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ANDROID: x86, build: allow LTO_CLANG and THINLTO to be selected

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Allow CONFIG_LTO_CLANG and CONFIG_THINLTO to be enabled.

Bug: 145297900
Change-Id: I70ec9d9e897622e8f4810d06186da981fae2d59e
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Sami Tolvanen
2019-04-10 14:17:20 -07:00
parent 8e1a228356
commit 9145ef459e
2 changed files with 7 additions and 0 deletions
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2
arch/x86/Kconfig
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@@ -89,6 +89,8 @@ config X86
select ARCH_SUPPORTS_ACPI
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_NUMA_BALANCING if X86_64
select ARCH_SUPPORTS_LTO_CLANG if X86_64
select ARCH_SUPPORTS_THINLTO if X86_64
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_USE_QUEUED_SPINLOCKS

5
arch/x86/Makefile
View File

@@ -209,6 +209,11 @@ ifdef CONFIG_X86_64
KBUILD_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
# Workaround for a gcc prelease that unfortunately was shipped in a suse release
KBUILD_CFLAGS += -Wno-sign-compare
#