Commit ad40bdaf authored Dec 23, 2017 by Jason A. Donenfeld Committed by Will Deacon Apr 24, 2018

arm64: support __int128 with clang

Commit fb872273 ("arm64: support __int128 on gcc 5+") added support
for arm64 __int128 with gcc with a version-conditional, but neglected to
enable this for clang, which in fact appears to support aarch64 __int128.
This commit therefore enables it if the compiler is clang, using the
same type of makefile conditional used elsewhere in the tree.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent 9478f192

arch/arm64/Makefile

+4 −0

Original line number	Diff line number	Diff line
		@@ -56,7 +56,11 @@ KBUILD_AFLAGS += $(lseinstr) $(brokengasinst)
		KBUILD_CFLAGS += $(call cc-option,-mabi=lp64)
		KBUILD_AFLAGS += $(call cc-option,-mabi=lp64)

		ifeq ($(cc-name),clang)
		KBUILD_CFLAGS += -DCONFIG_ARCH_SUPPORTS_INT128
		else
		KBUILD_CFLAGS += $(call cc-ifversion, -ge, 0500, -DCONFIG_ARCH_SUPPORTS_INT128)
		endif

		ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
		KBUILD_CPPFLAGS += -mbig-endian