[AMDGPU] New llvm.amdgcn.wave.id intrinsic (llvm#79325)

This is only valid on targets with architected SGPRs.

Author: jayfoad

llvm/include/llvm/IR/IntrinsicsAMDGPU.td

@@ -2648,6 +2648,10 @@ def int_amdgcn_global_load_tr_b128 : AMDGPULoadIntrinsic<global_ptr_ty>;
 def int_amdgcn_wave_id :
   DefaultAttrsIntrinsic<[llvm_i32_ty], [], [NoUndef<RetIndex>, IntrNoMem, IntrSpeculatable]>;
 
+// i32 @llvm.amdgcn.wave.id()
+def int_amdgcn_wave_id :
+  DefaultAttrsIntrinsic<[llvm_i32_ty], [], [IntrNoMem, IntrSpeculatable]>;
+
 //===----------------------------------------------------------------------===//
 // Deep learning intrinsics.
 //===----------------------------------------------------------------------===//