Integrate the bfloat type into BiFModule

Integrate the `bfloat` type into BiFModule

Author: aratajew

IGC/BiFModule/Headers/spirv.h

@@ -153,6 +153,13 @@ typedef char __bool4 __attribute__((ext_vector_type(4)));
 typedef char __bool8 __attribute__((ext_vector_type(8)));
 typedef char __bool16 __attribute__((ext_vector_type(16)));
 
+typedef __bf16 bfloat;
+typedef bfloat bfloat2 __attribute__((ext_vector_type(2)));
+typedef bfloat bfloat3 __attribute__((ext_vector_type(3)));
+typedef bfloat bfloat4 __attribute__((ext_vector_type(4)));
+typedef bfloat bfloat8 __attribute__((ext_vector_type(8)));
+typedef bfloat bfloat16 __attribute__((ext_vector_type(16)));
+
 #define INTEL_PIPE_RESERVE_ID_VALID_BIT (1U << 30)
 #define CLK_NULL_RESERVE_ID \
     (__builtin_astype(((void *)(~INTEL_PIPE_RESERVE_ID_VALID_BIT)), __spirv_ReserveId))

IGC/BiFModule/Implementation/include/BiF_Definitions.cl

@@ -132,6 +132,13 @@ SPDX-License-Identifier: MIT
 #define as_double8(x) __builtin_astype((x), double8)
 #define as_double16(x) __builtin_astype((x), double16)
 
+#define as_bfloat(x) __builtin_astype((x), bfloat)
+#define as_bfloat2(x) __builtin_astype((x), bfloat2)
+#define as_bfloat3(x) __builtin_astype((x), bfloat3)
+#define as_bfloat4(x) __builtin_astype((x), bfloat4)
+#define as_bfloat8(x) __builtin_astype((x), bfloat8)
+#define as_bfloat16(x) __builtin_astype((x), bfloat16)
+
 #define ONE_EIGHTY_OVER_PI_DBL   (as_double(0x404CA5DC1A63C1F8)) // 57.295779513082320876798154814105
 #define ONE_EIGHTY_OVER_PI_FLT   (as_float(0x42652EE1))          // 57.295779513082320876798154814105f
 #define ONE_EIGHTY_OVER_PI_HLF   (as_half((ushort)0x5329))       // 57.295779513082320876798154814105h