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authorSeokYeon Hwang <syeon.hwang@samsung.com>2016-09-12 15:41:37 +0900
committerSeokYeon Hwang <syeon.hwang@samsung.com>2016-09-12 15:41:37 +0900
commit590861b31f5f1f7140d637173d8d9bac8d41ccc6 (patch)
tree7e2e5afd3ac4d896b310de7a980c509e6dddfd2b /tcg/tcg.c
parent64d5068524fc31f8941aeba31d6a34f935adf479 (diff)
parent1dc33ed90bf1fe1c2014dffa0d9e863c520d953a (diff)
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Merge tag 'v2.7.0' into develop_qemu_2.7
v2.7.0 release Change-Id: Id5feb5a9404ab064f9ea3d0aa0d95eef17020fa3 Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
Diffstat (limited to 'tcg/tcg.c')
-rw-r--r--tcg/tcg.c768
1 files changed, 492 insertions, 276 deletions
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 8feebc61d6..4620d1439a 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -23,7 +23,6 @@
*/
/* define it to use liveness analysis (better code) */
-#define USE_LIVENESS_ANALYSIS
#define USE_TCG_OPTIMIZATIONS
#include "qemu/osdep.h"
@@ -41,6 +40,11 @@
#define NO_CPU_IO_DEFS
#include "cpu.h"
+#include "qemu/host-utils.h"
+#include "qemu/timer.h"
+#include "exec/cpu-common.h"
+#include "exec/exec-all.h"
+
#include "tcg-op.h"
#if UINTPTR_MAX == UINT32_MAX
@@ -103,6 +107,8 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
const int *const_args);
static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1,
intptr_t arg2);
+static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,
+ TCGReg base, intptr_t ofs);
static void tcg_out_call(TCGContext *s, tcg_insn_unit *target);
static int tcg_target_const_match(tcg_target_long val, TCGType type,
const TCGArgConstraint *arg_ct);
@@ -431,9 +437,9 @@ void tcg_func_start(TCGContext *s)
s->goto_tb_issue_mask = 0;
#endif
- s->gen_first_op_idx = 0;
- s->gen_last_op_idx = -1;
- s->gen_next_op_idx = 0;
+ s->gen_op_buf[0].next = 1;
+ s->gen_op_buf[0].prev = 0;
+ s->gen_next_op_idx = 1;
s->gen_next_parm_idx = 0;
s->be = tcg_malloc(sizeof(TCGBackendData));
@@ -525,8 +531,12 @@ int tcg_global_mem_new_internal(TCGType type, TCGv_ptr base,
#endif
if (!base_ts->fixed_reg) {
- indirect_reg = 1;
+ /* We do not support double-indirect registers. */
+ tcg_debug_assert(!base_ts->indirect_reg);
base_ts->indirect_base = 1;
+ s->nb_indirects += (TCG_TARGET_REG_BITS == 32 && type == TCG_TYPE_I64
+ ? 2 : 1);
+ indirect_reg = 1;
}
if (TCG_TARGET_REG_BITS == 32 && type == TCG_TYPE_I64) {
@@ -552,7 +562,7 @@ int tcg_global_mem_new_internal(TCGType type, TCGv_ptr base,
ts2->mem_offset = offset + (1 - bigendian) * 4;
pstrcpy(buf, sizeof(buf), name);
pstrcat(buf, sizeof(buf), "_1");
- ts->name = strdup(buf);
+ ts2->name = strdup(buf);
} else {
ts->base_type = type;
ts->type = type;
@@ -818,16 +828,16 @@ void tcg_gen_callN(TCGContext *s, void *func, TCGArg ret,
real_args++;
}
#endif
- /* If stack grows up, then we will be placing successive
- arguments at lower addresses, which means we need to
- reverse the order compared to how we would normally
- treat either big or little-endian. For those arguments
- that will wind up in registers, this still works for
- HPPA (the only current STACK_GROWSUP target) since the
- argument registers are *also* allocated in decreasing
- order. If another such target is added, this logic may
- have to get more complicated to differentiate between
- stack arguments and register arguments. */
+ /* If stack grows up, then we will be placing successive
+ arguments at lower addresses, which means we need to
+ reverse the order compared to how we would normally
+ treat either big or little-endian. For those arguments
+ that will wind up in registers, this still works for
+ HPPA (the only current STACK_GROWSUP target) since the
+ argument registers are *also* allocated in decreasing
+ order. If another such target is added, this logic may
+ have to get more complicated to differentiate between
+ stack arguments and register arguments. */
#if defined(HOST_WORDS_BIGENDIAN) != defined(TCG_TARGET_STACK_GROWSUP)
s->gen_opparam_buf[pi++] = args[i] + 1;
s->gen_opparam_buf[pi++] = args[i];
@@ -862,7 +872,7 @@ void tcg_gen_callN(TCGContext *s, void *func, TCGArg ret,
/* Make sure the calli field didn't overflow. */
tcg_debug_assert(s->gen_op_buf[i].calli == real_args);
- s->gen_last_op_idx = i;
+ s->gen_op_buf[0].prev = i;
s->gen_next_op_idx = i + 1;
s->gen_next_parm_idx = pi;
