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

[Ashley Coleman via cfe-commits]

================
@@ -19108,6 +19108,21 @@ case Builtin::BI__builtin_hlsl_elementwise_isinf: {
         /*ReturnType=*/Op0->getType(), CGM.getHLSLRuntime().getStepIntrinsic(),
         ArrayRef<Value *>{Op0, Op1}, nullptr, "hlsl.step");
   }
+  case Builtin::BI__builtin_hlsl_wave_active_any_true: {
+    IntegerType *Int1Ty =
+        llvm::Type::getInt1Ty(CGM.getTypes().getLLVMContext());
+    Value *Op = EmitScalarExpr(E->getArg(0));
+    assert(Op->getType() == Int1Ty &&
+           "wave_active_any_true operand must be a bool");
+
+    llvm::FunctionType *FT =
----------------
V-FEXrt wrote:

I originally had something like this

```hlsl
  case Builtin::BI__builtin_hlsl_wave_active_any_true: {
    Value *Op = EmitScalarExpr(E->getArg(0));
    return Builder.CreateIntrinsic(
        Op->getType(), 
        CGM.getHLSLRuntime().getWaveActiveAnyTrueIntrinsic(), 
        Op, nullptr, "hlsl.wave.activeanytrue"
    );
  }
```

but that was failing with a convergence error `Cannot mix controlled and uncontrolled convergence in the same function.`. I also though I tried `Intrinsic::getOrInsertDeclaration` but I can't remember what happened with that.  I'll give it another try

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