(dst);
-    temps[dst].is_const = true;
-    temps[dst].val = val;
-    mask = val;
-    if (TCG_TARGET_REG_BITS > 32 && new_op == INDEX_op_movi_i32) {
-        /* High bits of the destination are now garbage.  */
-        mask |= ~0xffffffffull;
-    }
-    temps[dst].mask = mask;
-
-    args[0] = dst;
-    args[1] = val;
-}
-
-static void tcg_opt_gen_mov(TCGContext *s, TCGOp *op, TCGArg *args,
-                            TCGArg dst, TCGArg src)
-{
-    if (temps_are_copies(dst, src)) {
-        tcg_op_remove(s, op);
-        return;
-    }
-
-    TCGOpcode new_op = op_to_mov(op->opc);
-    tcg_target_ulong mask;
-
-    op->opc = new_op;
-
-    reset_temp(dst);
-    mask = temps[src].mask;
-    if (TCG_TARGET_REG_BITS > 32 && new_op == INDEX_op_mov_i32) {
-        /* High bits of the destination are now garbage.  */
-        mask |= ~0xffffffffull;
-    }
-    temps[dst].mask = mask;
-
-    if (s->temps[src].type == s->temps[dst].type) {
-        temps[dst].next_copy = temps[src].next_copy;
-        temps[dst].prev_copy = src;
-        temps[temps[dst].next_copy].prev_copy = dst;
-        temps[src].next_copy = dst;
-        temps[dst].is_const = temps[src].is_const;
-        temps[dst].val = temps[src].val;
-    }
-
-    args[0] = dst;
-    args[1] = src;
-}
-
-static TCGArg do_constant_folding_2(TCGOpcode op, TCGArg x, TCGArg y)
-{
-    uint64_t l64, h64;
-
-    switch (op) {
-    CASE_OP_32_64(add):
-        return x + y;
-
-    CASE_OP_32_64(sub):
-        return x - y;
-
-    CASE_OP_32_64(mul):
-        return x * y;
-
-    CASE_OP_32_64(and):
-        return x & y;
-
-    CASE_OP_32_64(or):
-        return x | y;
-
-    CASE_OP_32_64(xor):
-        return x ^ y;
-
-    case INDEX_op_shl_i32:
-        return (uint32_t)x << (y & 31);
-
-    case INDEX_op_shl_i64:
-        return (uint64_t)x << (y & 63);
-
-    case INDEX_op_shr_i32:
-        return (uint32_t)x >> (y & 31);
-
-    case INDEX_op_shr_i64:
-        return (uint64_t)x >> (y & 63);
-
-    case INDEX_op_sar_i32:
-        return (int32_t)x >> (y & 31);
-
-    case INDEX_op_sar_i64:
-        return (int64_t)x >> (y & 63);
-
-    case INDEX_op_rotr_i32:
-        return ror32(x, y & 31);
-
-    case INDEX_op_rotr_i64:
-        return ror64(x, y & 63);
-
-    case INDEX_op_rotl_i32:
-        return rol32(x, y & 31);
-
-    case INDEX_op_rotl_i64:
-        return rol64(x, y & 63);
-
-    CASE_OP_32_64(not):
-        return ~x;
-
-    CASE_OP_32_64(neg):
-        return -x;
-
-    CASE_OP_32_64(andc):
-        return x & ~y;
-
-    CASE_OP_32_64(orc):
-        return x | ~y;
-
-    CASE_OP_32_64(eqv):
-        return ~(x ^ y);
-
-    CASE_OP_32_64(nand):
-        return ~(x & y);
-
-    CASE_OP_32_64(nor):
-        return ~(x | y);
-
-    CASE_OP_32_64(ext8s):
-        return (int8_t)x;
-
-    CASE_OP_32_64(ext16s):
-        return (int16_t)x;
-
-    CASE_OP_32_64(ext8u):
-        return (uint8_t)x;
-
-    CASE_OP_32_64(ext16u):
-        return (uint16_t)x;
-
-    case INDEX_op_ext_i32_i64:
-    case INDEX_op_ext32s_i64:
-        return (int32_t)x;
-
-    case INDEX_op_extu_i32_i64:
-    case INDEX_op_extrl_i64_i32:
-    case INDEX_op_ext32u_i64:
-        return (uint32_t)x;
-
-    case INDEX_op_extrh_i64_i32:
-        return (uint64_t)x >> 32;
-
-    case INDEX_op_muluh_i32:
-        return ((uint64_t)(uint32_t)x * (uint32_t)y) >> 32;
-    case INDEX_op_mulsh_i32:
-        return ((int64_t)(int32_t)x * (int32_t)y) >> 32;
-
-    case INDEX_op_muluh_i64:
-        mulu64(&l64, &h64, x, y);
-        return h64;
-    case INDEX_op_mulsh_i64:
-        muls64(&l64, &h64, x, y);
-        return h64;
-
-    case INDEX_op_div_i32:
-        /* Avoid crashing on divide by zero, otherwise undefined.  */
-        return (int32_t)x / ((int32_t)y ? : 1);
-    case INDEX_op_divu_i32:
-        return (uint32_t)x / ((uint32_t)y ? : 1);
-    case INDEX_op_div_i64:
-        return (int64_t)x / ((int64_t)y ? : 1);
-    case INDEX_op_divu_i64:
-        return (uint64_t)x / ((uint64_t)y ? : 1);
-
-    case INDEX_op_rem_i32:
-        return (int32_t)x % ((int32_t)y ? : 1);
-    case INDEX_op_remu_i32:
-        return (uint32_t)x % ((uint32_t)y ? : 1);
-    case INDEX_op_rem_i64:
-        return (int64_t)x % ((int64_t)y ? : 1);
-    case INDEX_op_remu_i64:
-        return (uint64_t)x % ((uint64_t)y ? : 1);
-
-    default:
-        fprintf(stderr,
-                "Unrecognized operation %d in do_constant_folding.\n", op);
-        tcg_abort();
-    }
-}
-
-static TCGArg do_constant_folding(TCGOpcode op, TCGArg x, TCGArg y)
-{
-    TCGArg res = do_constant_folding_2(op, x, y);
