Jonathan Thackray 57754e0965 [AArch64][clang][llvm] Add ACLE Armv9.7 matrix multiply-accumulate intrinsics (#193017) ...

Implement new ACLE matrix multiply-accumulate intrinsics for Armv9.7:

```c
  // 16-bit floating-point matrix multiply-accumulate.
  // Only if __ARM_FEATURE_SVE_B16MM
  // Variant also available for _f16 if (__ARM_FEATURE_SVE2p2 && __ARM_FEATURE_F16MM).
  svbfloat16_t svmmla[_bf16](svbfloat16_t zda, svbfloat16_t zn, svbfloat16_t zm);

  // Half-precision matrix multiply accumulating to single-precision instruction.
  // Requires the +f16f32mm architecture extension.
  float32x4_t vmmlaq_f32_f16(float32x4_t r, float16x8_t a, float16x8_t b);

  // Non-widening half-precision matrix multiply instruction.
  // Requires the +f16mm architecture extension.
  float16x8_t vmmlaq_f16_f16(float16x8_t r, float16x8_t a, float16x8_t b);
```

2026-04-27 15:40:50 +01:00

309 KiB

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