diff --git a/compiler/arm/aasmcpu.pas b/compiler/arm/aasmcpu.pas
index 47e5b4055d..a9edcf5a4c 100644
--- a/compiler/arm/aasmcpu.pas
+++ b/compiler/arm/aasmcpu.pas
@@ -901,7 +901,9 @@ implementation
                 result := operand_read;
             //Thumb2
             A_LSL, A_LSR, A_ROR, A_ASR, A_SDIV, A_UDIV, A_MOVW, A_MOVT, A_MLS, A_BFI,
-            A_SMMLA,A_SMMLS:
+            A_QADD,
+            A_PKHTB,A_PKHBT,
+            A_SMMLA,A_SMMLS,A_SMUAD,A_SMUSD:
               if opnr in [0] then
                 result:=operand_write
               else
diff --git a/compiler/arm/aoptcpu.pas b/compiler/arm/aoptcpu.pas
index 06334d1027..ca501bafd2 100644
--- a/compiler/arm/aoptcpu.pas
+++ b/compiler/arm/aoptcpu.pas
@@ -1596,7 +1596,14 @@ Implementation
                 A_ORR,
                 A_MLA,
                 A_MLS,
-                A_MUL:
+                A_MUL,
+                A_QADD,A_QADD16,A_QADD8,
+                A_QSUB,A_QSUB16,A_QSUB8,
+                A_QDADD,A_QDSUB,A_QASX,A_QSAX,
+                A_SHADD16,A_SHADD8,A_UHADD16,A_UHADD8,
+                A_SHSUB16,A_SHSUB8,A_UHSUB16,A_UHSUB8,
+                A_PKHTB,A_PKHBT,
+                A_SMUAD,A_SMUSD:
                   begin
                         {
                           optimize