diff options
Diffstat (limited to 'arch/x86/Makefile')
| -rw-r--r-- | arch/x86/Makefile | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 2fda005bb334..57996ee840dd 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -77,6 +77,12 @@ else KBUILD_AFLAGS += -m64 KBUILD_CFLAGS += -m64 + # Align jump targets to 1 byte, not the default 16 bytes: + KBUILD_CFLAGS += -falign-jumps=1 + + # Pack loops tightly as well: + KBUILD_CFLAGS += -falign-loops=1 + # Don't autogenerate traditional x87 instructions KBUILD_CFLAGS += $(call cc-option,-mno-80387) KBUILD_CFLAGS += $(call cc-option,-mno-fp-ret-in-387) @@ -84,6 +90,9 @@ else # Use -mpreferred-stack-boundary=3 if supported. KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=3) + # Use -mskip-rax-setup if supported. + KBUILD_CFLAGS += $(call cc-option,-mskip-rax-setup) + # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu) cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8) cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona) |