@@ -992,17 +1002,34 @@ static const char * const ldst_name[] =
[MO_BEQ] = "beq",
};
+static const char * const alignment_name[(MO_AMASK >> MO_ASHIFT) + 1] = {
+#ifdef ALIGNED_ONLY
+ [MO_UNALN >> MO_ASHIFT] = "un+",
+ [MO_ALIGN >> MO_ASHIFT] = "",
+#else
+ [MO_UNALN >> MO_ASHIFT] = "",
+ [MO_ALIGN >> MO_ASHIFT] = "al+",
+#endif
+ [MO_ALIGN_2 >> MO_ASHIFT] = "al2+",
+ [MO_ALIGN_4 >> MO_ASHIFT] = "al4+",
+ [MO_ALIGN_8 >> MO_ASHIFT] = "al8+",
+ [MO_ALIGN_16 >> MO_ASHIFT] = "al16+",
+ [MO_ALIGN_32 >> MO_ASHIFT] = "al32+",
+ [MO_ALIGN_64 >> MO_ASHIFT] = "al64+",
+};
+
void tcg_dump_ops(TCGContext *s)
{
char buf[128];
TCGOp *op;
int oi;
- for (oi = s->gen_first_op_idx; oi >= 0; oi = op->next) {
+ for (oi = s->gen_op_buf[0].next; oi != 0; oi = op->next) {
int i, k, nb_oargs, nb_iargs, nb_cargs;
const TCGOpDef *def;
const TCGArg *args;
TCGOpcode c;
+ int col = 0;
op = &s->gen_op_buf[oi];
c = op->opc;
@@ -1010,7 +1037,7 @@ void tcg_dump_ops(TCGContext *s)
args = &s->gen_opparam_buf[op->args];
if (c == INDEX_op_insn_start) {
- qemu_log("%s ----", oi != s->gen_first_op_idx ? "\n" : "");
+ col += qemu_log("%s ----", oi != s->gen_op_buf[0].next ? "\n" : "");
for (i = 0; i < TARGET_INSN_START_WORDS; ++i) {
target_ulong a;
@@ -1019,7 +1046,7 @@ void tcg_dump_ops(TCGContext *s)
#else
a = args[i];
#endif
- qemu_log(" " TARGET_FMT_lx, a);
+ col += qemu_log(" " TARGET_FMT_lx, a);
}
} else if (c == INDEX_op_call) {
/* variable number of arguments */
@@ -1028,12 +1055,12 @@ void tcg_dump_ops(TCGContext *s)
nb_cargs = def->nb_cargs;
/* function name, flags, out args */
- qemu_log(" %s %s,$0x%" TCG_PRIlx ",$%d", def->name,
- tcg_find_helper(s, args[nb_oargs + nb_iargs]),
- args[nb_oargs + nb_iargs + 1], nb_oargs);
+ col += qemu_log(" %s %s,$0x%" TCG_PRIlx ",$%d", def->name,
+ tcg_find_helper(s, args[nb_oargs + nb_iargs]),
+ args[nb_oargs + nb_iargs + 1], nb_oargs);
for (i = 0; i < nb_oargs; i++) {
- qemu_log(",%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
- args[i]));
+ col += qemu_log(",%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
+ args[i]));
}
for (i = 0; i < nb_iargs; i++) {
TCGArg arg = args[nb_oargs + i];
@@ -1041,10 +1068,10 @@ void tcg_dump_ops(TCGContext *s)
if (arg != TCG_CALL_DUMMY_ARG) {
t = tcg_get_arg_str_idx(s, buf, sizeof(buf), arg);
}
- qemu_log(",%s", t);
+ col += qemu_log(",%s", t);
}
} else {
- qemu_log(" %s ", def->name);
+ col += qemu_log(" %s ", def->name);
nb_oargs = def->nb_oargs;
nb_iargs = def->nb_iargs;
@@ -1053,17 +1080,17 @@ void tcg_dump_ops(TCGContext *s)
k = 0;
for (i = 0; i < nb_oargs; i++) {
if (k != 0) {
- qemu_log(",");
+ col += qemu_log(",");
}
- qemu_log("%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
- args[k++]));
+ col += qemu_log("%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
+ args[k++]));
}
for (i = 0; i < nb_iargs; i++) {
if (k != 0) {
- qemu_log(",");
+ col += qemu_log(",");
}
- qemu_log("%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
- args[k++]));
+ col += qemu_log("%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
+ args[k++]));
}
switch (c) {
case INDEX_op_brcond_i32:
@@ -1075,9 +1102,9 @@ void tcg_dump_ops(TCGContext *s)
case INDEX_op_setcond_i64:
case INDEX_op_movcond_i64:
if (args[k] < ARRAY_SIZE(cond_name) && cond_name[args[k]]) {
- qemu_log(",%s", cond_name[args[k++]]);
+ col += qemu_log(",%s", cond_name[args[k++]]);
} else {
- qemu_log(",$0x%" TCG_PRIlx, args[k++]);
+ col += qemu_log(",$0x%" TCG_PRIlx, args[k++]);
}
i = 1;
break;
@@ -1091,18 +1118,12 @@ void tcg_dump_ops(TCGContext *s)
unsigned ix = get_mmuidx(oi);
if (op & ~(MO_AMASK | MO_BSWAP | MO_SSIZE)) {
- qemu_log(",$0x%x,%u", op, ix);
+ col += qemu_log(",$0x%x,%u", op, ix);
} else {
- const char *s_al = "", *s_op;
- if (op & MO_AMASK) {
- if ((op & MO_AMASK) == MO_ALIGN) {
- s_al = "al+";
- } else {
- s_al = "un+";
- }
- }
+ const char *s_al, *s_op;
+ s_al = alignment_name[(op & MO_AMASK) >> MO_ASHIFT];
s_op = ldst_name[op & (MO_BSWAP | MO_SSIZE)];
- qemu_log(",%s%s,%u", s_al, s_op, ix);
+ col += qemu_log(",%s%s,%u", s_al, s_op, ix);
}
i = 1;
}
@@ -1117,14 +1138,39 @@ void tcg_dump_ops(TCGContext *s)
case INDEX_op_brcond_i32:
case INDEX_op_brcond_i64:
case INDEX_op_brcond2_i32:
- qemu_log("%s$L%d", k ? "," : "", arg_label(args[k])->id);
+ col += qemu_log("%s$L%d", k ? "," : "", arg_label(args[k])->id);
i++, k++;
break;
default:
break;
