dionmoustos/PokemonEmeraldSafariFrontier
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fix aggressive loop optimizations

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Previously, aggressive loop optimizations with a new compiler were not
possible due to undefined behaviour at end of arrays.

A macro "UBFIX" is added to allow ifdefs for fixes which resolve
undefined behavior. For example newer GCC versions will detect various
bugs in the original game code and will otherwise not compile with -Werror.
This commit is contained in:
Michael Panzlaff
2020-05-09 14:49:51 +02:00
parent 46f4a4bbf7
commit 3264cf697f
10 changed files with 79 additions and 45 deletions
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4
Makefile
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@@ -67,7 +67,7 @@ OBJ_DIR := build/emerald
LIBPATH := -L ../../tools/agbcc/lib
else
CC1 = $(shell $(CC) --print-prog-name=cc1) -quiet
override CFLAGS += -mthumb -mthumb-interwork -O2 -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -fno-toplevel-reorder -fno-aggressive-loop-optimizations -Wno-pointer-to-int-cast
override CFLAGS += -mthumb -mthumb-interwork -O2 -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -fno-toplevel-reorder -Wno-pointer-to-int-cast
ROM := pokeemerald_modern.gba
OBJ_DIR := build/modern
LIBPATH := -L "$(dir $(shell $(CC) -mthumb -print-file-name=libgcc.a))" -L "$(dir $(shell $(CC) -mthumb -print-file-name=libc.a))"
@@ -232,7 +232,7 @@ $(C_BUILDDIR)/record_mixing.o: CFLAGS += -ffreestanding
$(C_BUILDDIR)/librfu_intr.o: CC1 := tools/agbcc/bin/agbcc_arm
$(C_BUILDDIR)/librfu_intr.o: CFLAGS := -O2 -mthumb-interwork -quiet
else
$(C_BUILDDIR)/librfu_intr.o: CFLAGS := -mthumb-interwork -O2 -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -fno-toplevel-reorder -fno-aggressive-loop-optimizations -Wno-pointer-to-int-cast
$(C_BUILDDIR)/librfu_intr.o: CFLAGS := -mthumb-interwork -O2 -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -fno-toplevel-reorder -Wno-pointer-to-int-cast
endif
ifeq ($(NODEP),1)