================
@@ -11,557 +11,614 @@
namespace hlsl {
-__attribute__((availability(shadermodel, introduced = 6.0)))
-__attribute__((clang_builtin_alias(__builtin_hlsl_wave_active_count_bits)))
uint
-WaveActiveCountBits(bool bBit);
+// Note: Functions in this file are sorted alphabetically, then grouped by base
+// element type, and the element types are sorted by size, then singed integer,
+// unsigned integer and floating point. Keeping this ordering consistent will
+// help keep this file manageable as it grows.
+#define _HLSL_BUILTIN_ALIAS(builtin)
\
----------------
llvm-beanz wrote:
It being reserved is the point here. `_<capital letter>` macros are reserved
for use by the compiler. This header is part of the compiler implementation. It
ships with the compiler and is tied to it.
We could alternatively move this definition into the actual compiler code (like
under InitPreprocessor), but that would be harder to maintain. We do similar
things in the `__cuda_*` headers in the parent directory of this header as well
as the target-specific intrinsic headers (see:
https://github.com/llvm/llvm-project/blob/main/clang/lib/Headers/xmmintrin.h#L2076)
https://github.com/llvm/llvm-project/pull/72414
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