-    if (op_bits(op) == 32) {
-        res = (int32_t)res;
-    }
-    return res;
-}
-
-static bool do_constant_folding_cond_32(uint32_t x, uint32_t y, TCGCond c)
-{
-    switch (c) {
-    case TCG_COND_EQ:
-        return x == y;
-    case TCG_COND_NE:
-        return x != y;
-    case TCG_COND_LT:
-        return (int32_t)x < (int32_t)y;
-    case TCG_COND_GE:
-        return (int32_t)x >= (int32_t)y;
-    case TCG_COND_LE:
-        return (int32_t)x <= (int32_t)y;
-    case TCG_COND_GT:
-        return (int32_t)x > (int32_t)y;
-    case TCG_COND_LTU:
-        return x < y;
-    case TCG_COND_GEU:
-        return x >= y;
-    case TCG_COND_LEU:
-        return x <= y;
-    case TCG_COND_GTU:
-        return x > y;
-    default:
-        tcg_abort();
-    }
-}
-
-static bool do_constant_folding_cond_64(uint64_t x, uint64_t y, TCGCond c)
-{
-    switch (c) {
-    case TCG_COND_EQ:
-        return x == y;
-    case TCG_COND_NE:
-        return x != y;
-    case TCG_COND_LT:
-        return (int64_t)x < (int64_t)y;
-    case TCG_COND_GE:
-        return (int64_t)x >= (int64_t)y;
-    case TCG_COND_LE:
-        return (int64_t)x <= (int64_t)y;
-    case TCG_COND_GT:
-        return (int64_t)x > (int64_t)y;
-    case TCG_COND_LTU:
-        return x < y;
-    case TCG_COND_GEU:
-        return x >= y;
-    case TCG_COND_LEU:
-        return x <= y;
-    case TCG_COND_GTU:
-        return x > y;
-    default:
-        tcg_abort();
-    }
-}
-
-static bool do_constant_folding_cond_eq(TCGCond c)
-{
-    switch (c) {
-    case TCG_COND_GT:
-    case TCG_COND_LTU:
-    case TCG_COND_LT:
-    case TCG_COND_GTU:
-    case TCG_COND_NE:
-        return 0;
-    case TCG_COND_GE:
-    case TCG_COND_GEU:
-    case TCG_COND_LE:
-    case TCG_COND_LEU:
-    case TCG_COND_EQ:
-        return 1;
-    default:
-        tcg_abort();
-    }
-}
-
-/* Return 2 if the condition can't be simplified, and the result
-   of the condition (0 or 1) if it can */
-static TCGArg do_constant_folding_cond(TCGOpcode op, TCGArg x,
-                                       TCGArg y, TCGCond c)
-{
-    if (temp_is_const(x) && temp_is_const(y)) {
-        switch (op_bits(op)) {
-        case 32:
-            return do_constant_folding_cond_32(temps[x].val, temps[y].val, c);
-        case 64:
-            return do_constant_folding_cond_64(temps[x].val, temps[y].val, c);
-        default:
-            tcg_abort();
-        }
-    } else if (temps_are_copies(x, y)) {
-        return do_constant_folding_cond_eq(c);
-    } else if (temp_is_const(y) && temps[y].val == 0) {
-        switch (c) {
-        case TCG_COND_LTU:
-            return 0;
-        case TCG_COND_GEU:
-            return 1;
-        default:
-            return 2;
-        }
-    } else {
-        return 2;
-    }
-}
-
-/* Return 2 if the condition can't be simplified, and the result
-   of the condition (0 or 1) if it can */
-static TCGArg do_constant_folding_cond2(TCGArg *p1, TCGArg *p2, TCGCond c)
-{
-    TCGArg al = p1[0], ah = p1[1];
-    TCGArg bl = p2[0], bh = p2[1];
-
-    if (temp_is_const(bl) && temp_is_const(bh)) {
-        uint64_t b = ((uint64_t)temps[bh].val << 32) | (uint32_t)temps[bl].val;
-
-        if (temp_is_const(al) && temp_is_const(ah)) {
-            uint64_t a;
-            a = ((uint64_t)temps[ah].val << 32) | (uint32_t)temps[al].val;
-            return do_constant_folding_cond_64(a, b, c);
-        }
-        if (b == 0) {
-            switch (c) {
-            case TCG_COND_LTU:
-                return 0;
-            case TCG_COND_GEU:
-                return 1;
-            default:
-                break;
-            }
-        }
-    }
-    if (temps_are_copies(al, bl) && temps_are_copies(ah, bh)) {
-        return do_constant_folding_cond_eq(c);
-    }
-    return 2;
-}
-
-static bool swap_commutative(TCGArg dest, TCGArg *p1, TCGArg *p2)
-{
-    TCGArg a1 = *p1, a2 = *p2;
-    int sum = 0;
-    sum += temp_is_const(a1);
-    sum -= temp_is_const(a2);
-
-    /* Prefer the constant in second argument, and then the form
-       op a, a, b, which is better handled on non-RISC hosts. */
-    if (sum > 0 || (sum == 0 && dest == a2)) {
-        *p1 = a2;
-        *p2 = a1;
-        return true;
-    }
-    return false;
-}
-
-static bool swap_commutative2(TCGArg *p1, TCGArg *p2)
-{
-    int sum = 0;
-    sum += temp_is_const(p1[0]);
-    sum += temp_is_const(p1[1]);
-    sum -= temp_is_const(p2[0]);
-    sum -= temp_is_const(p2[1]);
-    if (sum > 0) {
-        TCGArg t;
-        t = p1[0], p1[0] = p2[0], p2[0] = t;
