src/hotspot/share/opto/library_call.cpp

rev 53028 : 8212043: Add floating-point Math.min/max intrinsics
Summary: Floating-point Math.min() and Math.max() intrinsics are enabled on AArch64 platform
Reviewed-by: adinn, aph

*** 323,332 ****
--- 323,333 ----
    bool inline_montgomeryMultiply();
    bool inline_montgomerySquare();
    bool inline_vectorizedMismatch();
    bool inline_fma(vmIntrinsics::ID id);
    bool inline_character_compare(vmIntrinsics::ID id);
+   bool inline_fp_min_max(vmIntrinsics::ID id);
  
    bool inline_profileBoolean();
    bool inline_isCompileConstant();
    void clear_upper_avx() {
  #ifdef X86
*** 872,881 ****
--- 873,888 ----
    case vmIntrinsics::_isLowerCase:
    case vmIntrinsics::_isUpperCase:
    case vmIntrinsics::_isWhitespace:
      return inline_character_compare(intrinsic_id());
  
+   case vmIntrinsics::_maxF:
+   case vmIntrinsics::_minF:
+   case vmIntrinsics::_maxD:
+   case vmIntrinsics::_minD:
+     return inline_fp_min_max(intrinsic_id());
+ 
    default:
      // If you get here, it may be that someone has added a new intrinsic
      // to the list in vmSymbols.hpp without implementing it here.
  #ifndef PRODUCT
      if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) {
*** 6586,6595 ****
--- 6593,6638 ----
  
    set_result(_gvn.transform(n));
    return true;
  }
  
+ //------------------------------inline_fp_min_max------------------------------
+ bool LibraryCallKit::inline_fp_min_max(vmIntrinsics::ID id) {
+   Node *a = NULL;
+   Node *b = NULL;
+   Node *n = NULL;
+   switch (id) {
+   case vmIntrinsics::_maxF:
+   case vmIntrinsics::_minF:
+     assert(callee()->signature()->size() == 2, "minF/maxF has 2 parameters of size 1 each.");
+     a = argument(0);
+     b = argument(1);
+     break;
+   case vmIntrinsics::_maxD:
+   case vmIntrinsics::_minD:
+     assert(callee()->signature()->size() == 4, "minD/maxD has 2 parameters of size 2 each.");
+     a = round_double_node(argument(0));
+     b = round_double_node(argument(2));
+     break;
+   default:
+     fatal_unexpected_iid(id);
+     break;
+   }
+   if (a->is_Con() || b->is_Con()) {
+     return false;
+   }
+   switch (id) {
+   case vmIntrinsics::_maxF:  n = new MaxFNode(a, b);  break;
+   case vmIntrinsics::_minF:  n = new MinFNode(a, b);  break;
+   case vmIntrinsics::_maxD:  n = new MaxDNode(a, b);  break;
+   case vmIntrinsics::_minD:  n = new MinDNode(a, b);  break;
+   default:  fatal_unexpected_iid(id);  break;
+   }
+   set_result(_gvn.transform(n));
+   return true;
+ }
+ 
  bool LibraryCallKit::inline_profileBoolean() {
    Node* counts = argument(1);
    const TypeAryPtr* ary = NULL;
    ciArray* aobj = NULL;
    if (counts->is_Con()