}
for (; i < nb_cargs; i++, k++) {
- qemu_log("%s$0x%" TCG_PRIlx, k ? "," : "", args[k]);
+ col += qemu_log("%s$0x%" TCG_PRIlx, k ? "," : "", args[k]);
+ }
+ }
+ if (op->life) {
+ unsigned life = op->life;
+
+ for (; col < 48; ++col) {
+ putc(' ', qemu_logfile);
+ }
+
+ if (life & (SYNC_ARG * 3)) {
+ qemu_log(" sync:");
+ for (i = 0; i < 2; ++i) {
+ if (life & (SYNC_ARG << i)) {
+ qemu_log(" %d", i);
+ }
+ }
+ }
+ life /= DEAD_ARG;
+ if (life) {
+ qemu_log(" dead:");
+ for (i = 0; life; ++i, life >>= 1) {
+ if (life & 1) {
+ qemu_log(" %d", i);
+ }
+ }
}
}
qemu_log("\n");
@@ -1281,71 +1327,116 @@ void tcg_op_remove(TCGContext *s, TCGOp *op)
int next = op->next;
int prev = op->prev;
- if (next >= 0) {
- s->gen_op_buf[next].prev = prev;
- } else {
- s->gen_last_op_idx = prev;
- }
- if (prev >= 0) {
- s->gen_op_buf[prev].next = next;
- } else {
- s->gen_first_op_idx = next;
- }
+ /* We should never attempt to remove the list terminator. */
+ tcg_debug_assert(op != &s->gen_op_buf[0]);
+
+ s->gen_op_buf[next].prev = prev;
+ s->gen_op_buf[prev].next = next;
- memset(op, -1, sizeof(*op));
+ memset(op, 0, sizeof(*op));
#ifdef CONFIG_PROFILER
s->del_op_count++;
#endif
}
-#ifdef USE_LIVENESS_ANALYSIS
+TCGOp *tcg_op_insert_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
+ };
+ s->gen_op_buf[prev].next = oi;
+ old_op->prev = oi;
+
+ return new_op;
+}
+
+TCGOp *tcg_op_insert_after(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 - s->gen_op_buf;
+ int next = old_op->next;
+ 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
+ };
+ s->gen_op_buf[next].prev = oi;
+ old_op->next = oi;
+
+ return new_op;
+}
+
+#define TS_DEAD 1
+#define TS_MEM 2
+
+#define IS_DEAD_ARG(n) (arg_life & (DEAD_ARG << (n)))
+#define NEED_SYNC_ARG(n) (arg_life & (SYNC_ARG << (n)))
+
/* liveness analysis: end of function: all temps are dead, and globals
should be in memory. */
-static inline void tcg_la_func_end(TCGContext *s, uint8_t *dead_temps,
- uint8_t *mem_temps)
+static inline void tcg_la_func_end(TCGContext *s, uint8_t *temp_state)
{
- memset(dead_temps, 1, s->nb_temps);
- memset(mem_temps, 1, s->nb_globals);
- memset(mem_temps + s->nb_globals, 0, s->nb_temps - s->nb_globals);
+ memset(temp_state, TS_DEAD | TS_MEM, s->nb_globals);
+ memset(temp_state + s->nb_globals, TS_DEAD, s->nb_temps - s->nb_globals);
}
/* liveness analysis: end of basic block: all temps are dead, globals
and local temps should be in memory. */
-static inline void tcg_la_bb_end(TCGContext *s, uint8_t *dead_temps,
- uint8_t *mem_temps)
+static inline void tcg_la_bb_end(TCGContext *s, uint8_t *temp_state)
{
- int i;
+ int i, n;
- memset(dead_temps, 1, s->nb_temps);
- memset(mem_temps, 1, s->nb_globals);
- for(i = s->nb_globals; i < s->nb_temps; i++) {
- mem_temps[i] = s->temps[i].temp_local;
+ tcg_la_func_end(s, temp_state);
+ for (i = s->nb_globals, n = s->nb_temps; i < n; i++) {
+ if (s->temps[i].temp_local) {
+ temp_state[i] |= TS_MEM;
+ }
}
}
-/* Liveness analysis : update the opc_dead_args array to tell if a
+/* Liveness analysis : update the opc_arg_life array to tell if a
given input arguments is dead. Instructions updating dead
temporaries are removed. */
-static void tcg_liveness_analysis(TCGContext *s)
+static void liveness_pass_1(TCGContext *s, uint8_t *temp_state)
{
- uint8_t *dead_temps, *mem_temps;
- int oi, oi_prev, nb_ops;
+ int nb_globals = s->nb_globals;
+ int oi, oi_prev;
- nb_ops = s->gen_next_op_idx;
- s->op_dead_args = tcg_malloc(nb_ops * sizeof(uint16_t));
- s->op_sync_args = tcg_malloc(nb_ops * sizeof(uint8_t));
-
- dead_temps = tcg_malloc(s->nb_temps);
- mem_temps = tcg_malloc(s->nb_temps);
- tcg_la_func_end(s, dead_temps, mem_temps);
+ tcg_la_func_end(s, temp_state);
- for (oi = s->gen_last_op_idx; oi >= 0; oi = oi_prev) {
+ for (oi = s->gen_op_buf[0].prev; oi != 0; oi = oi_prev) {
int i, nb_iargs, nb_oargs;
TCGOpcode opc_new, opc_new2;
bool have_opc_new2;
- uint16_t dead_args;
- uint8_t sync_args;
+ TCGLifeData arg_life = 0;
TCGArg arg;
TCGOp * const op = &s->gen_op_buf[oi];
@@ -1368,7 +1459,7 @@ static void tcg_liveness_analysis(TCGContext *s)
if (call_flags & TCG_CALL_NO_SIDE_EFFECTS) {
for (i = 0; i < nb_oargs; i++) {
arg = args[i];
- if (!dead_temps[arg] || mem_temps[arg]) {
+ if (temp_state[arg] != TS_DEAD) {
goto do_not_remove_call;
}
}
@@ -1377,46 +1468,44 @@ static void tcg_liveness_analysis(TCGContext *s)
