make compile go faster with native caches (#57500)

Not sure why we make sure compile go slow, so make it go fast.

Author: vtjnash

src/staticdata.c

@@ -3654,9 +3654,7 @@ static void jl_restore_system_image_from_stream_(ios_t *f, jl_image_t *image, jl
     htable_new(&new_dt_objs, 0);
     arraylist_new(&deser_sym, 0);
 
-    // in --build mode only use sysimg data, not precompiled native code
-    int imaging_mode = jl_generating_output() && !jl_options.incremental;
-    if (imaging_mode || jl_options.use_sysimage_native_code != JL_OPTIONS_USE_SYSIMAGE_NATIVE_CODE_YES || IMAGE_NATIVE_CODE_TAINTED) {
+    if (jl_options.use_sysimage_native_code != JL_OPTIONS_USE_SYSIMAGE_NATIVE_CODE_YES || IMAGE_NATIVE_CODE_TAINTED) {
         memset(&image->fptrs, 0, sizeof(image->fptrs));
         image->gvars_base = NULL;
         IMAGE_NATIVE_CODE_TAINTED = 1;

sysimage.mk

@@ -71,7 +71,13 @@ $(build_private_libdir)/basecompiler.ji: $(COMPILER_SRCS)
 		--startup-file=no --warn-overwrite=yes -g$(BOOTSTRAP_DEBUG_LEVEL) -O1 Base_compiler.jl --buildroot $(RELBUILDROOT) --dataroot $(RELDATADIR))
 	@mv $@.tmp $@
 
-$(build_private_libdir)/sys.ji: $(build_private_libdir)/basecompiler.ji $(JULIAHOME)/VERSION $(BASE_SRCS) $(STDLIB_SRCS)
+$(build_private_libdir)/basecompiler-o.a $(build_private_libdir)/basecompiler-bc.a: $(build_private_libdir)/basecompiler-%.a : $(COMPILER_SRCS)
+	@$(call PRINT_JULIA, cd $(JULIAHOME)/base && \
+	JULIA_NUM_THREADS=1 $(call spawn,$(JULIA_EXECUTABLE)) -C "$(JULIA_CPU_TARGET)" $(HEAPLIM) --output-$* $(call cygpath_w,$@).tmp \
+		--startup-file=no --warn-overwrite=yes -g$(BOOTSTRAP_DEBUG_LEVEL) -O1 Base_compiler.jl --buildroot $(RELBUILDROOT) --dataroot $(RELDATADIR))
+	@mv $@.tmp $@
+
+$(build_private_libdir)/sys.ji: $(build_private_libdir)/basecompiler.$(SHLIB_EXT) $(JULIAHOME)/VERSION $(BASE_SRCS) $(STDLIB_SRCS)
 	@$(call PRINT_JULIA, cd $(JULIAHOME)/base && \
 	if ! JULIA_BINDIR=$(call cygpath_w,$(build_bindir)) WINEPATH="$(call cygpath_w,$(build_bindir));$$WINEPATH" \
 			JULIA_NUM_THREADS=1 $(call spawn, $(JULIA_EXECUTABLE)) -g1 -O1 -C "$(JULIA_CPU_TARGET)" $(HEAPLIM) --output-ji $(call cygpath_w,$@).tmp $(JULIA_SYSIMG_BUILD_FLAGS) \