-        t = p1[1], p1[1] = p2[1], p2[1] = t;
-        return true;
-    }
-    return false;
-}
-
-/* Propagate constants and copies, fold constant expressions. */
-void tcg_optimize(TCGContext *s)
-{
-    int oi, oi_next, nb_temps, nb_globals;
-
-    /* Array VALS has an element for each temp.
-       If this temp holds a constant then its value is kept in VALS' element.
-       If this temp is a copy of other ones then the other copies are
-       available through the doubly linked circular list. */
-
-    nb_temps = s->nb_temps;
-    nb_globals = s->nb_globals;
-    reset_all_temps(nb_temps);
-
-    for (oi = s->gen_first_op_idx; oi >= 0; oi = oi_next) {
-        tcg_target_ulong mask, partmask, affected;
-        int nb_oargs, nb_iargs, i;
-        TCGArg tmp;
-
-        TCGOp * const op = &s->gen_op_buf[oi];
-        TCGArg * const args = &s->gen_opparam_buf[op->args];
-        TCGOpcode opc = op->opc;
-        const TCGOpDef *def = &tcg_op_defs[opc];
-
-        oi_next = op->next;
-
-        /* Count the arguments, and initialize the temps that are
-           going to be used */
-        if (opc == INDEX_op_call) {
-            nb_oargs = op->callo;
-            nb_iargs = op->calli;
-            for (i = 0; i < nb_oargs + nb_iargs; i++) {
-                tmp = args[i];
-                if (tmp != TCG_CALL_DUMMY_ARG) {
-                    init_temp_info(tmp);
-                }
-            }
-        } else {
-            nb_oargs = def->nb_oargs;
-            nb_iargs = def->nb_iargs;
-            for (i = 0; i < nb_oargs + nb_iargs; i++) {
-                init_temp_info(args[i]);
-            }
-        }
-
-        /* Do copy propagation */
-        for (i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
-            if (temp_is_copy(args[i])) {
-                args[i] = find_better_copy(s, args[i]);
-            }
-        }
-
-        /* For commutative operations make constant second argument */
-        switch (opc) {
-        CASE_OP_32_64(add):
-        CASE_OP_32_64(mul):
-        CASE_OP_32_64(and):
-        CASE_OP_32_64(or):
-        CASE_OP_32_64(xor):
-        CASE_OP_32_64(eqv):
-        CASE_OP_32_64(nand):
-        CASE_OP_32_64(nor):
-        CASE_OP_32_64(muluh):
-        CASE_OP_32_64(mulsh):
-            swap_commutative(args[0], &args[1], &args[2]);
-            break;
-        CASE_OP_32_64(brcond):
-            if (swap_commutative(-1, &args[0], &args[1])) {
-                args[2] = tcg_swap_cond(args[2]);
-            }
-            break;
-        CASE_OP_32_64(setcond):
-            if (swap_commutative(args[0], &args[1], &args[2])) {
-                args[3] = tcg_swap_cond(args[3]);
-            }
-            break;
-        CASE_OP_32_64(movcond):
-            if (swap_commutative(-1, &args[1], &args[2])) {
-                args[5] = tcg_swap_cond(args[5]);
-            }
-            /* For movcond, we canonicalize the "false" input reg to match
-               the destination reg so that the tcg backend can implement
-               a "move if true" operation.  */
-            if (swap_commutative(args[0], &args[4], &args[3])) {
-                args[5] = tcg_invert_cond(args[5]);
-            }
-            break;
-        CASE_OP_32_64(add2):
-            swap_commutative(args[0], &args[2], &args[4]);
-            swap_commutative(args[1], &args[3], &args[5]);
-            break;
-        CASE_OP_32_64(mulu2):
-        CASE_OP_32_64(muls2):
-            swap_commutative(args[0], &args[2], &args[3]);
-            break;
-        case INDEX_op_brcond2_i32:
-            if (swap_commutative2(&args[0], &args[2])) {
-                args[4] = tcg_swap_cond(args[4]);
-            }
-            break;
-        case INDEX_op_setcond2_i32:
-            if (swap_commutative2(&args[1], &args[3])) {
-                args[5] = tcg_swap_cond(args[5]);
-            }
-            break;
-        default:
-            break;
-        }
-
-        /* Simplify expressions for "shift/rot r, 0, a => movi r, 0",
-           and "sub r, 0, a => neg r, a" case.  */
-        switch (opc) {
-        CASE_OP_32_64(shl):
-        CASE_OP_32_64(shr):
-        CASE_OP_32_64(sar):
-        CASE_OP_32_64(rotl):
-        CASE_OP_32_64(rotr):
-            if (temp_is_const(args[1]) && temps[args[1]].val == 0) {
-                tcg_opt_gen_movi(s, op, args, args[0], 0);
-                continue;
-            }
-            break;
-        CASE_OP_32_64(sub):
-            {
-                TCGOpcode neg_op;
-                bool have_neg;
-
-                if (temp_is_const(args[2])) {