do_not_remove_call:
/* output args are dead */
- dead_args = 0;
- sync_args = 0;
for (i = 0; i < nb_oargs; i++) {
arg = args[i];
- if (dead_temps[arg]) {
- dead_args |= (1 << i);
+ if (temp_state[arg] & TS_DEAD) {
+ arg_life |= DEAD_ARG << i;
}
- if (mem_temps[arg]) {
- sync_args |= (1 << i);
+ if (temp_state[arg] & TS_MEM) {
+ arg_life |= SYNC_ARG << i;
}
- dead_temps[arg] = 1;
- mem_temps[arg] = 0;
+ temp_state[arg] = TS_DEAD;
}
- if (!(call_flags & TCG_CALL_NO_READ_GLOBALS)) {
- /* globals should be synced to memory */
- memset(mem_temps, 1, s->nb_globals);
- }
if (!(call_flags & (TCG_CALL_NO_WRITE_GLOBALS |
TCG_CALL_NO_READ_GLOBALS))) {
/* globals should go back to memory */
- memset(dead_temps, 1, s->nb_globals);
+ memset(temp_state, TS_DEAD | TS_MEM, nb_globals);
+ } else if (!(call_flags & TCG_CALL_NO_READ_GLOBALS)) {
+ /* globals should be synced to memory */
+ for (i = 0; i < nb_globals; i++) {
+ temp_state[i] |= TS_MEM;
+ }
}
/* record arguments that die in this helper */
for (i = nb_oargs; i < nb_iargs + nb_oargs; i++) {
arg = args[i];
if (arg != TCG_CALL_DUMMY_ARG) {
- if (dead_temps[arg]) {
- dead_args |= (1 << i);
+ if (temp_state[arg] & TS_DEAD) {
+ arg_life |= DEAD_ARG << i;
}
}
}
/* input arguments are live for preceding opcodes */
- for (i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
+ for (i = nb_oargs; i < nb_iargs + nb_oargs; i++) {
arg = args[i];
- dead_temps[arg] = 0;
+ if (arg != TCG_CALL_DUMMY_ARG) {
+ temp_state[arg] &= ~TS_DEAD;
+ }
}
- s->op_dead_args[oi] = dead_args;
- s->op_sync_args[oi] = sync_args;
}
}
break;
@@ -1424,8 +1513,7 @@ static void tcg_liveness_analysis(TCGContext *s)
break;
case INDEX_op_discard:
/* mark the temporary as dead */
- dead_temps[args[0]] = 1;
- mem_temps[args[0]] = 0;
+ temp_state[args[0]] = TS_DEAD;
break;
case INDEX_op_add2_i32:
@@ -1446,8 +1534,8 @@ static void tcg_liveness_analysis(TCGContext *s)
the low part. The result can be optimized to a simple
add or sub. This happens often for x86_64 guest when the
cpu mode is set to 32 bit. */
- if (dead_temps[args[1]] && !mem_temps[args[1]]) {
- if (dead_temps[args[0]] && !mem_temps[args[0]]) {
+ if (temp_state[args[1]] == TS_DEAD) {
+ if (temp_state[args[0]] == TS_DEAD) {
goto do_remove;
}
/* Replace the opcode and adjust the args in place,
@@ -1484,8 +1572,8 @@ static void tcg_liveness_analysis(TCGContext *s)
do_mul2:
nb_iargs = 2;
nb_oargs = 2;
- if (dead_temps[args[1]] && !mem_temps[args[1]]) {
- if (dead_temps[args[0]] && !mem_temps[args[0]]) {
+ if (temp_state[args[1]] == TS_DEAD) {
+ if (temp_state[args[0]] == TS_DEAD) {
/* Both parts of the operation are dead. */
goto do_remove;
}
@@ -1493,8 +1581,7 @@ static void tcg_liveness_analysis(TCGContext *s)
op->opc = opc = opc_new;
args[1] = args[2];
args[2] = args[3];
- } else if (have_opc_new2 && dead_temps[args[0]]
- && !mem_temps[args[0]]) {
+ } else if (temp_state[args[0]] == TS_DEAD && have_opc_new2) {
/* The low part of the operation is dead; generate the high. */
op->opc = opc = opc_new2;
args[0] = args[1];
@@ -1517,8 +1604,7 @@ static void tcg_liveness_analysis(TCGContext *s)
implies side effects */
if (!(def->flags & TCG_OPF_SIDE_EFFECTS) && nb_oargs != 0) {
for (i = 0; i < nb_oargs; i++) {
- arg = args[i];
- if (!dead_temps[arg] || mem_temps[arg]) {
+ if (temp_state[args[i]] != TS_DEAD) {
goto do_not_remove;
}
}
@@ -1527,59 +1613,203 @@ static void tcg_liveness_analysis(TCGContext *s)
} else {
do_not_remove:
/* output args are dead */
- dead_args = 0;
- sync_args = 0;
for (i = 0; i < nb_oargs; i++) {
arg = args[i];
- if (dead_temps[arg]) {
- dead_args |= (1 << i);
+ if (temp_state[arg] & TS_DEAD) {
+ arg_life |= DEAD_ARG << i;
}
- if (mem_temps[arg]) {
- sync_args |= (1 << i);
+ if (temp_state[arg] & TS_MEM) {
+ arg_life |= SYNC_ARG << i;
}
- dead_temps[arg] = 1;
- mem_temps[arg] = 0;
+ temp_state[arg] = TS_DEAD;
}
/* if end of basic block, update */
if (def->flags & TCG_OPF_BB_END) {
- tcg_la_bb_end(s, dead_temps, mem_temps);
+ tcg_la_bb_end(s, temp_state);
} else if (def->flags & TCG_OPF_SIDE_EFFECTS) {
/* globals should be synced to memory */
- memset(mem_temps, 1, s->nb_globals);
+ for (i = 0; i < nb_globals; i++) {
+ temp_state[i] |= TS_MEM;
+ }
}
/* record arguments that die in this opcode */
for (i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
arg = args[i];
- if (dead_temps[arg]) {
