From a74b410f5f6bd11ff42cc1f40fa93242d0f67940 Mon Sep 17 00:00:00 2001
From: Ed Addario <eaddario@hotmail.com>
Date: Thu, 25 Sep 2025 19:49:47 +0100
Subject: [PATCH] Move is_iq() into a lambda and remove unused variables

---
 src/llama-quant.cpp | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/src/llama-quant.cpp b/src/llama-quant.cpp
index 0f05c8f956..af564ce03e 100644
--- a/src/llama-quant.cpp
+++ b/src/llama-quant.cpp
@@ -727,11 +727,28 @@ static std::unordered_map<std::string, ggml_type> target_bpw_type(
         return (double)bytes * 8.0 / (double)ggml_nelements(t);
     };
 
-    auto is_compatible = [&](const ggml_tensor * t, const ggml_type typ) -> bool {
+    auto is_compatible = [](const ggml_tensor * t, const ggml_type typ) -> bool {
         const int64_t blck = ggml_blck_size(typ);
         return blck <= 1 || (t->ne[0] % blck) == 0;
     };
 
+    auto is_iq = [](const enum ggml_type t) {
+        switch (t) {
+            case GGML_TYPE_IQ1_S:
+            case GGML_TYPE_IQ1_M:
+            case GGML_TYPE_IQ2_XXS:
+            case GGML_TYPE_IQ2_XS:
+            case GGML_TYPE_IQ2_S:
+            case GGML_TYPE_IQ3_XXS:
+            case GGML_TYPE_IQ3_S:
+            case GGML_TYPE_IQ4_NL:
+            case GGML_TYPE_IQ4_XS:
+                return true;
+            default:
+                return false;
+        }
+    };
+
     auto make_compatible = [&](const ggml_tensor * t, const ggml_type typ) -> ggml_type {
         if (is_compatible(t, typ)) return typ;
         ggml_type fb = fallback_type(typ);
@@ -995,8 +1012,6 @@ static std::unordered_map<std::string, ggml_type> target_bpw_type(
     std::vector<tensor_info> all;
     all.reserve(tensors.size());
     for (const auto * tw : tensors) {
-        std::vector<std::thread> workers;
-        workers.reserve(std::max(1, nthread));
         ggml_tensor * tensor = tw->tensor;
         const std::string name = ggml_get_name(tensor);
         if (!can_quantize(tensor)) { continue; }