diff --git a/include/ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr_iglp.hpp b/include/ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr_iglp.hpp
index 97db0f95c4..34ba8d6c47 100644
--- a/include/ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr_iglp.hpp
+++ b/include/ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr_iglp.hpp
@@ -163,7 +163,9 @@ struct BlockFmhaBwdDQDKDVPipelineKRKTRVRIGLP
             amd_wave_read_first_lane(integer_divide_ceil(seqlen_q_end - seqlen_q_start, kM0));
 
         // check early exit if no work to do.
-        if(num_total_loop <= 0)
+        // __builtin_expect is load-bearing: omitting it causes incorrect AGPR allocation in
+        // the dK/dV accumulation loop on some compiler versions, leading to wrong results.
+        if(__builtin_expect(num_total_loop <= 0, 0))
         {
             // Note: here dk_acc&dv_acc are all cleared, return it
             return make_tuple(dk_acc, dv_acc);