diff --git a/src/backend/x64/emit_x64_vector.cpp b/src/backend/x64/emit_x64_vector.cpp
index 0cfc3e0c..9ca8f0d2 100644
--- a/src/backend/x64/emit_x64_vector.cpp
+++ b/src/backend/x64/emit_x64_vector.cpp
@@ -1460,11 +1460,17 @@ void EmitX64::EmitVectorLogicalShiftLeft8(EmitContext& ctx, IR::Inst* inst) {
     if (shift_amount == 1) {
         code.paddb(result, result);
     } else if (shift_amount > 0) {
-        const u64 replicand = (0xFFULL << shift_amount) & 0xFF;
-        const u64 mask = Common::Replicate(replicand, Common::BitSize<u8>());
+        if (code.HasAVX512_Icelake()) {
+            // Galois 8x8 identity matrix, bit-shifted by the shift-amount
+            const u64 shift_matrix = 0x0102040810204080 >> (shift_amount * 8);
+            code.vgf2p8affineqb(result, result, code.MConst(xword_b, shift_matrix), 0);
+        } else {
+            const u64 replicand = (0xFFULL << shift_amount) & 0xFF;
+            const u64 mask = Common::Replicate(replicand, Common::BitSize<u8>());
 
-        code.psllw(result, shift_amount);
-        code.pand(result, code.MConst(xword, mask, mask));
+            code.psllw(result, shift_amount);
+            code.pand(result, code.MConst(xword, mask, mask));
+        }
     }
 
     ctx.reg_alloc.DefineValue(inst, result);