From c46202fb34bbf6d1e159c1a1bbdec8a9ec726285 Mon Sep 17 00:00:00 2001 From: Felix Fietkau <nbd@nbd.name> Date: Tue, 21 Dec 2021 00:28:54 +0100 Subject: [PATCH] bpf: add -mcpu=v3 to support 32-bit alu ops Fixes JIT on 32-bit ARM and improves performance Signed-off-by: Felix Fietkau <nbd@nbd.name> --- include/bpf.mk | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/bpf.mk b/include/bpf.mk index 411763c4a2..ce30e24434 100644 --- a/include/bpf.mk +++ b/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