- dead_args |= (1 << i);
+ if (temp_state[arg] & TS_DEAD) {
+ arg_life |= DEAD_ARG << i;
}
}
/* input arguments are live for preceding opcodes */
for (i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
- arg = args[i];
- dead_temps[arg] = 0;
+ temp_state[args[i]] &= ~TS_DEAD;
}
- s->op_dead_args[oi] = dead_args;
- s->op_sync_args[oi] = sync_args;
}
break;
}
+ op->life = arg_life;
}
}
-#else
-/* dummy liveness analysis */
-static void tcg_liveness_analysis(TCGContext *s)
+
+/* Liveness analysis: Convert indirect regs to direct temporaries. */
+static bool liveness_pass_2(TCGContext *s, uint8_t *temp_state)
{
- int nb_ops = s->gen_next_op_idx;
+ int nb_globals = s->nb_globals;
+ int16_t *dir_temps;
+ int i, oi, oi_next;
+ bool changes = false;
+
+ dir_temps = tcg_malloc(nb_globals * sizeof(int16_t));
+ memset(dir_temps, 0, nb_globals * sizeof(int16_t));
+
+ /* Create a temporary for each indirect global. */
+ for (i = 0; i < nb_globals; ++i) {
+ TCGTemp *its = &s->temps[i];
+ if (its->indirect_reg) {
+ TCGTemp *dts = tcg_temp_alloc(s);
+ dts->type = its->type;
+ dts->base_type = its->base_type;
+ dir_temps[i] = temp_idx(s, dts);
+ }
+ }
+
+ memset(temp_state, TS_DEAD, nb_globals);
+
+ for (oi = s->gen_op_buf[0].next; oi != 0; oi = oi_next) {
+ TCGOp *op = &s->gen_op_buf[oi];
+ TCGArg *args = &s->gen_opparam_buf[op->args];
+ TCGOpcode opc = op->opc;
+ const TCGOpDef *def = &tcg_op_defs[opc];
+ TCGLifeData arg_life = op->life;
+ int nb_iargs, nb_oargs, call_flags;
+ TCGArg arg, dir;
+
+ oi_next = op->next;
+
+ if (opc == INDEX_op_call) {
+ nb_oargs = op->callo;
+ nb_iargs = op->calli;
+ call_flags = args[nb_oargs + nb_iargs + 1];
+ } else {
+ nb_iargs = def->nb_iargs;
+ nb_oargs = def->nb_oargs;
+
+ /* Set flags similar to how calls require. */
+ if (def->flags & TCG_OPF_BB_END) {
+ /* Like writing globals: save_globals */
+ call_flags = 0;
+ } else if (def->flags & TCG_OPF_SIDE_EFFECTS) {
+ /* Like reading globals: sync_globals */
+ call_flags = TCG_CALL_NO_WRITE_GLOBALS;
+ } else {
+ /* No effect on globals. */
+ call_flags = (TCG_CALL_NO_READ_GLOBALS |
+ TCG_CALL_NO_WRITE_GLOBALS);
+ }
+ }
+
+ /* Make sure that input arguments are available. */
+ for (i = nb_oargs; i < nb_iargs + nb_oargs; i++) {
+ arg = args[i];
+ /* Note this unsigned test catches TCG_CALL_ARG_DUMMY too. */
+ if (arg < nb_globals) {
+ dir = dir_temps[arg];
+ if (dir != 0 && temp_state[arg] == TS_DEAD) {
+ TCGTemp *its = &s->temps[arg];
+ TCGOpcode lopc = (its->type == TCG_TYPE_I32
+ ? INDEX_op_ld_i32
+ : INDEX_op_ld_i64);
+ TCGOp *lop = tcg_op_insert_before(s, op, lopc, 3);
+ TCGArg *largs = &s->gen_opparam_buf[lop->args];
+
+ largs[0] = dir;
+ largs[1] = temp_idx(s, its->mem_base);
+ largs[2] = its->mem_offset;
+
+ /* Loaded, but synced with memory. */
+ temp_state[arg] = TS_MEM;
+ }
+ }
+ }
+
+ /* Perform input replacement, and mark inputs that became dead.
+ No action is required except keeping temp_state up to date
+ so that we reload when needed. */
+ for (i = nb_oargs; i < nb_iargs + nb_oargs; i++) {
+ arg = args[i];
+ if (arg < nb_globals) {
+ dir = dir_temps[arg];
+ if (dir != 0) {
+ args[i] = dir;
+ changes = true;
+ if (IS_DEAD_ARG(i)) {
+ temp_state[arg] = TS_DEAD;
+ }
+ }
+ }
+ }
+
+ /* Liveness analysis should ensure that the following are
+ all correct, for call sites and basic block end points. */
+ if (call_flags & TCG_CALL_NO_READ_GLOBALS) {
+ /* Nothing to do */
+ } else if (call_flags & TCG_CALL_NO_WRITE_GLOBALS) {
+ for (i = 0; i < nb_globals; ++i) {
+ /* Liveness should see that globals are synced back,
+ that is, either TS_DEAD or TS_MEM. */
+ tcg_debug_assert(dir_temps[i] == 0
+ || temp_state[i] != 0);
+ }
+ } else {
+ for (i = 0; i < nb_globals; ++i) {
+ /* Liveness should see that globals are saved back,
+ that is, TS_DEAD, waiting to be reloaded. */
+ tcg_debug_assert(dir_temps[i] == 0
+ || temp_state[i] == TS_DEAD);
+ }
+ }
+
+ /* Outputs become available. */
+ for (i = 0; i < nb_oargs; i++) {
+ arg = args[i];
+ if (arg >= nb_globals) {
+ continue;
+ }
+ dir = dir_temps[arg];
+ if (dir == 0) {
+ continue;
+ }
+ args[i] = dir;
+ changes = true;
+
+ /* The output is now live and modified. */
+ temp_state[arg] = 0;
+
+ /* Sync outputs upon their last write. */
+ if (NEED_SYNC_ARG(i)) {
+ TCGTemp *its = &s->temps[arg];
+ TCGOpcode sopc = (its->type == TCG_TYPE_I32
+ ? INDEX_op_st_i32
