src/hotspot/cpu/aarch64/gc/z/zBarrierSetAssembler_aarch64.cpp

rev 60615 : 8231441: Initial SVE backend support
Reviewed-by: adinn, pli
Contributed-by: joshua.zhu@arm.com, yang.zhang@arm.com, ningsheng.jian@arm.com

@@ -429,12 +429,16 @@
   {
     ZSaveLiveRegisters save_live_registers(masm, stub);
     ZSetupArguments setup_arguments(masm, stub);
     __ mov(rscratch1, stub->slow_path());
     __ blr(rscratch1);
+    if (UseSVE > 0) {
+      // Reinitialize the ptrue predicate register, in case the external runtime
+      // call clobbers ptrue reg, as we may return to SVE compiled code.
+      __ reinitialize_ptrue();
+    }
   }
-
   // Stub exit
   __ b(*stub->continuation());
 }
 
 #undef __