[PATCH 3/3] MIPS: Add support for LTO

[Paul Cercueil]

Allow CONFIG_LTO_CLANG to be enabled. The ThinLTO variant is not yet
supported.

While this option allows to build a LTO'd kernel, the result kernel file
ends up being *bigger* than the non-LTO variant (about 3.6 MiB with LTO
vs. 3.1 MiB without with a ZSTD-compressed kernel).

Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
---
 arch/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 0215dc1529e9..6987db8d5f64 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -22,6 +22,7 @@ config MIPS
 	select ARCH_USE_QUEUED_RWLOCKS
 	select ARCH_USE_QUEUED_SPINLOCKS
 	select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES
+	select ARCH_SUPPORTS_LTO_CLANG if CPU_LITTLE_ENDIAN
 	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select ARCH_WANT_LD_ORPHAN_WARN
-- 
2.33.0