-                    /* Proceed with possible constant folding. */
-                    break;
-                }
-                if (opc == INDEX_op_sub_i32) {
-                    neg_op = INDEX_op_neg_i32;
-                    have_neg = TCG_TARGET_HAS_neg_i32;
-                } else {
-                    neg_op = INDEX_op_neg_i64;
-                    have_neg = TCG_TARGET_HAS_neg_i64;
-                }
-                if (!have_neg) {
-                    break;
-                }
-                if (temp_is_const(args[1]) && temps[args[1]].val == 0) {
-                    op->opc = neg_op;
-                    reset_temp(args[0]);
-                    args[1] = args[2];
-                    continue;
-                }
-            }
-            break;
-        CASE_OP_32_64(xor):
-        CASE_OP_32_64(nand):
-            if (!temp_is_const(args[1])
-                && temp_is_const(args[2]) && temps[args[2]].val == -1) {
-                i = 1;
-                goto try_not;
-            }
-            break;
-        CASE_OP_32_64(nor):
-            if (!temp_is_const(args[1])
-                && temp_is_const(args[2]) && temps[args[2]].val == 0) {
-                i = 1;
-                goto try_not;
-            }
-            break;
-        CASE_OP_32_64(andc):
-            if (!temp_is_const(args[2])
-                && temp_is_const(args[1]) && temps[args[1]].val == -1) {
-                i = 2;
-                goto try_not;
-            }
-            break;
-        CASE_OP_32_64(orc):
-        CASE_OP_32_64(eqv):
-            if (!temp_is_const(args[2])
-                && temp_is_const(args[1]) && temps[args[1]].val == 0) {
-                i = 2;
-                goto try_not;
-            }
-            break;
-        try_not:
-            {
-                TCGOpcode not_op;
-                bool have_not;
-
-                if (def->flags & TCG_OPF_64BIT) {
-                    not_op = INDEX_op_not_i64;
-                    have_not = TCG_TARGET_HAS_not_i64;
-                } else {
-                    not_op = INDEX_op_not_i32;
-                    have_not = TCG_TARGET_HAS_not_i32;
-                }
-                if (!have_not) {
-                    break;
-                }
-                op->opc = not_op;
-                reset_temp(args[0]);
-                args[1] = args[i];
-                continue;
-            }
-        default:
-            break;
-        }
-
-        /* Simplify expression for "op r, a, const => mov r, a" cases */
-        switch (opc) {
-        CASE_OP_32_64(add):
-        CASE_OP_32_64(sub):
-        CASE_OP_32_64(shl):
-        CASE_OP_32_64(shr):
-        CASE_OP_32_64(sar):
-        CASE_OP_32_64(rotl):
-        CASE_OP_32_64(rotr):
-        CASE_OP_32_64(or):
-        CASE_OP_32_64(xor):
-        CASE_OP_32_64(andc):
-            if (!temp_is_const(args[1])
-                && temp_is_const(args[2]) && temps[args[2]].val == 0) {
-                tcg_opt_gen_mov(s, op, args, args[0], args[1]);
-                continue;
-            }
-            break;
-        CASE_OP_32_64(and):
-        CASE_OP_32_64(orc):
-        CASE_OP_32_64(eqv):
-            if (!temp_is_const(args[1])
-                && temp_is_const(args[2]) && temps[args[2]].val == -1) {
-                tcg_opt_gen_mov(s, op, args, args[0], args[1]);
-                continue;
-            }
-            break;
-        default:
-            break;
-        }
-
-        /* Simplify using known-zero bits. Currently only ops with a single
-           output argument is supported. */
-        mask = -1;
-        affected = -1;
-        switch (opc) {
-        CASE_OP_32_64(ext8s):
-            if ((temps[args[1]].mask & 0x80) != 0) {
-                break;
-            }
-        CASE_OP_32_64(ext8u):
-            mask = 0xff;
-            goto and_const;
-        CASE_OP_32_64(ext16s):
-            if ((temps[args[1]].mask & 0x8000) != 0) {
-                break;
-            }
-        CASE_OP_32_64(ext16u):
-            mask = 0xffff;
-            goto and_const;
-        case INDEX_op_ext32s_i64:
-            if ((temps[args[1]].mask & 0x80000000) != 0) {
-                break;
-            }
-        case INDEX_op_ext32u_i64:
-            mask = 0xffffffffU;
-            goto and_const;
-
-        CASE_OP_32_64(and):
-            mask = temps[args[2]].mask;
-            if (temp_is_const(args[2])) {
-        and_const:
-                affected = temps[args[1]].mask & ~mask;
-            }
-            mask = temps[args[1]].mask & mask;