+ : INDEX_op_st_i64);
+ TCGOp *sop = tcg_op_insert_after(s, op, sopc, 3);
+ TCGArg *sargs = &s->gen_opparam_buf[sop->args];
+
+ sargs[0] = dir;
+ sargs[1] = temp_idx(s, its->mem_base);
+ sargs[2] = its->mem_offset;
+
+ temp_state[arg] = TS_MEM;
+ }
+ /* Drop outputs that are dead. */
+ if (IS_DEAD_ARG(i)) {
+ temp_state[arg] = TS_DEAD;
+ }
+ }
+ }
- s->op_dead_args = tcg_malloc(nb_ops * sizeof(uint16_t));
- memset(s->op_dead_args, 0, nb_ops * sizeof(uint16_t));
- s->op_sync_args = tcg_malloc(nb_ops * sizeof(uint8_t));
- memset(s->op_sync_args, 0, nb_ops * sizeof(uint8_t));
+ return changes;
}
-#endif
#ifdef CONFIG_DEBUG_TCG
static void dump_regs(TCGContext *s)
@@ -1675,35 +1905,81 @@ static void temp_allocate_frame(TCGContext *s, int temp)
static void temp_load(TCGContext *, TCGTemp *, TCGRegSet, TCGRegSet);
-/* sync register 'reg' by saving it to the corresponding temporary */
-static void tcg_reg_sync(TCGContext *s, TCGReg reg, TCGRegSet allocated_regs)
+/* Mark a temporary as free or dead. If 'free_or_dead' is negative,
+ mark it free; otherwise mark it dead. */
+static void temp_free_or_dead(TCGContext *s, TCGTemp *ts, int free_or_dead)
{
- TCGTemp *ts = s->reg_to_temp[reg];
+ if (ts->fixed_reg) {
+ return;
+ }
+ if (ts->val_type == TEMP_VAL_REG) {
+ s->reg_to_temp[ts->reg] = NULL;
+ }
+ ts->val_type = (free_or_dead < 0
+ || ts->temp_local
+ || temp_idx(s, ts) < s->nb_globals
+ ? TEMP_VAL_MEM : TEMP_VAL_DEAD);
+}
- tcg_debug_assert(ts->val_type == TEMP_VAL_REG);
- if (!ts->mem_coherent && !ts->fixed_reg) {
+/* Mark a temporary as dead. */
+static inline void temp_dead(TCGContext *s, TCGTemp *ts)
+{
+ temp_free_or_dead(s, ts, 1);
+}
+
+/* Sync a temporary to memory. 'allocated_regs' is used in case a temporary
+ registers needs to be allocated to store a constant. If 'free_or_dead'
+ is non-zero, subsequently release the temporary; if it is positive, the
+ temp is dead; if it is negative, the temp is free. */
+static void temp_sync(TCGContext *s, TCGTemp *ts,
+ TCGRegSet allocated_regs, int free_or_dead)
+{
+ if (ts->fixed_reg) {
+ return;
+ }
+ if (!ts->mem_coherent) {
if (!ts->mem_allocated) {
temp_allocate_frame(s, temp_idx(s, ts));
- } else if (ts->indirect_reg) {
- tcg_regset_set_reg(allocated_regs, ts->reg);
- temp_load(s, ts->mem_base,
- tcg_target_available_regs[TCG_TYPE_PTR],
+ }
+ switch (ts->val_type) {
+ case TEMP_VAL_CONST:
+ /* If we're going to free the temp immediately, then we won't
+ require it later in a register, so attempt to store the
+ constant to memory directly. */
+ if (free_or_dead
+ && tcg_out_sti(s, ts->type, ts->val,
+ ts->mem_base->reg, ts->mem_offset)) {
+ break;
+ }
+ temp_load(s, ts, tcg_target_available_regs[ts->type],
allocated_regs);
+ /* fallthrough */
+
+ case TEMP_VAL_REG:
+ tcg_out_st(s, ts->type, ts->reg,
+ ts->mem_base->reg, ts->mem_offset);
+ break;
+
+ case TEMP_VAL_MEM:
+ break;
+
+ case TEMP_VAL_DEAD:
+ default:
+ tcg_abort();
}
- tcg_out_st(s, ts->type, reg, ts->mem_base->reg, ts->mem_offset);
+ ts->mem_coherent = 1;
+ }
+ if (free_or_dead) {
+ temp_free_or_dead(s, ts, free_or_dead);
}
- ts->mem_coherent = 1;
}
/* free register 'reg' by spilling the corresponding temporary if necessary */
static void tcg_reg_free(TCGContext *s, TCGReg reg, TCGRegSet allocated_regs)
{
TCGTemp *ts = s->reg_to_temp[reg];
-
if (ts != NULL) {
- tcg_reg_sync(s, reg, allocated_regs);
- ts->val_type = TEMP_VAL_MEM;
- s->reg_to_temp[reg] = NULL;
+ temp_sync(s, ts, allocated_regs, -1);
}
}
@@ -1755,12 +2031,6 @@ static void temp_load(TCGContext *s, TCGTemp *ts, TCGRegSet desired_regs,
break;
case TEMP_VAL_MEM:
reg = tcg_reg_alloc(s, desired_regs, allocated_regs, ts->indirect_base);
- if (ts->indirect_reg) {
- tcg_regset_set_reg(allocated_regs, reg);
- temp_load(s, ts->mem_base,
- tcg_target_available_regs[TCG_TYPE_PTR],
- allocated_regs);
- }
tcg_out_ld(s, ts->type, reg, ts->mem_base->reg, ts->mem_offset);
ts->mem_coherent = 1;
break;
@@ -1773,57 +2043,13 @@ static void temp_load(TCGContext *s, TCGTemp *ts, TCGRegSet desired_regs,
s->reg_to_temp[reg] = ts;
}
-/* mark a temporary as dead. */
-static inline void temp_dead(TCGContext *s, TCGTemp *ts)
-{
- if (ts->fixed_reg) {
- return;
- }
- if (ts->val_type == TEMP_VAL_REG) {
- s->reg_to_temp[ts->reg] = NULL;
- }
- ts->val_type = (temp_idx(s, ts) < s->nb_globals || ts->temp_local
- ? TEMP_VAL_MEM : TEMP_VAL_DEAD);
