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Use reg1 in GEN_COUNTER_INC to avoid clobbering RAX

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Alan Wu 2021-08-27 15:41:24 -04:00
parent c210fade27
commit ed85e8a33a
1 changed files with 5 additions and 3 deletions
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8
yjit_codegen.c
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@ -306,9 +306,11 @@ static void
_gen_counter_inc(codeblock_t *cb, int64_t *counter)
{
if (!rb_yjit_opts.gen_stats) return;
mov(cb, REG0, const_ptr_opnd(counter));
cb_write_lock_prefix(cb); // for ractors.
add(cb, mem_opnd(64, REG0, 0), imm_opnd(1));
// Use REG1 because there might be return value in REG0
mov(cb, REG1, const_ptr_opnd(counter));
cb_write_lock_prefix(cb); // for ractors.
add(cb, mem_opnd(64, REG1, 0), imm_opnd(1));
}
// Increment a counter then take an existing side exit.