also eliminate let-alias ref in the first pass

Author: bobzhang

jscomp/Makefile

@@ -203,7 +203,9 @@ CORE_SRCS= type_int_to_string type_util  ocaml_stdlib_slots bs_conditional_initi
 	lam_stats_export lam_pass_alpha_conversion lam_pass_collect js_program_loader js_dump js_pass_debug\
 	js_of_lam_option js_output lam_compile_global lam_dispatch_primitive lam_beta_reduce\
 	lam_compile_external_call lam_compile_primitive lam_compile lam_pass_exits\
-	lam_pass_lets_dce lam_pass_remove_alias lam_compile_group\
+	lam_pass_count\
+	lam_pass_lets_dce \
+	lam_pass_remove_alias lam_compile_group\
 	js_implementation ocaml_batch_compile
 CORE_CMXS=$(addprefix core/, $(addsuffix .cmx, $(CORE_SRCS)))
 

jscomp/all.depend

@@ -273,7 +273,8 @@ core/lam_stats_util.cmi : core/lam_stats.cmi core/lam.cmi
 core/lam_stats_export.cmi : core/lam_stats.cmi core/lam_module_ident.cmi \
     core/lam.cmi core/js_cmj_format.cmi ext/ident_map.cmi
 core/lam_pass_alpha_conversion.cmi : core/lam_stats.cmi core/lam.cmi
-core/lam_pass_collect.cmi : core/lam_stats.cmi core/lam.cmi
+core/lam_pass_collect.cmi : core/lam_stats.cmi core/lam.cmi \
+    ext/ident_set.cmi
 core/js_program_loader.cmi : core/lam_module_ident.cmi core/j.cmx
 core/js_dump.cmi : core/lam_module_ident.cmi core/j.cmx ext/ext_pp.cmi
 core/js_pass_debug.cmi : core/j.cmx
@@ -290,6 +291,7 @@ core/lam_compile_primitive.cmi : core/lam_compile_defs.cmi core/lam.cmi \
 core/lam_compile.cmi : core/lam_compile_defs.cmi core/lam.cmi \
     core/js_output.cmi core/j.cmx
 core/lam_pass_exits.cmi : core/lam.cmi ext/int_hashtbl.cmi
+core/lam_pass_count.cmi : core/lam.cmi ext/ident_hashtbl.cmi
 core/lam_pass_lets_dce.cmi : core/lam.cmi
 core/lam_pass_remove_alias.cmi : core/lam_stats.cmi core/lam.cmi
 core/lam_compile_group.cmi : core/j.cmx
@@ -488,9 +490,13 @@ core/lam_compile.cmx : ext/literals.cmx core/lam_util.cmx \
 core/lam_pass_exits.cmx : core/lam_util.cmx core/lam_beta_reduce.cmx \
     core/lam_analysis.cmx core/lam.cmx ext/int_hashtbl.cmx ext/ident_map.cmx \
     core/lam_pass_exits.cmi
-core/lam_pass_lets_dce.cmx : core/lam_util.cmx core/lam_beta_reduce.cmx \
-    core/lam_analysis.cmx core/lam.cmx ext/ident_set.cmx ext/ident_map.cmx \
-    ext/ident_hashtbl.cmx ext/ext_list.cmx core/lam_pass_lets_dce.cmi
+core/lam_pass_count.cmx : core/lam_beta_reduce.cmx core/lam.cmx \
+    ext/ident_map.cmx ext/ident_hashtbl.cmx ext/ext_list.cmx \
+    core/lam_pass_count.cmi
+core/lam_pass_lets_dce.cmx : core/lam_util.cmx core/lam_pass_count.cmx \
+    core/lam_beta_reduce.cmx core/lam_analysis.cmx core/lam.cmx \
+    ext/ident_set.cmx ext/ident_hashtbl.cmx ext/ext_list.cmx \
+    core/lam_pass_lets_dce.cmi
 core/lam_pass_remove_alias.cmx : core/lam_util.cmx core/lam_stats.cmx \
     core/lam_module_ident.cmx core/lam_inline_util.cmx \
     core/lam_compile_env.cmx core/lam_closure.cmx core/lam_beta_reduce.cmx \

jscomp/bin/whole_compiler.d

@@ -338,6 +338,8 @@ bin/whole_compiler.ml : ext/int_hashtbl.ml
 bin/whole_compiler.ml : ext/int_hashtbl.mli
 bin/whole_compiler.ml : core/lam_pass_exits.ml
 bin/whole_compiler.ml : core/lam_pass_exits.mli
+bin/whole_compiler.ml : core/lam_pass_count.ml
+bin/whole_compiler.ml : core/lam_pass_count.mli
 bin/whole_compiler.ml : core/lam_pass_lets_dce.ml
 bin/whole_compiler.ml : core/lam_pass_lets_dce.mli
 bin/whole_compiler.ml : core/lam_inline_util.ml