ggml-cpu: Support s390x SIMD Instruction Set (#12019)

* ggml: add s390x ARCH_FLAGS for compilation

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

* ggml: add SIMD for s390x using vector intrinsics

SIMD is activated for:
* ggml_vec_dot_f32
* ggml_vec_dot_f16
* ggml_vec_mad_f32
* ggml_vec_mad_f16
* ggml_vec_mad_f32_unroll
* ggml_vec_scale_f32
* ggml_vec_scale_f16

SIMD is NOT activated for:
* ggml_vec_dot_f16_unroll (pending bugfix)

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

* ggml: fix missing escape character in GGML_F32x4_REDUCE

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

* ggml: add temporary patch for GGML_F32_ARR and GGML_F16_ARR

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

* ggml: fix s390x GGML_F32x4_REDUCE

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

* ggml: full SIMD activation for F32,F16 s390x

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

* ggml: add option to disable s390x VXE/VXE2

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

* ggml: change vecintrin.h include to ggml-cpu-impl

* add __VXE__ and __VXE2__ macros

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

* cmake: add s390x target detection for VX/VXE/VXE2

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

* ggml: move s390x vector intrinsics to ggml-cpu-impl.h

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

* ggml: s390x Q8_0 SIMD

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

* ggml: correct documentation for Q8_0

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

* ggml: s390x reduce code complexity Q8_0

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

* ggml: s390x bugfix typo Q8_0

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

* ggml: s390x SIMD activated for Q4_1

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

* ggml: s390x inline vec_reve

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

* ggml: s390x SIMD activation for Q4_0

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

* ggml: add VXE backend feature

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

* ggml: remove test.py

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

* ggml: s390x SIMD activation for quantize_row_q8_0

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

* ggml: s390x SIMD activation for quantize_row_q8_1

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

* ggml: s390x SIMD activation for iq4_xs

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

* ggml: bugfix iq4_xs

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

* ggml: s390x SIMD activation for iq4_nl

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

* ggml: add float, double, and long vector data type

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

* ggml: clean up iq4_xs SIMD

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

* ggml: fix improper use of restrict keyword

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

* ggml: update warning message for ggml_vec_tbl

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

* ggml: untested implementation of ggml_vec_dot_iq2_xxs_q8_K

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

* ggml: update ggml_vec_dot_q4_1_q8_1 to use typedefs

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

* ggml: switch to restrict for iq4_nl

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

* ggml: slight dot product speed improvement for q4_1_q8_1

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

* ggml: s390x SIMD activation for q6_K

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

* ggml: add missing `_t` to ggml_int8x16x4_t

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

* ggml: fix missing `_t` for ggml_vec_xl_s8x4

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

* ggml: fix more missing `_t`

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

* ggml: add unroll and prefetch to Q8_0

increase of 3.86% for prompt processing and 32.22% for token generation

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

* ggml: patch Q8_0 to use proper vector sizes

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

* ggml: optimise Q8_0 dot prod compute kernel further

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

* ggml: add unroll and prefetch to Q4_1

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

* ggml: refactor Q6_K variable naming for readability

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

* ggml: fix Q6_K typos

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

* ggml: s390x SIMD activation for Q5_K

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

* ggml: fix wrong char*x16_t naming

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

* ggml: Q5_K y0 wrong signness

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

* ggml: fix Q5_K invalid uchar type

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

* ggml: fix Q5_K invalid uchar type

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

* ggml: s390x SIMD activation for Q4_K

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

* ggml: fix Q4_K invalid vector intrinsics

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

* ggml: simplify ggml_padd_s16 compute kernel

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

* ggml: correct ggml-cpu vxe wording

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

* ggml: change ggml_aligned_malloc alignment to 256

256 is the cache line size for s390x platforms

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

* ggml: resolve pr merge via cherry-pick 225bbbf

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

* ggml : fix LoongArch compile error with 128-bit SIMD (#11701)

* ggml: resolve pr merge via cherry-pick 4571953

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

* ggml: cmake remove fork when determining s390x machine type

thank you @ericcurtin

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

---------

Signed-off-by: Aaron Teo <aaron.teo1@ibm.com>
Co-authored-by: Jinyang He <hejinyang@loongson.cn>
Co-authored-by: junchao-zhao <68935141+junchao-loongson@users.noreply.github.com>

ggml/include/ggml-cpu.h

@@ -99,6 +99,7 @@ extern "C" {
     // other
     GGML_BACKEND_API int ggml_cpu_has_riscv_v    (void);
     GGML_BACKEND_API int ggml_cpu_has_vsx        (void);
+    GGML_BACKEND_API int ggml_cpu_has_vxe        (void);
     GGML_BACKEND_API int ggml_cpu_has_wasm_simd  (void);
     GGML_BACKEND_API int ggml_cpu_has_llamafile  (void);