[clang] [llvm] [HLSL] Implement WaveActiveAnyTrue intrinsic (PR #115902)

[Nathan Gauër via cfe-commits]

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@@ -86,6 +86,7 @@ let TargetPrefix = "spv" in {
   def int_spv_dot4add_i8packed : DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
   def int_spv_dot4add_u8packed : DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
   def int_spv_wave_active_countbits : DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_i1_ty], [IntrConvergent, IntrNoMem]>;
+  def int_spv_wave_any : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_i1_ty], [IntrConvergent, IntrNoMem]>;
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Keenuts wrote:

My understanding was `IntrConvergent` prevented optimizations to move this instruction into another control-flow, but could change the order in a given BB/flow, but from the few tests I did, it seems those are not optimized anyway (even dead-stores).
So for now let's go with `IntrConvergent` and `IntrNoMem`, and if we have a repro/issue in the future, we'll know for sure. 

https://github.com/llvm/llvm-project/pull/115902