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Commit 1c7e2378 authored by Sami Tolvanen's avatar Sami Tolvanen
Browse files

ANDROID: x86: add support for CONFIG_LTO_CLANG 



Bug: 133186739
Bug: 145297900
Change-Id: I8e7a8976f9381233f28badc324145b9c4c7eacb0
Signed-off-by: default avatarSami Tolvanen <samitolvanen@google.com>
parent ac2a6090

arch/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -70,6 +70,7 @@ config X86 
	select ARCH_SUPPORTS_ATOMIC_RMW

	select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT

	select ARCH_SUPPORTS_NUMA_BALANCING	if X86_64

	select ARCH_SUPPORTS_LTO_CLANG		if X86_64

	select ARCH_USE_BUILTIN_BSWAP

	select ARCH_USE_QUEUED_RWLOCKS

	select ARCH_USE_QUEUED_SPINLOCKS

arch/x86/Makefile

+5 −0
Original line number Diff line number Diff line
@@ -235,6 +235,11 @@ ifdef CONFIG_X86_64 
LDFLAGS += $(call ld-option, -z max-page-size=0x200000)

endif



ifdef CONFIG_LTO_CLANG

KBUILD_LDFLAGS	+= -plugin-opt=-code-model=kernel \

		   -plugin-opt=-stack-alignment=$(if $(CONFIG_X86_32),4,8)

endif



# Speed up the build

KBUILD_CFLAGS += -pipe

# Workaround for a gcc prelease that unfortunately was shipped in a suse release