fix(dnn/gi): remove lvaule reference and mednn macro in gi_common and gi_float16 to use it in C

GitOrigin-RevId: e191a254602eb41f3577e4c80a74826b7170a9f8

dnn/src/fallback/general_intrinsic/gi_common.h

@@ -60,15 +60,15 @@
 #define GI_NEON32_INTRINSICS
 #endif
 #elif defined(GI_TARGET_X86)
-//#if defined(__FMA__)
-//#define GI_FMA_INTRINSICS
-//#define GI_AVX2_INTRINSICS
-//#define GI_AVX_INTRINSICS
-//#elif defined(__AVX2__)
-//#define GI_AVX2_INTRINSICS
-//#define GI_AVX_INTRINSICS
-//#elif defined(__AVX__)
-//#define GI_AVX_INTRINSICS
+// #if defined(__FMA__)
+// #define GI_FMA_INTRINSICS
+// #define GI_AVX2_INTRINSICS
+// #define GI_AVX_INTRINSICS
+// #elif defined(__AVX2__)
+// #define GI_AVX2_INTRINSICS
+// #define GI_AVX_INTRINSICS
+// #elif defined(__AVX__)
+// #define GI_AVX_INTRINSICS
 #if defined(__SSE4_2__)
 #define GI_SSE42_INTRINSICS
 #define GI_SSE2_INTRINSICS
@@ -94,7 +94,7 @@
 
 //! Gi fp16 only support arm64 neon and rvv
 #if (defined(GI_NEON_INTRINSICS) && __ARM_FEATURE_FP16_VECTOR_ARITHMETIC && \
-     MEGDNN_AARCH64) ||                                                     \
+     defined(__aarch64__)) ||                                               \
         defined(GI_RVV_INTRINSICS)
 #define GI_SUPPORT_F16
 #endif

dnn/src/fallback/general_intrinsic/gi_float16.h

@@ -34,7 +34,7 @@ GI_FLOAT16_t GiLoadBroadcastFloat16(const gi_float16_t* Value) {
 }
 
 GI_FORCEINLINE
-GI_FLOAT32_V2_t GiCastFloat16ToFloat32(const GI_FLOAT16_t& fp16) {
+GI_FLOAT32_V2_t GiCastFloat16ToFloat32(const GI_FLOAT16_t fp16) {
 #if defined(GI_NEON_INTRINSICS)
     GI_FLOAT32_V2_t ret;
     GiSetSubVectorFloat32V2(ret, 0, vcvt_f32_f16(vget_low_f16(fp16)));
@@ -51,7 +51,7 @@ GI_FLOAT32_V2_t GiCastFloat16ToFloat32(const GI_FLOAT16_t& fp16) {
 }
 
 GI_FORCEINLINE
-GI_FLOAT16_t GiCastFloat32ToFloat16(const GI_FLOAT32_t& low, const GI_FLOAT32_t& high) {
+GI_FLOAT16_t GiCastFloat32ToFloat16(const GI_FLOAT32_t low, const GI_FLOAT32_t high) {
 #if defined(GI_NEON_INTRINSICS)
     return vcombine_f16(vcvt_f16_f32(low), vcvt_f16_f32(high));
 #elif defined(GI_RVV_INTRINSICS)