-}
-
-/* sync a temporary to memory. 'allocated_regs' is used in case a
- temporary registers needs to be allocated to store a constant. */
-static void temp_sync(TCGContext *s, TCGTemp *ts, TCGRegSet allocated_regs)
+/* Save a temporary to memory. 'allocated_regs' is used in case a
+ temporary registers needs to be allocated to store a constant. */
+static void temp_save(TCGContext *s, TCGTemp *ts, TCGRegSet allocated_regs)
{
- if (ts->fixed_reg) {
- return;
- }
- switch (ts->val_type) {
- case TEMP_VAL_CONST:
- temp_load(s, ts, tcg_target_available_regs[ts->type], allocated_regs);
- /* fallthrough */
- case TEMP_VAL_REG:
- tcg_reg_sync(s, ts->reg, allocated_regs);
- break;
- case TEMP_VAL_DEAD:
- case TEMP_VAL_MEM:
- break;
- default:
- tcg_abort();
- }
-}
-
-/* save a temporary to memory. 'allocated_regs' is used in case a
- temporary registers needs to be allocated to store a constant. */
-static inline void temp_save(TCGContext *s, TCGTemp *ts,
- TCGRegSet allocated_regs)
-{
-#ifdef USE_LIVENESS_ANALYSIS
- /* ??? Liveness does not yet incorporate indirect bases. */
- if (!ts->indirect_base) {
- /* The liveness analysis already ensures that globals are back
- in memory. Keep an tcg_debug_assert for safety. */
- tcg_debug_assert(ts->val_type == TEMP_VAL_MEM || ts->fixed_reg);
- return;
- }
-#endif
- temp_sync(s, ts, allocated_regs);
- temp_dead(s, ts);
+ /* The liveness analysis already ensures that globals are back
+ in memory. Keep an tcg_debug_assert for safety. */
+ tcg_debug_assert(ts->val_type == TEMP_VAL_MEM || ts->fixed_reg);
}
/* save globals to their canonical location and assume they can be
@@ -1847,16 +2073,9 @@ static void sync_globals(TCGContext *s, TCGRegSet allocated_regs)
for (i = 0; i < s->nb_globals; i++) {
TCGTemp *ts = &s->temps[i];
-#ifdef USE_LIVENESS_ANALYSIS
- /* ??? Liveness does not yet incorporate indirect bases. */
- if (!ts->indirect_base) {
- tcg_debug_assert(ts->val_type != TEMP_VAL_REG
- || ts->fixed_reg
- || ts->mem_coherent);
- continue;
- }
-#endif
- temp_sync(s, ts, allocated_regs);
+ tcg_debug_assert(ts->val_type != TEMP_VAL_REG
+ || ts->fixed_reg
+ || ts->mem_coherent);
}
}
@@ -1871,27 +2090,17 @@ static void tcg_reg_alloc_bb_end(TCGContext *s, TCGRegSet allocated_regs)
if (ts->temp_local) {
temp_save(s, ts, allocated_regs);
} else {
-#ifdef USE_LIVENESS_ANALYSIS
- /* ??? Liveness does not yet incorporate indirect bases. */
- if (!ts->indirect_base) {
- /* The liveness analysis already ensures that temps are dead.
- Keep an tcg_debug_assert for safety. */
- tcg_debug_assert(ts->val_type == TEMP_VAL_DEAD);
- continue;
- }
-#endif
- temp_dead(s, ts);
+ /* The liveness analysis already ensures that temps are dead.
+ Keep an tcg_debug_assert for safety. */
+ tcg_debug_assert(ts->val_type == TEMP_VAL_DEAD);
}
}
save_globals(s, allocated_regs);
}
-#define IS_DEAD_ARG(n) ((dead_args >> (n)) & 1)
-#define NEED_SYNC_ARG(n) ((sync_args >> (n)) & 1)
-
static void tcg_reg_alloc_movi(TCGContext *s, const TCGArg *args,
- uint16_t dead_args, uint8_t sync_args)
+ TCGLifeData arg_life)
{
TCGTemp *ots;
tcg_target_ulong val;
@@ -1900,28 +2109,27 @@ static void tcg_reg_alloc_movi(TCGContext *s, const TCGArg *args,
val = args[1];
if (ots->fixed_reg) {
- /* for fixed registers, we do not do any constant
- propagation */
+ /* For fixed registers, we do not do any constant propagation. */
tcg_out_movi(s, ots->type, ots->reg, val);
- } else {
- /* The movi is not explicitly generated here */
- if (ots->val_type == TEMP_VAL_REG) {
- s->reg_to_temp[ots->reg] = NULL;
- }
- ots->val_type = TEMP_VAL_CONST;
- ots->val = val;
+ return;
}
- if (NEED_SYNC_ARG(0)) {
- temp_sync(s, ots, s->reserved_regs);
+
+ /* The movi is not explicitly generated here. */
+ if (ots->val_type == TEMP_VAL_REG) {
+ s->reg_to_temp[ots->reg] = NULL;
}
- if (IS_DEAD_ARG(0)) {
+ ots->val_type = TEMP_VAL_CONST;
+ ots->val = val;
+ ots->mem_coherent = 0;
+ if (NEED_SYNC_ARG(0)) {
+ temp_sync(s, ots, s->reserved_regs, IS_DEAD_ARG(0));
+ } else if (IS_DEAD_ARG(0)) {
temp_dead(s, ots);
}
}
static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,
- const TCGArg *args, uint16_t dead_args,
- uint8_t sync_args)
+ const TCGArg *args, TCGLifeData arg_life)
{
TCGRegSet allocated_regs;
TCGTemp *ts, *ots;
@@ -1953,12 +2161,6 @@ static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,
