diff --git a/src/intrinsic/llvm.rs b/src/intrinsic/llvm.rs
index 286aa6dab75..ba57e425b0f 100644
--- a/src/intrinsic/llvm.rs
+++ b/src/intrinsic/llvm.rs
@@ -501,7 +501,8 @@ pub fn adjust_intrinsic_arguments<'a, 'b, 'gcc, 'tcx>(
             }
             "__builtin_ia32_rangesd128_mask_round"
             | "__builtin_ia32_rangess128_mask_round"
-            | "__builtin_ia32_reducesd_mask_round" => {
+            | "__builtin_ia32_reducesd_mask_round"
+            | "__builtin_ia32_reducess_mask_round" => {
                 let new_args = args.to_vec();
                 args = vec![
                     new_args[0],
@@ -1061,6 +1062,21 @@ pub fn intrinsic<'gcc, 'tcx>(name: &str, cx: &CodegenCx<'gcc, 'tcx>) -> Function
         "llvm.x86.avx512.mask.reduce.pd.512" => "__builtin_ia32_reducepd512_mask_round",
         "llvm.x86.avx512.mask.reduce.ps.512" => "__builtin_ia32_reduceps512_mask_round",
         "llvm.x86.avx512.mask.reduce.sd" => "__builtin_ia32_reducesd_mask_round",
+        "llvm.x86.avx512.mask.reduce.ss" => "__builtin_ia32_reducess_mask_round",
+        "llvm.x86.avx512.mask.loadu.d.256" => "__builtin_ia32_loaddqusi256_mask",
+        "llvm.x86.avx512.mask.loadu.q.256" => "__builtin_ia32_loaddqudi256_mask",
+        "llvm.x86.avx512.mask.loadu.ps.256" => "__builtin_ia32_loadups256_mask",
+        "llvm.x86.avx512.mask.loadu.pd.256" => "__builtin_ia32_loadupd256_mask",
+        "llvm.x86.avx512.mask.loadu.d.128" => "__builtin_ia32_loaddqusi128_mask",
+        "llvm.x86.avx512.mask.loadu.q.128" => "__builtin_ia32_loaddqudi128_mask",
+        "llvm.x86.avx512.mask.loadu.ps.128" => "__builtin_ia32_loadups128_mask",
+        "llvm.x86.avx512.mask.loadu.pd.128" => "__builtin_ia32_loadupd128_mask",
+        "llvm.x86.avx512.mask.load.d.512" => "__builtin_ia32_movdqa32load512_mask",
+        "llvm.x86.avx512.mask.load.q.512" => "__builtin_ia32_movdqa64load512_mask",
+        "llvm.x86.avx512.mask.load.ps.512" => "__builtin_ia32_loadaps512_mask",
+        "llvm.x86.avx512.mask.load.pd.512" => "__builtin_ia32_loadapd512_mask",
+        "llvm.x86.avx512.mask.load.d.256" => "__builtin_ia32_movdqa32load256_mask",
+        "llvm.x86.avx512.mask.load.q.256" => "__builtin_ia32_movdqa64load256_mask",
 
         // NOTE: this file is generated by https://github.com/GuillaumeGomez/llvmint/blob/master/generate_list.py
         _ => include!("archs.rs"),