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Remove live ranges

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This commit is contained in:
Dmitry Stogov
2017-07-19 13:06:25 +03:00
parent ecb67e59d7
commit 5274cefb4d
1 changed files with 4 additions and 0 deletions
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ext/opcache/Optimizer/block_pass.c
+4
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@@ -182,6 +182,7 @@ static void zend_optimize_block(zend_basic_block *block, zend_op_array *op_array
) {
znode_op op1 = opline->op1;
if (opline->opcode == ZEND_VERIFY_RETURN_TYPE) {
zend_optimizer_remove_live_range(op_array, op1.var);
COPY_NODE(opline->result, opline->op1);
COPY_NODE(opline->op1, src->op1);
VAR_SOURCE(op1) = NULL;
@@ -230,6 +231,7 @@ static void zend_optimize_block(zend_basic_block *block, zend_op_array *op_array
src->opcode == ZEND_CAST &&
src->extended_value == IS_STRING) {
/* T = CAST(X, String), ECHO(T) => NOP, ECHO(X) */
zend_optimizer_remove_live_range(op_array, opline->op1.var);
VAR_SOURCE(opline->op1) = NULL;
COPY_NODE(opline->op1, src->op1);
MAKE_NOP(src);
@@ -650,6 +652,7 @@ static void zend_optimize_block(zend_basic_block *block, zend_op_array *op_array
src->opcode == ZEND_CAST &&
src->extended_value == IS_STRING) {
/* convert T1 = CAST(STRING, X), T2 = CONCAT(T1, Y) to T2 = CONCAT(X,Y) */
zend_optimizer_remove_live_range(op_array, opline->op1.var);
VAR_SOURCE(opline->op1) = NULL;
COPY_NODE(opline->op1, src->op1);
MAKE_NOP(src);
@@ -661,6 +664,7 @@ static void zend_optimize_block(zend_basic_block *block, zend_op_array *op_array
src->opcode == ZEND_CAST &&
src->extended_value == IS_STRING) {
/* convert T1 = CAST(STRING, X), T2 = CONCAT(Y, T1) to T2 = CONCAT(Y,X) */
zend_optimizer_remove_live_range(op_array, opline->op2.var);
zend_op *src = VAR_SOURCE(opline->op2);
VAR_SOURCE(opline->op2) = NULL;
COPY_NODE(opline->op2, src->op1);