IGF_HAS_REMOVED_INSTR is ARM64 only

src/coreclr/jit/emit.cpp

@@ -8740,12 +8740,14 @@ UNATIVE_OFFSET emitter::emitCodeOffset(void* blockPtr, unsigned codePos)
     {
         of = ig->igSize;
     }
+#ifdef TARGET_ARM64
     else if ((ig->igFlags & IGF_HAS_REMOVED_INSTR) != 0 && no == ig->igInsCnt + 1U)
     {
         // This can happen if a instruction was replaced, but the replacement couldn't fit into
         // the same IG and instead was place in a new IG.
         return ig->igNext->igOffs + emitFindOffset(ig->igNext, 1);
     }
+#endif
     else if (ig->igFlags & IGF_UPD_ISZ)
     {
         /*
@@ -9238,6 +9240,7 @@ void emitter::emitNxtIG(bool extend)
 // NOTE: It is expected that the GC effect of the removed instruction will be handled by the newly
 // generated replacement(s).
 //
+#ifdef TARGET_ARM64
 void emitter::emitRemoveLastInstruction()
 {
     assert(emitLastIns != nullptr);
@@ -9276,6 +9279,7 @@ void emitter::emitRemoveLastInstruction()
     emitLastIns   = nullptr;
     emitLastInsIG = nullptr;
 }
+#endif
 
 /*****************************************************************************
  *

src/coreclr/jit/emit.h

@@ -294,7 +294,9 @@ struct insGroup
 #define IGF_REMOVED_ALIGN 0x0800  // IG was marked as having an alignment instruction(s), but was later unmarked
                                   // without updating the IG's size/offsets.
 #define IGF_HAS_REMOVABLE_JMP 0x1000 // this group ends with an unconditional jump which is a candidate for removal
+#ifdef TARGET_ARM64
 #define IGF_HAS_REMOVED_INSTR 0x2000 // this group has an instruction that was removed.
+#endif
 
 // Mask of IGF_* flags that should be propagated to new blocks when they are created.
 // This allows prologs and epilogs to be any number of IGs, but still be
@@ -2185,7 +2187,9 @@ class emitter
     insGroup* emitSavIG(bool emitAdd = false);
     void emitNxtIG(bool extend = false);
 
+#ifdef TARGET_ARM64
     void emitRemoveLastInstruction();
+#endif
 
     bool emitCurIGnonEmpty()
     {