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ggml: fix compilation error s390x (llama/12848)

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* ggml: fixes #12846 compilation error

Signed-off-by: Aaron Teo <aaron.teo1@ibm.com>

Co-authored-by: Aleksei Nikiforov <aleksei.nikiforov@ibm.com>

* ggml: add documentation for code change

Signed-off-by: Aaron Teo <aaron.teo1@ibm.com>

Co-authored-by: Aleksei Nikiforov <aleksei.nikiforov@ibm.com>

* ggml: refactor to type-cast and update documentation

Signed-off-by: Aaron Teo <aaron.teo1@ibm.com>

Co-authored-by: Aleksei Nikiforov <aleksei.nikiforov@ibm.com>

* ggml: update documentation to provide full issue link

Signed-off-by: Aaron Teo <aaron.teo1@ibm.com>

Co-authored-by: Aleksei Nikiforov <aleksei.nikiforov@ibm.com>

---------

Co-authored-by: Aleksei Nikiforov <aleksei.nikiforov@ibm.com>
This commit is contained in:
Aaron Teo 2025-04-11 13:20:07 +08:00 committed by Georgi Gerganov
parent e6410faf99
commit b942f451b6
1 changed files with 6 additions and 2 deletions
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8
ggml/src/ggml-cpu/simd-mappings.h
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@ -855,13 +855,17 @@ static inline __vector float __lzs_f16cx4_load(const ggml_fp16_t * x) {
tmp[i] = GGML_FP16_TO_FP32(x[i]); tmp[i] = GGML_FP16_TO_FP32(x[i]);
} }
return vec_xl(0, tmp); // note: keep type-cast here to prevent compiler bugs
// see: https://github.com/ggml-org/llama.cpp/issues/12846
return vec_xl(0, (const float *)(tmp));
} }
static inline void __lzs_f16cx4_store(ggml_fp16_t * x, __vector float y) { static inline void __lzs_f16cx4_store(ggml_fp16_t * x, __vector float y) {
float arr[4]; float arr[4];
vec_xst(y, 0, arr); // note: keep type-cast here to prevent compiler bugs
// see: https://github.com/ggml-org/llama.cpp/issues/12846
vec_xst(y, 0, (float *)(arr));
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]);