if (!ots->mem_allocated) {
temp_allocate_frame(s, args[0]);
}
- if (ots->indirect_reg) {
- tcg_regset_set_reg(allocated_regs, ts->reg);
- temp_load(s, ots->mem_base,
- tcg_target_available_regs[TCG_TYPE_PTR],
- allocated_regs);
- }
tcg_out_st(s, otype, ts->reg, ots->mem_base->reg, ots->mem_offset);
if (IS_DEAD_ARG(1)) {
temp_dead(s, ts);
@@ -1999,15 +2201,14 @@ static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,
ots->mem_coherent = 0;
s->reg_to_temp[ots->reg] = ots;
if (NEED_SYNC_ARG(0)) {
- tcg_reg_sync(s, ots->reg, allocated_regs);
+ temp_sync(s, ots, allocated_regs, 0);
}
}
}
static void tcg_reg_alloc_op(TCGContext *s,
const TCGOpDef *def, TCGOpcode opc,
- const TCGArg *args, uint16_t dead_args,
- uint8_t sync_args)
+ const TCGArg *args, TCGLifeData arg_life)
{
TCGRegSet allocated_regs;
int i, k, nb_iargs, nb_oargs;
@@ -2158,9 +2359,8 @@ static void tcg_reg_alloc_op(TCGContext *s,
tcg_out_mov(s, ts->type, ts->reg, reg);
}
if (NEED_SYNC_ARG(i)) {
- tcg_reg_sync(s, reg, allocated_regs);
- }
- if (IS_DEAD_ARG(i)) {
+ temp_sync(s, ts, allocated_regs, IS_DEAD_ARG(i));
+ } else if (IS_DEAD_ARG(i)) {
temp_dead(s, ts);
}
}
@@ -2173,8 +2373,7 @@ static void tcg_reg_alloc_op(TCGContext *s,
#endif
static void tcg_reg_alloc_call(TCGContext *s, int nb_oargs, int nb_iargs,
- const TCGArg * const args, uint16_t dead_args,
- uint8_t sync_args)
+ const TCGArg * const args, TCGLifeData arg_life)
{
int flags, nb_regs, i;
TCGReg reg;
@@ -2293,9 +2492,8 @@ static void tcg_reg_alloc_call(TCGContext *s, int nb_oargs, int nb_iargs,
ts->mem_coherent = 0;
s->reg_to_temp[reg] = ts;
if (NEED_SYNC_ARG(i)) {
- tcg_reg_sync(s, reg, allocated_regs);
- }
- if (IS_DEAD_ARG(i)) {
+ temp_sync(s, ts, allocated_regs, IS_DEAD_ARG(i));
+ } else if (IS_DEAD_ARG(i)) {
temp_dead(s, ts);
}
}
@@ -2331,7 +2529,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
{
int n;
- n = s->gen_last_op_idx + 1;
+ n = s->gen_op_buf[0].prev + 1;
s->op_count += n;
if (n > s->op_count_max) {
s->op_count_max = n;
@@ -2367,7 +2565,27 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
s->la_time -= profile_getclock();
#endif
- tcg_liveness_analysis(s);
+ {
+ uint8_t *temp_state = tcg_malloc(s->nb_temps + s->nb_indirects);
+
+ liveness_pass_1(s, temp_state);
+
+ if (s->nb_indirects > 0) {
+#ifdef DEBUG_DISAS
+ if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_IND)
+ && qemu_log_in_addr_range(tb->pc))) {
+ qemu_log("OP before indirect lowering:\n");
+ tcg_dump_ops(s);
+ qemu_log("\n");
+ }
+#endif
+ /* Replace indirect temps with direct temps. */
+ if (liveness_pass_2(s, temp_state)) {
+ /* If changes were made, re-run liveness. */
+ liveness_pass_1(s, temp_state);
+ }
+ }
+ }
#ifdef CONFIG_PROFILER
s->la_time += profile_getclock();
@@ -2390,13 +2608,12 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
tcg_out_tb_init(s);
num_insns = -1;
- for (oi = s->gen_first_op_idx; oi >= 0; oi = oi_next) {
+ for (oi = s->gen_op_buf[0].next; oi != 0; oi = oi_next) {
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];
- uint16_t dead_args = s->op_dead_args[oi];
- uint8_t sync_args = s->op_sync_args[oi];
+ TCGLifeData arg_life = op->life;
oi_next = op->next;
#ifdef CONFIG_PROFILER
@@ -2406,11 +2623,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
switch (opc) {
case INDEX_op_mov_i32:
case INDEX_op_mov_i64:
- tcg_reg_alloc_mov(s, def, args, dead_args, sync_args);
+ tcg_reg_alloc_mov(s, def, args, arg_life);
break;
case INDEX_op_movi_i32:
case INDEX_op_movi_i64:
- tcg_reg_alloc_movi(s, args, dead_args, sync_args);
+ tcg_reg_alloc_movi(s, args, arg_life);
break;
case INDEX_op_insn_start:
if (num_insns >= 0) {
@@ -2435,8 +2652,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
tcg_out_label(s, arg_label(args[0]), s->code_ptr);
break;
case INDEX_op_call:
- tcg_reg_alloc_call(s, op->callo, op->calli, args,
- dead_args, sync_args);
+ tcg_reg_alloc_call(s, op->callo, op->calli, args, arg_life);
break;
default:
/* Sanity check that we've not introduced any unhandled opcodes. */
@@ -2446,7 +2662,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
/* Note: in order to speed up the code, it would be much
faster to have specialized register allocator functions for
some common argument patterns */
- tcg_reg_alloc_op(s, def, opc, args, dead_args, sync_args);
+ tcg_reg_alloc_op(s, def, opc, args, arg_life);
break;
}
#ifdef CONFIG_DEBUG_TCG