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

[Finn Plummer via cfe-commits]

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@@ -1920,6 +1923,24 @@ bool SPIRVInstructionSelector::selectSign(Register ResVReg,
   return Result;
 }
 
+bool SPIRVInstructionSelector::selectWaveActiveAnyTrue(Register ResVReg,
+                                                       const SPIRVType *ResType,
+                                                       MachineInstr &I) const {
+  assert(I.getNumOperands() == 3);
+  assert(I.getOperand(2).isReg());
+
+  // IntTy is used to define the execution scope, set to 3 to denote a
+  // cross-lane interaction equivalent to a SPIR-V subgroup.
+  MachineBasicBlock &BB = *I.getParent();
+  SPIRVType *IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
+
+  return BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpGroupNonUniformAny))
+      .addDef(ResVReg)
+      .addUse(GR.getSPIRVTypeID(ResType))
+      .addUse(GR.getOrCreateConstInt(3, I, IntTy, TII))
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inbelic wrote:

I think the enumeration here is defined. You can use `SPIRV::Scope::Subgroup` instead of `3`.

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