impl xor lane shuffling; add delay option for operand reads

1 files changed, 6 insertions, 0 deletions

diff --git a/src/abstract_hardware_model.h b/src/abstract_hardware_model.h
index 4a655b3..3f7eac3 100644
--- a/src/abstract_hardware_model.h
+++ b/src/abstract_hardware_model.h
@@ -1185,6 +1185,12 @@ class warp_inst_t : public inst_t {
   void compute_simd_sets(unsigned num_sets, unsigned set_width);
   void compute_simd_sets_compacted(unsigned num_sets, unsigned set_width,
                                    unsigned start_set = 0);
+  // Fixed per-warp lane permutation: lane P -> thread (P XOR reverse_bits(warp_id)).
+  // Does NOT repack — only reshuffles lane assignment. start_set is accepted
+  // for API symmetry with compute_simd_sets_compacted but is ignored (XOR
+  // placement is fixed by warp_id).
+  void compute_simd_sets_xor_static(unsigned num_sets, unsigned set_width,
+                                    unsigned start_set = 0);
   const std::vector<simd_set_info> &get_simd_sets() const {
     return m_simd_sets;
   }