-            break;
-
-        case INDEX_op_ext_i32_i64:
-            if ((temps[args[1]].mask & 0x80000000) != 0) {
-                break;
-            }
-        case INDEX_op_extu_i32_i64:
-            /* We do not compute affected as it is a size changing op.  */
-            mask = (uint32_t)temps[args[1]].mask;
-            break;
-
-        CASE_OP_32_64(andc):
-            /* Known-zeros does not imply known-ones.  Therefore unless
-               args[2] is constant, we can't infer anything from it.  */
-            if (temp_is_const(args[2])) {
-                mask = ~temps[args[2]].mask;
-                goto and_const;
-            }
-            /* But we certainly know nothing outside args[1] may be set. */
-            mask = temps[args[1]].mask;
-            break;
-
-        case INDEX_op_sar_i32:
-            if (temp_is_const(args[2])) {
-                tmp = temps[args[2]].val & 31;
-                mask = (int32_t)temps[args[1]].mask >> tmp;
-            }
-            break;
-        case INDEX_op_sar_i64:
-            if (temp_is_const(args[2])) {
-                tmp = temps[args[2]].val & 63;
-                mask = (int64_t)temps[args[1]].mask >> tmp;
-            }
-            break;
-
-        case INDEX_op_shr_i32:
-            if (temp_is_const(args[2])) {
-                tmp = temps[args[2]].val & 31;
-                mask = (uint32_t)temps[args[1]].mask >> tmp;
-            }
-            break;
-        case INDEX_op_shr_i64:
-            if (temp_is_const(args[2])) {
-                tmp = temps[args[2]].val & 63;
-                mask = (uint64_t)temps[args[1]].mask >> tmp;
-            }
-            break;
-
-        case INDEX_op_extrl_i64_i32:
-            mask = (uint32_t)temps[args[1]].mask;
-            break;
-        case INDEX_op_extrh_i64_i32:
-            mask = (uint64_t)temps[args[1]].mask >> 32;
-            break;
-
-        CASE_OP_32_64(shl):
-            if (temp_is_const(args[2])) {
-                tmp = temps[args[2]].val & (TCG_TARGET_REG_BITS - 1);
-                mask = temps[args[1]].mask << tmp;
-            }
-            break;
-
-        CASE_OP_32_64(neg):
-            /* Set to 1 all bits to the left of the rightmost.  */
-            mask = -(temps[args[1]].mask & -temps[args[1]].mask);
-            break;
-
-        CASE_OP_32_64(deposit):
-            mask = deposit64(temps[args[1]].mask, args[3], args[4],
-                             temps[args[2]].mask);
-            break;
-
-        CASE_OP_32_64(or):
-        CASE_OP_32_64(xor):
-            mask = temps[args[1]].mask | temps[args[2]].mask;
-            break;
-
-        CASE_OP_32_64(setcond):
-        case INDEX_op_setcond2_i32:
-            mask = 1;
-            break;
-
-        CASE_OP_32_64(movcond):
-            mask = temps[args[3]].mask | temps[args[4]].mask;
-            break;
-
-        CASE_OP_32_64(ld8u):
-            mask = 0xff;
-            break;
-        CASE_OP_32_64(ld16u):
-            mask = 0xffff;
-            break;
-        case INDEX_op_ld32u_i64:
-            mask = 0xffffffffu;
-            break;
-
-        CASE_OP_32_64(qemu_ld):
-            {
-                TCGMemOpIdx oi = args[nb_oargs + nb_iargs];
-                TCGMemOp mop = get_memop(oi);
-                if (!(mop & MO_SIGN)) {
-                    mask = (2ULL << ((8 << (mop & MO_SIZE)) - 1)) - 1;
-                }
-            }
-            break;
-
-        default:
-            break;
-        }
-
-        /* 32-bit ops generate 32-bit results.  For the result is zero test
-           below, we can ignore high bits, but for further optimizations we
-           need to record that the high bits contain garbage.  */
-        partmask = mask;
-        if (!(def->flags & TCG_OPF_64BIT)) {
-            mask |= ~(tcg_target_ulong)0xffffffffu;
-            partmask &= 0xffffffffu;
-            affected &= 0xffffffffu;
-        }
-
-        if (partmask == 0) {
-            tcg_debug_assert(nb_oargs == 1);
-            tcg_opt_gen_movi(s, op, args, args[0], 0);
-            continue;
-        }
-        if (affected == 0) {
-            tcg_debug_assert(nb_oargs == 1);
-            tcg_opt_gen_mov(s, op, args, args[0], args[1]);
-            continue;
-        }
-
-        /* Simplify expression for "op r, a, 0 => movi r, 0" cases */
-        switch (opc) {
-        CASE_OP_32_64(and):
-        CASE_OP_32_64(mul):
-        CASE_OP_32_64(muluh):
-        CASE_OP_32_64(mulsh):
-            if ((temp_is_const(args[2]) && temps[args[2]].val == 0)) {
