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ggml-cpu: add fp32->fp16

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Signed-off-by: Aaron Teo <aaron.teo1@ibm.com>
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Aaron Teo
2025-06-20 19:10:27 +08:00
parent 8d4a7987f9
commit 0ff0d65162
1 changed files with 11 additions and 2 deletions
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13
ggml/src/ggml-cpu/simd-mappings.h
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@ -922,7 +922,7 @@ static inline void __lsx_f16x4_store(ggml_fp16_t * x, __m128 y) {
#define GGML_F32_STEP 32 #define GGML_F32_STEP 32
#define GGML_F32_EPR 4 #define GGML_F32_EPR 4
#define GGML_F32x4 __vector float #define GGML_F32x4 float32x4_t
#define GGML_F32x4_ZERO vec_splats(0.0f) #define GGML_F32x4_ZERO vec_splats(0.0f)
#define GGML_F32x4_SET1 vec_splats #define GGML_F32x4_SET1 vec_splats
#define GGML_F32x4_LOAD(p) vec_xl(0, p) #define GGML_F32x4_LOAD(p) vec_xl(0, p)
@ -980,7 +980,15 @@ static inline float32x4_t __lzs_f16cx4_load(const ggml_fp16_t * x) {
#endif #endif
} }
static inline void __lzs_f16cx4_store(ggml_fp16_t * x, __vector float y) { static inline void __lzs_f16cx4_store(ggml_fp16_t * x, float32x4_t y) {
#ifdef __NNPA__
float32x4_t zero = vec_splats(0.0f);
uint16x8_t nnpa = vec_round_from_fp32(y, zero, 0);
x[0] = nnpa[0];
x[1] = nnpa[1];
x[2] = nnpa[2];
x[3] = nnpa[3];
#else
float arr[4]; float arr[4];
// note: keep type-cast here to prevent compiler bugs // note: keep type-cast here to prevent compiler bugs
@ -990,6 +998,7 @@ static inline void __lzs_f16cx4_store(ggml_fp16_t * x, __vector float y) {
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
x[i] = GGML_FP32_TO_FP16(arr[i]); x[i] = GGML_FP32_TO_FP16(arr[i]);
} }
#endif
} }
#define GGML_F16_VEC GGML_F32x4 #define GGML_F16_VEC GGML_F32x4