src/cpu/aarch64/vm/macroAssembler_aarch64.cpp

rev 8964 : 8136524: aarch64: test/compiler/runtime/7196199/Test7196199.java fails
Summary: Fix safepoint handlers to save 128 bits on vector poll
Reviewed-by: duke
Contributed-by: felix.yang@linaro.org

@@ -2284,22 +2284,34 @@
     patch_end[-2] = (u_int64_t)prolog_ptr;
   patch_end[-1] = calltype;
 }
 #endif
 
-void MacroAssembler::push_CPU_state() {
+void MacroAssembler::push_CPU_state(bool save_vectors) {
     push(0x3fffffff, sp);         // integer registers except lr & sp
 
+  if (!save_vectors) {
     for (int i = 30; i >= 0; i -= 2)
       stpd(as_FloatRegister(i), as_FloatRegister(i+1),
            Address(pre(sp, -2 * wordSize)));
+  } else {
+    for (int i = 30; i >= 0; i -= 2)
+      stpq(as_FloatRegister(i), as_FloatRegister(i+1),
+           Address(pre(sp, -4 * wordSize)));
+  }
 }
 
-void MacroAssembler::pop_CPU_state() {
+void MacroAssembler::pop_CPU_state(bool restore_vectors) {
+  if (!restore_vectors) {
   for (int i = 0; i < 32; i += 2)
     ldpd(as_FloatRegister(i), as_FloatRegister(i+1),
          Address(post(sp, 2 * wordSize)));
+  } else {
+    for (int i = 0; i < 32; i += 2)
+      ldpq(as_FloatRegister(i), as_FloatRegister(i+1),
+           Address(post(sp, 4 * wordSize)));
+  }
 
   pop(0x3fffffff, sp);         // integer registers except lr & sp
 }
 
 /**