-                tcg_opt_gen_movi(s, op, args, args[0], 0);
-                continue;
-            }
-            break;
-        default:
-            break;
-        }
-
-        /* Simplify expression for "op r, a, a => mov r, a" cases */
-        switch (opc) {
-        CASE_OP_32_64(or):
-        CASE_OP_32_64(and):
-            if (temps_are_copies(args[1], args[2])) {
-                tcg_opt_gen_mov(s, op, args, args[0], args[1]);
-                continue;
-            }
-            break;
-        default:
-            break;
-        }
-
-        /* Simplify expression for "op r, a, a => movi r, 0" cases */
-        switch (opc) {
-        CASE_OP_32_64(andc):
-        CASE_OP_32_64(sub):
-        CASE_OP_32_64(xor):
-            if (temps_are_copies(args[1], args[2])) {
-                tcg_opt_gen_movi(s, op, args, args[0], 0);
-                continue;
-            }
-            break;
-        default:
-            break;
-        }
-
-        /* Propagate constants through copy operations and do constant
-           folding.  Constants will be substituted to arguments by register
-           allocator where needed and possible.  Also detect copies. */
-        switch (opc) {
-        CASE_OP_32_64(mov):
-            tcg_opt_gen_mov(s, op, args, args[0], args[1]);
-            break;
-        CASE_OP_32_64(movi):
-            tcg_opt_gen_movi(s, op, args, args[0], args[1]);
-            break;
-
-        CASE_OP_32_64(not):
-        CASE_OP_32_64(neg):
-        CASE_OP_32_64(ext8s):
-        CASE_OP_32_64(ext8u):
-        CASE_OP_32_64(ext16s):
-        CASE_OP_32_64(ext16u):
-        case INDEX_op_ext32s_i64:
-        case INDEX_op_ext32u_i64:
-        case INDEX_op_ext_i32_i64:
-        case INDEX_op_extu_i32_i64:
-        case INDEX_op_extrl_i64_i32:
-        case INDEX_op_extrh_i64_i32:
-            if (temp_is_const(args[1])) {
-                tmp = do_constant_folding(opc, temps[args[1]].val, 0);
-                tcg_opt_gen_movi(s, op, args, args[0], tmp);
-                break;
-            }
-            goto do_default;
-
-        CASE_OP_32_64(add):
-        CASE_OP_32_64(sub):
-        CASE_OP_32_64(mul):
-        CASE_OP_32_64(or):
-        CASE_OP_32_64(and):
-        CASE_OP_32_64(xor):
-        CASE_OP_32_64(shl):
-        CASE_OP_32_64(shr):
-        CASE_OP_32_64(sar):
-        CASE_OP_32_64(rotl):
-        CASE_OP_32_64(rotr):
-        CASE_OP_32_64(andc):
-        CASE_OP_32_64(orc):
-        CASE_OP_32_64(eqv):
-        CASE_OP_32_64(nand):
-        CASE_OP_32_64(nor):
-        CASE_OP_32_64(muluh):
-        CASE_OP_32_64(mulsh):
-        CASE_OP_32_64(div):
-        CASE_OP_32_64(divu):
-        CASE_OP_32_64(rem):
-        CASE_OP_32_64(remu):
-            if (temp_is_const(args[1]) && temp_is_const(args[2])) {
-                tmp = do_constant_folding(opc, temps[args[1]].val,
-                                          temps[args[2]].val);
-                tcg_opt_gen_movi(s, op, args, args[0], tmp);
-                break;
-            }
-            goto do_default;
-
-        CASE_OP_32_64(deposit):
-            if (temp_is_const(args[1]) && temp_is_const(args[2])) {
-                tmp = deposit64(temps[args[1]].val, args[3], args[4],
-                                temps[args[2]].val);
-                tcg_opt_gen_movi(s, op, args, args[0], tmp);
-                break;
-            }
-            goto do_default;
-
-        CASE_OP_32_64(setcond):
-            tmp = do_constant_folding_cond(opc, args[1], args[2], args[3]);
-            if (tmp != 2) {
-                tcg_opt_gen_movi(s, op, args, args[0], tmp);
-                break;
-            }
-            goto do_default;
-
-        CASE_OP_32_64(brcond):
-            tmp = do_constant_folding_cond(opc, args[0], args[1], args[2]);
-            if (tmp != 2) {
-                if (tmp) {
-                    reset_all_temps(nb_temps);
-                    op->opc = INDEX_op_br;
-                    args[0] = args[3];
-                } else {
-                    tcg_op_remove(s, op);
-                }
-                break;
-            }
-            goto do_default;
-
-        CASE_OP_32_64(movcond):
-            tmp = do_constant_folding_cond(opc, args[1], args[2], args[5]);
-            if (tmp != 2) {
-                tcg_opt_gen_mov(s, op, args, args[0], args[4-tmp]);
-                break;
-            }
-            goto do_default;
-
-        case INDEX_op_add2_i32:
-        case INDEX_op_sub2_i32:
-            if (temp_is_const(args[2]) && temp_is_const(args[3])
-                && temp_is_const(args[4]) && temp_is_const(args[5])) {
