From: Dmitry Stogov <dmitry@zend.com>
Date: Thu, 17 Mar 2016 06:58:15 +0000 (+0300)
Subject: Change LONG constants into DOUBLE, if they are going to be used as DOUBLE.
X-Git-Tag: php-7.1.0alpha1~471
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3f1e35756ce05c0963cf8d706c1b8d845193c61a;p=php

Change LONG constants into DOUBLE, if they are going to be used as DOUBLE.
---

diff --git a/ext/opcache/Optimizer/dfa_pass.c b/ext/opcache/Optimizer/dfa_pass.c
index 6a346c4846..760e2e6e81 100644
--- a/ext/opcache/Optimizer/dfa_pass.c
+++ b/ext/opcache/Optimizer/dfa_pass.c
@@ -413,27 +413,53 @@ void zend_dfa_optimize_op_array(zend_op_array *op_array, zend_optimizer_ctx *ctx
 	if (ssa->var_info) {
 		int i;
 		zend_op *opline, *end;
-		uint32_t op1_info, op2_info, res_info;
 		zval tmp;
 
 		/* Convert LONG constants to DOUBLE */
 		for (i = 0; i < ssa->vars_count; i++) {
-			if (ssa->var_info[i].use_as_double && ssa->vars[i].definition >= 0) {
+			if (ssa->vars[i].definition >= 0) {
 				int op = ssa->vars[i].definition;
 
 				opline = op_array->opcodes + op;
-				if (opline->opcode == ZEND_ASSIGN &&
-				    opline->op2_type == IS_CONST) {
-					zval *zv = CT_CONSTANT_EX(op_array, opline->op2.constant);
-					ZEND_ASSERT(Z_TYPE_INFO_P(zv) == IS_LONG);
-					ZVAL_DOUBLE(&tmp, zval_get_double(zv));
-					opline->op2.constant = zend_optimizer_add_literal(op_array, &tmp);
-				} else if (opline->opcode == ZEND_QM_ASSIGN &&
-				           opline->op1_type == IS_CONST) {
-					zval *zv = CT_CONSTANT_EX(op_array, opline->op1.constant);
-					ZEND_ASSERT(Z_TYPE_INFO_P(zv) == IS_LONG);
-					ZVAL_DOUBLE(&tmp, zval_get_double(zv));
-					opline->op1.constant = zend_optimizer_add_literal(op_array, &tmp);
+				if (ssa->var_info[i].use_as_double) {
+					if (opline->opcode == ZEND_ASSIGN &&
+				    	opline->op2_type == IS_CONST) {
+						zval *zv = CT_CONSTANT_EX(op_array, opline->op2.constant);
+						ZEND_ASSERT(Z_TYPE_INFO_P(zv) == IS_LONG);
+						ZVAL_DOUBLE(&tmp, zval_get_double(zv));
+						opline->op2.constant = zend_optimizer_add_literal(op_array, &tmp);
+					} else if (opline->opcode == ZEND_QM_ASSIGN &&
+					           opline->op1_type == IS_CONST) {
+						zval *zv = CT_CONSTANT_EX(op_array, opline->op1.constant);
+						ZEND_ASSERT(Z_TYPE_INFO_P(zv) == IS_LONG);
+						ZVAL_DOUBLE(&tmp, zval_get_double(zv));
+						opline->op1.constant = zend_optimizer_add_literal(op_array, &tmp);
+					}
+				} else {
+					if (opline->opcode == ZEND_ADD ||
+					    opline->opcode == ZEND_SUB ||
+					    opline->opcode == ZEND_MUL ||
+					    opline->opcode == ZEND_IS_EQUAL ||
+					    opline->opcode == ZEND_IS_NOT_EQUAL ||
+					    opline->opcode == ZEND_IS_SMALLER ||
+					    opline->opcode == ZEND_IS_SMALLER_OR_EQUAL) {
+						if (opline->op1_type == IS_CONST &&
+						    opline->op2_type != IS_CONST &&
+						    (OP2_INFO() & MAY_BE_ANY) == MAY_BE_DOUBLE &&
+						    Z_TYPE_INFO_P(CT_CONSTANT_EX(op_array, opline->op1.constant)) == IS_LONG) {
+							zval *zv = CT_CONSTANT_EX(op_array, opline->op1.constant);
+							ZVAL_DOUBLE(&tmp, zval_get_double(zv));
+							opline->op1.constant = zend_optimizer_add_literal(op_array, &tmp);
+						} else if (opline->op1_type != IS_CONST &&
+						           opline->op2_type == IS_CONST &&
+						           (OP1_INFO() & MAY_BE_ANY) == MAY_BE_DOUBLE &&
+						           Z_TYPE_INFO_P(CT_CONSTANT_EX(op_array, opline->op2.constant)) == IS_LONG) {
+							zval *zv = CT_CONSTANT_EX(op_array, opline->op2.constant);
+							ZVAL_DOUBLE(&tmp, zval_get_double(zv));
+							opline->op2.constant = zend_optimizer_add_literal(op_array, &tmp);
+						}
+
+					}
 				}
 			}
 		}