Adjust DFG allocation size

Now we need one set less...

diff --git a/ext/opcache/Optimizer/zend_ssa.c b/ext/opcache/Optimizer/zend_ssa.c
index c70ecc52fc6e4ea705110c93df41883e7086082d..b75ae5c576bb40d5951f0bbe54721ef81e47eda8 100644 (file)
--- a/ext/opcache/Optimizer/zend_ssa.c
+++ b/ext/opcache/Optimizer/zend_ssa.c
@@ -782,8 +782,8 @@ int zend_build_ssa(zend_arena **arena, const zend_op_array *op_array, uint32_t b
        /* Compute Variable Liveness */
        dfg.vars = op_array->last_var + op_array->T;
        dfg.size = set_size = zend_bitset_len(dfg.vars);
-       dfg.tmp = do_alloca((set_size * sizeof(zend_ulong)) * (blocks_count * 5 + 1), dfg_use_heap);
-       memset(dfg.tmp, 0, (set_size * sizeof(zend_ulong)) * (blocks_count * 5 + 1));
+       dfg.tmp = do_alloca((set_size * sizeof(zend_ulong)) * (blocks_count * 4 + 1), dfg_use_heap);
+       memset(dfg.tmp, 0, (set_size * sizeof(zend_ulong)) * (blocks_count * 4 + 1));
        dfg.def = dfg.tmp + set_size;
        dfg.use = dfg.def + set_size * blocks_count;
        dfg.in  = dfg.use + set_size * blocks_count;