diff options
Diffstat (limited to 'gcc/tree-object-size.c')
| -rw-r--r-- | gcc/tree-object-size.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/gcc/tree-object-size.c b/gcc/tree-object-size.c index fa3625c..459e65d 100644 --- a/gcc/tree-object-size.c +++ b/gcc/tree-object-size.c @@ -1217,13 +1217,21 @@ class pass_object_sizes : public gimple_opt_pass { public: pass_object_sizes (gcc::context *ctxt) - : gimple_opt_pass (pass_data_object_sizes, ctxt) + : gimple_opt_pass (pass_data_object_sizes, ctxt), insert_min_max_p (false) {} /* opt_pass methods: */ opt_pass * clone () { return new pass_object_sizes (m_ctxt); } + void set_pass_param (unsigned int n, bool param) + { + gcc_assert (n == 0); + insert_min_max_p = param; + } virtual unsigned int execute (function *); + private: + /* Determines whether the pass instance creates MIN/MAX_EXPRs. */ + bool insert_min_max_p; }; // class pass_object_sizes /* Dummy valueize function. */ @@ -1250,12 +1258,12 @@ pass_object_sizes::execute (function *fun) init_object_sizes (); - /* In the first pass instance, only attempt to fold + /* If insert_min_max_p, only attempt to fold __builtin_object_size (x, 1) and __builtin_object_size (x, 3), and rather than folding the builtin to the constant if any, create a MIN_EXPR or MAX_EXPR of the __builtin_object_size call result and the computed constant. */ - if (first_pass_instance) + if (insert_min_max_p) { tree ost = gimple_call_arg (call, 1); if (tree_fits_uhwi_p (ost)) |