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restore SUPEROPT_GC, SUPEROPT_VM

This commit is contained in:
Dan Halbert 2023-10-12 15:25:28 -04:00
parent a13185bb34
commit 2f391e5679
1 changed files with 14 additions and 0 deletions
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14
py/py.mk
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@ -292,11 +292,25 @@ $(BUILD)/shared/libc/string0.o: CFLAGS += $(CFLAGS_BUILTIN)
# that the function preludes are of a minimal and predictable form.
$(PY_BUILD)/nlr%.o: CFLAGS += -Os
# CIRCUITPY: separate SUPEROPT for gc.o and vm.o
# optimising gc for speed; 5ms down to 4ms on pybv2
ifndef SUPEROPT_GC
SUPEROPT_GC = 1
endif
ifeq ($(SUPEROPT_GC),1)
$(PY_BUILD)/gc.o: CFLAGS += $(CSUPEROPT)
endif
# optimising vm for speed, adds only a small amount to code size but makes a huge difference to speed (20% faster)
ifndef SUPEROPT_VM
SUPEROPT_VM = 1
endif
ifeq ($(SUPEROPT_VM),1)
$(PY_BUILD)/vm.o: CFLAGS += $(CSUPEROPT)
endif
# Optimizing vm.o for modern deeply pipelined CPUs with branch predictors
# may require disabling tail jump optimization. This will make sure that
# each opcode has its own dispatching jump which will improve branch