From eea986f215e1dc490654d012ccf2ab62fe8f606d Mon Sep 17 00:00:00 2001
From: Georgi Gerganov <ggerganov@gmail.com>
Date: Thu, 28 Nov 2024 14:56:23 +0200
Subject: [PATCH] cmake : fix ARM feature detection (#10543)

ggml-ci
---
 ggml/src/ggml-cpu/CMakeLists.txt | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/ggml/src/ggml-cpu/CMakeLists.txt b/ggml/src/ggml-cpu/CMakeLists.txt
index ddc05ecef..4dbc1f75b 100644
--- a/ggml/src/ggml-cpu/CMakeLists.txt
+++ b/ggml/src/ggml-cpu/CMakeLists.txt
@@ -82,17 +82,23 @@ if (CMAKE_OSX_ARCHITECTURES      STREQUAL "arm64" OR
         check_cxx_source_compiles("#include <arm_neon.h>\nint main() { int8x16_t _a, _b; int32x4_t _s = vdotq_s32(_s, _a, _b); return 0; }" GGML_COMPILER_SUPPORT_DOTPROD)
         if (GGML_COMPILER_SUPPORT_DOTPROD)
             add_compile_definitions(__ARM_FEATURE_DOTPROD)
+
+            message(STATUS "ARM feature DOTPROD enabled")
         endif ()
 
-        check_cxx_source_compiles("#include <arm_neon.h>\nint main() { int8x16_t _a, _b; int32x4_t _s = vmlaq_f32(_s, _a, _b); return 0; }" GGML_COMPILER_SUPPORT_MATMUL_INT8)
+        check_cxx_source_compiles("#include <arm_neon.h>\nint main() { int8x16_t _a, _b; int32x4_t _s = vmmlaq_f32(_s, _a, _b); return 0; }" GGML_COMPILER_SUPPORT_MATMUL_INT8)
 
         if (GGML_COMPILER_SUPPORT_MATMUL_INT8)
             add_compile_definitions(__ARM_FEATURE_MATMUL_INT8)
+
+            message(STATUS "ARM feature MATMUL_INT8 enabled")
         endif ()
 
         check_cxx_source_compiles("#include <arm_neon.h>\nint main() { float16_t _a; float16x8_t _s = vdupq_n_f16(_a); return 0; }" GGML_COMPILER_SUPPORT_FP16_VECTOR_ARITHMETIC)
         if (GGML_COMPILER_SUPPORT_FP16_VECTOR_ARITHMETIC)
             add_compile_definitions(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC)
+
+            message(STATUS "ARM feature FP16_VECTOR_ARITHMETIC enabled")
         endif ()
 
         set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_PREV})
@@ -113,17 +119,23 @@ if (CMAKE_OSX_ARCHITECTURES      STREQUAL "arm64" OR
                 if (GGML_COMPILER_SUPPORT_DOTPROD)
                     set(MARCH_FLAGS "${MARCH_FLAGS}+dotprod")
                     add_compile_definitions(__ARM_FEATURE_DOTPROD)
+
+                    message(STATUS "ARM feature DOTPROD enabled")
                 endif ()
 
                 set(TEST_I8MM_FLAGS "-march=armv8.2a+i8mm")
 
                 set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
-                set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${TEST_I8MM_FLAGS}")
+                set(CMAKE_REQUIRED_FLAGS     "${CMAKE_REQUIRED_FLAGS} ${TEST_I8MM_FLAGS}")
+
                 check_cxx_source_compiles("#include <arm_neon.h>\nint main() { int8x16_t _a, _b; int32x4_t _s = vmmlaq_s32(_s, _a, _b); return 0; }" GGML_COMPILER_SUPPORT_MATMUL_INT8)
                 if (GGML_COMPILER_SUPPORT_MATMUL_INT8)
                     set(MARCH_FLAGS "${MARCH_FLAGS}+i8mm")
                     add_compile_definitions(__ARM_FEATURE_MATMUL_INT8)
+
+                    message(STATUS "ARM feature MATMUL_INT8 enabled")
                 endif ()
+
                 set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})
 
                 list(APPEND ARCH_FLAGS "${MARCH_FLAGS}")