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Avoid recompiling overlapping instruction sequences in ujit

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Maxime Chevalier-Boisvert 2020-09-17 11:49:53 -04:00 • committed by Alan Wu
parent 1665bbacc1
commit 038f5d964f
4 changed files with 45 additions and 13 deletions
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22
compile.c
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@ -862,22 +862,30 @@ rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
{
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
const void * const *table = rb_vm_get_insns_address_table();
unsigned int i;
VALUE *encoded = (VALUE *)iseq->body->iseq_encoded;
for (i = 0; i < iseq->body->iseq_size; /* */ )
unsigned int insn_idx;
unsigned int next_ujit_idx = 0;
bool ujit_disabled = false /*get_cmdline_flag()*/;
for (insn_idx = 0; insn_idx < iseq->body->iseq_size; /* */)
{
int insn = (int)iseq->body->iseq_encoded[i];
int insn = (int)iseq->body->iseq_encoded[insn_idx];
int len = insn_len(insn);
uint8_t* native_code_ptr = ujit_compile_insn(iseq, i);
uint8_t* native_code_ptr = NULL;
// If ujit is enabled and hasn't already compiled this instruction
if (!ujit_disabled && insn_idx >= next_ujit_idx)
native_code_ptr = ujit_compile_insn(iseq, insn_idx, &next_ujit_idx);
if (native_code_ptr)
encoded[i] = (VALUE)native_code_ptr;
encoded[insn_idx] = (VALUE)native_code_ptr;
else
encoded[i] = (VALUE)table[insn];
encoded[insn_idx] = (VALUE)table[insn];
i += len;
insn_idx += len;
}
FL_SET((VALUE)iseq, ISEQ_TRANSLATED);