I add one new parameter -- the number of concurrently open module files,
and 3 instrumentation timers.
--
Nathan Sidwell
diff --git c/gcc/params.opt w/gcc/params.opt
index 7bac39a9d58..0366584f94e 100644
--- c/gcc/params.opt
+++ w/gcc/params.opt
@@ -349,6 +349,10 @@ Maximal stack frame growth due to inlining (in percent).
Common Joined UInteger Var(param_large_unit_insns) Optimization Init(10000) Param
The size of translation unit to be considered large.
+-param=lazy-modules=
+C++ Joined UInteger Var(param_lazy_modules) Init(32768) Param
+Maximum number of concurrently open C++ module files when lazy loading.
+
-param=lim-expensive=
Common Joined UInteger Var(param_lim_expensive) Init(20) Param Optimization
The minimum cost of an expensive expression in the loop invariant motion.
diff --git c/gcc/timevar.def w/gcc/timevar.def
index 08c21c04009..f2bd58f0f58 100644
--- c/gcc/timevar.def
+++ w/gcc/timevar.def
@@ -145,6 +145,9 @@ DEFTIMEVAR (TV_CONSTEXPR , "constant expression evaluation")
DEFTIMEVAR (TV_CONSTRAINT_NORM , "constraint normalization")
DEFTIMEVAR (TV_CONSTRAINT_SAT , "constraint satisfaction")
DEFTIMEVAR (TV_CONSTRAINT_SUB , "constraint subsumption")
+DEFTIMEVAR (TV_MODULE_IMPORT , "module import")
+DEFTIMEVAR (TV_MODULE_EXPORT , "module export")
+DEFTIMEVAR (TV_MODULE_MAPPER , "module mapper")
DEFTIMEVAR (TV_FLATTEN_INLINING , "flatten inlining")
DEFTIMEVAR (TV_EARLY_INLINING , "early inlining heuristics")
DEFTIMEVAR (TV_INLINE_PARAMETERS , "inline parameters")
