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Eliminate useless spill stores #19467

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Merged
merged 1 commit into from
Aug 13, 2025
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Eliminate useless spill stores #19467

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5 changes: 5 additions & 0 deletions ext/opcache/jit/zend_jit_ir.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4177,6 +4177,11 @@ static int zend_jit_spill_store_inv(zend_jit_ctx *jit, zend_jit_addr src, zend_j
ZEND_ASSERT(Z_MODE(src) == IS_REG);
ZEND_ASSERT(Z_MODE(dst) == IS_MEM_ZVAL);

if (Z_LOAD(src) || Z_STORE(src)) {
/* it's not necessary to store register if it was previously loaded or already stored */
return 1;
}

if ((info & MAY_BE_ANY) == MAY_BE_LONG) {
jit_set_Z_LVAL(jit, dst, zend_jit_use_reg(jit, src));
if (Z_REG(dst) != ZREG_FP || !JIT_G(current_frame)) {
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