-                uint32_t al = temps[args[2]].val;
-                uint32_t ah = temps[args[3]].val;
-                uint32_t bl = temps[args[4]].val;
-                uint32_t bh = temps[args[5]].val;
-                uint64_t a = ((uint64_t)ah << 32) | al;
-                uint64_t b = ((uint64_t)bh << 32) | bl;
-                TCGArg rl, rh;
-                TCGOp *op2 = insert_op_before(s, op, INDEX_op_movi_i32, 2);
-                TCGArg *args2 = &s->gen_opparam_buf[op2->args];
-
-                if (opc == INDEX_op_add2_i32) {
-                    a += b;
-                } else {
-                    a -= b;
-                }
-
-                rl = args[0];
-                rh = args[1];
-                tcg_opt_gen_movi(s, op, args, rl, (int32_t)a);
-                tcg_opt_gen_movi(s, op2, args2, rh, (int32_t)(a >> 32));
-
-                /* We've done all we need to do with the movi.  Skip it.  */
-                oi_next = op2->next;
-                break;
-            }
-            goto do_default;
-
-        case INDEX_op_mulu2_i32:
-            if (temp_is_const(args[2]) && temp_is_const(args[3])) {
-                uint32_t a = temps[args[2]].val;
-                uint32_t b = temps[args[3]].val;
-                uint64_t r = (uint64_t)a * b;
-                TCGArg rl, rh;
-                TCGOp *op2 = insert_op_before(s, op, INDEX_op_movi_i32, 2);
-                TCGArg *args2 = &s->gen_opparam_buf[op2->args];
-
-                rl = args[0];
-                rh = args[1];
-                tcg_opt_gen_movi(s, op, args, rl, (int32_t)r);
-                tcg_opt_gen_movi(s, op2, args2, rh, (int32_t)(r >> 32));
-
-                /* We've done all we need to do with the movi.  Skip it.  */
-                oi_next = op2->next;
-                break;
-            }
-            goto do_default;
-
-        case INDEX_op_brcond2_i32:
-            tmp = do_constant_folding_cond2(&args[0], &args[2], args[4]);
-            if (tmp != 2) {
-                if (tmp) {
-            do_brcond_true:
-                    reset_all_temps(nb_temps);
-                    op->opc = INDEX_op_br;
-                    args[0] = args[5];
-                } else {
-            do_brcond_false:
-                    tcg_op_remove(s, op);
-                }
-            } else if ((args[4] == TCG_COND_LT || args[4] == TCG_COND_GE)
-                       && temp_is_const(args[2]) && temps[args[2]].val == 0
-                       && temp_is_const(args[3]) && temps[args[3]].val == 0) {
-                /* Simplify LT/GE comparisons vs zero to a single compare
-                   vs the high word of the input.  */
-            do_brcond_high:
-                reset_all_temps(nb_temps);
-                op->opc = INDEX_op_brcond_i32;
-                args[0] = args[1];
-                args[1] = args[3];
-                args[2] = args[4];
-                args[3] = args[5];
-            } else if (args[4] == TCG_COND_EQ) {
-                /* Simplify EQ comparisons where one of the pairs
-                   can be simplified.  */
-                tmp = do_constant_folding_cond(INDEX_op_brcond_i32,
-                                               args[0], args[2], TCG_COND_EQ);
-                if (tmp == 0) {
-                    goto do_brcond_false;
-                } else if (tmp == 1) {
-                    goto do_brcond_high;
-                }
-                tmp = do_constant_folding_cond(INDEX_op_brcond_i32,
-                                               args[1], args[3], TCG_COND_EQ);
-                if (tmp == 0) {
-                    goto do_brcond_false;
-                } else if (tmp != 1) {
-                    goto do_default;
-                }
-            do_brcond_low:
-                reset_all_temps(nb_temps);
-                op->opc = INDEX_op_brcond_i32;
-                args[1] = args[2];
-                args[2] = args[4];
-                args[3] = args[5];
-            } else if (args[4] == TCG_COND_NE) {
-                /* Simplify NE comparisons where one of the pairs
-                   can be simplified.  */
-                tmp = do_constant_folding_cond(INDEX_op_brcond_i32,
-                                               args[0], args[2], TCG_COND_NE);
-                if (tmp == 0) {
-                    goto do_brcond_high;
-                } else if (tmp == 1) {
-                    goto do_brcond_true;
-                }
-                tmp = do_constant_folding_cond(INDEX_op_brcond_i32,
