Alpha already provides asm/compiler.h (wrapping uapi/asm/compiler.h)
which defines architecture-specific compiler intrinsics like
__kernel_cmpbge, __kernel_cttz, __kernel_ctlz, and __kernel_ctpop.

Selecting HAVE_ARCH_COMPILER_H causes linux/compiler_types.h to include
asm/compiler.h, making these definitions available consistently.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Matt Turner <mattst88@gmail.com>
---
 arch/alpha/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git ./arch/alpha/Kconfig ./arch/alpha/Kconfig
index 57c91ed67b71..d870529fa251 100644
--- ./arch/alpha/Kconfig
+++ ./arch/alpha/Kconfig
@@ -17,6 +17,7 @@ config ALPHA
 	select PCI_DOMAINS if PCI
 	select PCI_SYSCALL if PCI
 	select HAVE_ARCH_TRACEHOOK
+	select HAVE_ARCH_COMPILER_H
 	select HAVE_ASM_MODVERSIONS
 	select TRACE_IRQFLAGS_SUPPORT
 	select HAVE_PAGE_SIZE_8KB
-- 
2.52.0