Noticed this issue when I am trying to backport: https://bugs.openjdk.java.net/browse/JDK-8263425

Around line 180 we have:

         __ add(index, LIR_OprFact::intptrConst(large_disp), tmp);
         index = tmp;
       } else {
         __ move(tmp, LIR_OprFact::intptrConst(large_disp)); <========
         __ add(tmp, index, tmp);
         index = tmp;
       }

This is supposed to be calculating "tmp = large_disp" but it actually does "large_disp = tmp".
Looks like this is missed by JDK-8263425.

Proposed patch:
diff --git a/src/hotspot/cpu/aarch64/c1_LIRGenerator_aarch64.cpp b/src/hotspot/cpu/aarch64/c1_LIRGenerator_aarch64.cpp
index 0056e4c7d36..a6c6dbe856f 100644
--- a/src/hotspot/cpu/aarch64/c1_LIRGenerator_aarch64.cpp
+++ b/src/hotspot/cpu/aarch64/c1_LIRGenerator_aarch64.cpp
@@ -177,7 +177,7 @@ LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index,
         __ add(index, LIR_OprFact::intptrConst(large_disp), tmp);
         index = tmp;
       } else {
- __ move(tmp, LIR_OprFact::intptrConst(large_disp));
+ __ move(LIR_OprFact::intptrConst(large_disp), tmp);
         __ add(tmp, index, tmp);
         index = tmp;
       }