[clang] [llvm] [HLSL][DXIL][SPIRV] Implementation of an abstraction for intrinsic selection of HLSL backends (PR #87171)

[Nathan Gauër via cfe-commits]

================
@@ -100,6 +100,118 @@ double3 abs(double3);
 _HLSL_BUILTIN_ALIAS(__builtin_elementwise_abs)
 double4 abs(double4);
 
+//===----------------------------------------------------------------------===//
+// all builtins
+//===----------------------------------------------------------------------===//
+
+/// \fn bool all(T x)
+/// \brief Returns True if all components of the \a x parameter are non-zero;
+/// otherwise, false. \param x The input value.
+
+#ifdef __HLSL_ENABLE_16_BIT
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int16_t);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int16_t2);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int16_t3);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int16_t4);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(uint16_t);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(uint16_t2);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(uint16_t3);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(uint16_t4);
+#endif
+
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(half);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(half2);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(half3);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(half4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(bool);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(bool2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(bool3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(bool4);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(uint);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(uint2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(uint3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(uint4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(float);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(float2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(float3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(float4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int64_t);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int64_t2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int64_t3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)
+bool all(int64_t4);
----------------
Keenuts wrote:

Not sure if that's considered cleaner, but could those repetition be avoid with something like:


```cpp
#define _HLSL_ALIAS_BUILTIN_FOR_VECTOR(BuiltIn, BaseType) \
    BuiltIn(BaseType);      \
    BuiltIn(BaseType ## 2); \
    BuiltIn(BaseType ## 3); \
    BuiltIn(BaseType ## 4)
```

Which would be used like so:

```cpp
#define _DEFINE_BUILTIN_HLSL_ELEMENTWISE_ALL(Type)          \
    _HLSL_AVAILABILITY(shadermodel, 6.2)                    \
    _HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_all)     \
    bool all(Type)
_HLSL_ALIAS_BUILTIN_FOR_VECTOR(_DEFINE_BUILTIN_HLSL_ELEMENTWISE_ALL, int);
_HLSL_ALIAS_BUILTIN_FOR_VECTOR(_DEFINE_BUILTIN_HLSL_ELEMENTWISE_ALL, uint);
_HLSL_ALIAS_BUILTIN_FOR_VECTOR(_DEFINE_BUILTIN_HLSL_ELEMENTWISE_ALL, float);
_HLSL_ALIAS_BUILTIN_FOR_VECTOR(_DEFINE_BUILTIN_HLSL_ELEMENTWISE_ALL, double);


#define _DEFINE_BUILTIN_HLSL_ELEMENTWISE_ANY(Type)          \
    _HLSL_AVAILABILITY(shadermodel, 6.2)                    \
    _HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_any)     \
    bool all(Type)
_HLSL_ALIAS_BUILTIN_FOR_VECTOR(_DEFINE_BUILTIN_HLSL_ELEMENTWISE_ANY, int);
_HLSL_ALIAS_BUILTIN_FOR_VECTOR(_DEFINE_BUILTIN_HLSL_ELEMENTWISE_ANY, uint);
_HLSL_ALIAS_BUILTIN_FOR_VECTOR(_DEFINE_BUILTIN_HLSL_ELEMENTWISE_ANY, float);
_HLSL_ALIAS_BUILTIN_FOR_VECTOR(_DEFINE_BUILTIN_HLSL_ELEMENTWISE_ANY, double);
```

https://github.com/llvm/llvm-project/pull/87171