bpf: add -mcpu=v3 to support 32-bit alu ops

Fixes JIT on 32-bit ARM and improves performance

Signed-off-by: Felix Fietkau <[email protected]>

include/bpf.mk

@@ -76,7 +76,7 @@ define CompileBPF
 		-c $(1) -o $(patsubst %.c,%.bc,$(1))
 	$(LLVM_OPT) -O2 -mtriple=$(BPF_TARGET) < $(patsubst %.c,%.bc,$(1)) > $(patsubst %.c,%.opt,$(1))
 	$(LLVM_DIS) < $(patsubst %.c,%.opt,$(1)) > $(patsubst %.c,%.S,$(1))
-	$(LLVM_LLC) -march=$(BPF_TARGET) -filetype=obj -o $(patsubst %.c,%.o,$(1)) < $(patsubst %.c,%.S,$(1))
+	$(LLVM_LLC) -march=$(BPF_TARGET) -mcpu=v3 -filetype=obj -o $(patsubst %.c,%.o,$(1)) < $(patsubst %.c,%.S,$(1))
 	$(CP) $(patsubst %.c,%.o,$(1)) $(patsubst %.c,%.debug.o,$(1))
 	$(LLVM_STRIP) --strip-debug $(patsubst %.c,%.o,$(1))
 endef