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Dump information about trace side exits

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This commit is contained in:
Dmitry Stogov
2020-04-08 12:39:24 +03:00
parent 6a67067c21
commit 3042b2b201
2 changed files with 56 additions and 1 deletions
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1
ext/opcache/jit/zend_jit.h
View File

@@ -84,6 +84,7 @@
#define ZEND_JIT_DEBUG_TRACE_BLACKLIST (1<<17)
#define ZEND_JIT_DEBUG_TRACE_BYTECODE (1<<18)
#define ZEND_JIT_DEBUG_TRACE_TSSA (1<<19)
#define ZEND_JIT_DEBUG_TRACE_EXIT_INFO (1<<20)
ZEND_EXT_API int zend_jit_op_array(zend_op_array *op_array, zend_script *script);
ZEND_EXT_API int zend_jit_script(zend_script *script);

56
ext/opcache/jit/zend_jit_trace.c
View File

@@ -457,6 +457,7 @@ static zend_ssa *zend_jit_trace_build_ssa(const zend_op_array *op_array, zend_sc
}
static void zend_jit_dump_trace(zend_jit_trace_rec *trace_buffer, zend_ssa *tssa);
static void zend_jit_dump_exit_info(zend_jit_trace_info *t);
static zend_always_inline int zend_jit_trace_op_len(const zend_op *opline)
{
@@ -3168,7 +3169,7 @@ static zend_jit_trace_stop zend_jit_compile_root_trace(zend_jit_trace_rec *trace
{
zend_jit_trace_stop ret;
const void *handler;
zend_jit_trace_info *t;
zend_jit_trace_info *t = NULL;
zend_jit_trace_exit_info exit_info[ZEND_JIT_TRACE_MAX_EXITS];
zend_shared_alloc_lock();
@@ -3260,6 +3261,12 @@ exit:
zend_shared_alloc_unlock();
if ((ZCG(accel_directives).jit_debug & ZEND_JIT_DEBUG_TRACE_EXIT_INFO) != 0
&& ret == ZEND_JIT_TRACE_STOP_COMPILED
&& t->exit_count > 0) {
zend_jit_dump_exit_info(t);
}
return ret;
}
@@ -3499,6 +3506,47 @@ static void zend_jit_dump_trace(zend_jit_trace_rec *trace_buffer, zend_ssa *tssa
}
}
static void zend_jit_dump_exit_info(zend_jit_trace_info *t)
{
int i, j;
fprintf(stderr, "---- TRACE %d exit info\n", t->id);
for (i = 0; i < t->exit_count; i++) {
uint32_t stack_size = t->exit_info[i].stack_size;
zend_jit_trace_stack *stack = t->stack_map + t->exit_info[i].stack_offset;
fprintf(stderr, " exit_%d:", i);
if (t->exit_info[i].opline) {
// TODO: print exit opline number ???
//fprintf(stderr, " %04d/", t->exit_info[i].opline - op_array->opcodes);
fprintf(stderr, " XXXX/");
} else {
fprintf(stderr, " ----/");
}
if (t->exit_info[i].stack_size) {
fprintf(stderr, "%04d/%d", t->exit_info[i].stack_offset, t->exit_info[i].stack_size);
} else {
fprintf(stderr, "----/0");
}
for (j = 0; j < stack_size; j++) {
zend_uchar type = STACK_TYPE(stack, j);
if (type != IS_UNKNOWN) {
// TODO: print CV insted of X ???
fprintf(stderr, " X%d:", j);
if (type == IS_UNDEF) {
fprintf(stderr, "undef");
} else {
fprintf(stderr, "%s", zend_get_type_by_const(type));
if (STACK_REG(stack, j) != ZREG_NONE) {
fprintf(stderr, "(%s)", zend_reg_name[STACK_REG(stack, j)]);
}
}
}
}
fprintf(stderr, "\n");
}
}
int ZEND_FASTCALL zend_jit_trace_hot_root(zend_execute_data *execute_data, const zend_op *opline)
{
const zend_op *orig_opline;
@@ -3771,6 +3819,12 @@ exit:
zend_shared_alloc_unlock();
if ((ZCG(accel_directives).jit_debug & ZEND_JIT_DEBUG_TRACE_EXIT_INFO) != 0
&& ret == ZEND_JIT_TRACE_STOP_COMPILED
&& t->exit_count > 0) {
zend_jit_dump_exit_info(t);
}
return ret;
}