-                                               args[1], args[3], TCG_COND_NE);
-                if (tmp == 0) {
-                    goto do_brcond_low;
-                } else if (tmp == 1) {
-                    goto do_brcond_true;
-                }
-                goto do_default;
-            } else {
-                goto do_default;
-            }
-            break;
-
-        case INDEX_op_setcond2_i32:
-            tmp = do_constant_folding_cond2(&args[1], &args[3], args[5]);
-            if (tmp != 2) {
-            do_setcond_const:
-                tcg_opt_gen_movi(s, op, args, args[0], tmp);
-            } else if ((args[5] == TCG_COND_LT || args[5] == TCG_COND_GE)
-                       && temp_is_const(args[3]) && temps[args[3]].val == 0
-                       && temp_is_const(args[4]) && temps[args[4]].val == 0) {
-                /* Simplify LT/GE comparisons vs zero to a single compare
-                   vs the high word of the input.  */
-            do_setcond_high:
-                reset_temp(args[0]);
-                temps[args[0]].mask = 1;
-                op->opc = INDEX_op_setcond_i32;
-                args[1] = args[2];
-                args[2] = args[4];
-                args[3] = args[5];
-            } else if (args[5] == TCG_COND_EQ) {
-                /* Simplify EQ comparisons where one of the pairs
-                   can be simplified.  */
-                tmp = do_constant_folding_cond(INDEX_op_setcond_i32,
-                                               args[1], args[3], TCG_COND_EQ);
-                if (tmp == 0) {
-                    goto do_setcond_const;
-                } else if (tmp == 1) {
-                    goto do_setcond_high;
-                }
-                tmp = do_constant_folding_cond(INDEX_op_setcond_i32,
-                                               args[2], args[4], TCG_COND_EQ);
-                if (tmp == 0) {
-                    goto do_setcond_high;
-                } else if (tmp != 1) {
-                    goto do_default;
-                }
-            do_setcond_low:
-                reset_temp(args[0]);
-                temps[args[0]].mask = 1;
-                op->opc = INDEX_op_setcond_i32;
-                args[2] = args[3];
-                args[3] = args[5];
-            } else if (args[5] == TCG_COND_NE) {
-                /* Simplify NE comparisons where one of the pairs
-                   can be simplified.  */
-                tmp = do_constant_folding_cond(INDEX_op_setcond_i32,
-                                               args[1], args[3], TCG_COND_NE);
-                if (tmp == 0) {
-                    goto do_setcond_high;
-                } else if (tmp == 1) {
-                    goto do_setcond_const;
-                }
-                tmp = do_constant_folding_cond(INDEX_op_setcond_i32,
-                                               args[2], args[4], TCG_COND_NE);
-                if (tmp == 0) {
-                    goto do_setcond_low;
-                } else if (tmp == 1) {
-                    goto do_setcond_const;
-                }
-                goto do_default;
-            } else {
-                goto do_default;
-            }
-            break;
-
-        case INDEX_op_call:
-            if (!(args[nb_oargs + nb_iargs + 1]
-                  & (TCG_CALL_NO_READ_GLOBALS | TCG_CALL_NO_WRITE_GLOBALS))) {
-                for (i = 0; i < nb_globals; i++) {
-                    if (test_bit(i, temps_used.l)) {
-                        reset_temp(i);
-                    }
-                }
-            }
-            goto do_reset_output;
-
-        default:
-        do_default:
-            /* Default case: we know nothing about operation (or were unable
-               to compute the operation result) so no propagation is done.
-               We trash everything if the operation is the end of a basic
-               block, otherwise we only trash the output args.  "mask" is
-               the non-zero bits mask for the first output arg.  */
-            if (def->flags & TCG_OPF_BB_END) {
-                reset_all_temps(nb_temps);
-            } else {
-        do_reset_output:
-                for (i = 0; i < nb_oargs; i++) {
-                    reset_temp(args[i]);
-                    /* Save the corresponding known-zero bits mask for the
-                       first output argument (only one supported so far). */
-                    if (i == 0) {
-                        temps[args[i]].mask = mask;
-                    }
-                }
-            }
-            break;
-        }
-    }
-}