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comparison src/share/vm/opto/library_call.cpp @ 643:c771b7f43bbf

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6378821: bitCount() should use POPC on SPARC processors and AMD+10h Summary: bitCount() should use POPC on SPARC processors where POPC is implemented directly in hardware. Reviewed-by: kvn, never
author twisti
date Fri, 13 Mar 2009 11:35:17 -0700
parents 98cb887364d3
children fbde8ec322d0
comparison
equal deleted inserted replaced
642:660978a2a31a 643:c771b7f43bbf
1 /* 1 /*
2 * Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
219 Node* dest, Node* dest_offset, 219 Node* dest, Node* dest_offset,
220 Node* copy_length); 220 Node* copy_length);
221 bool inline_unsafe_CAS(BasicType type); 221 bool inline_unsafe_CAS(BasicType type);
222 bool inline_unsafe_ordered_store(BasicType type); 222 bool inline_unsafe_ordered_store(BasicType type);
223 bool inline_fp_conversions(vmIntrinsics::ID id); 223 bool inline_fp_conversions(vmIntrinsics::ID id);
224 bool inline_bitCount(vmIntrinsics::ID id);
224 bool inline_reverseBytes(vmIntrinsics::ID id); 225 bool inline_reverseBytes(vmIntrinsics::ID id);
225 }; 226 };
226 227
227 228
228 //---------------------------make_vm_intrinsic---------------------------- 229 //---------------------------make_vm_intrinsic----------------------------
312 if (!UseNewReflection) return NULL; 313 if (!UseNewReflection) return NULL;
313 if (!InlineReflectionGetCallerClass) return NULL; 314 if (!InlineReflectionGetCallerClass) return NULL;
314 if (!JDK_Version::is_gte_jdk14x_version()) return NULL; 315 if (!JDK_Version::is_gte_jdk14x_version()) return NULL;
315 break; 316 break;
316 317
318 case vmIntrinsics::_bitCount_i:
319 case vmIntrinsics::_bitCount_l:
320 if (!UsePopCountInstruction) return NULL;
321 break;
322
317 default: 323 default:
318 break; 324 break;
319 } 325 }
320 326
321 // -XX:-InlineClassNatives disables natives from the Class class. 327 // -XX:-InlineClassNatives disables natives from the Class class.
614 case vmIntrinsics::_intBitsToFloat: 620 case vmIntrinsics::_intBitsToFloat:
615 case vmIntrinsics::_doubleToRawLongBits: 621 case vmIntrinsics::_doubleToRawLongBits:
616 case vmIntrinsics::_doubleToLongBits: 622 case vmIntrinsics::_doubleToLongBits:
617 case vmIntrinsics::_longBitsToDouble: 623 case vmIntrinsics::_longBitsToDouble:
618 return inline_fp_conversions(intrinsic_id()); 624 return inline_fp_conversions(intrinsic_id());
625
626 case vmIntrinsics::_bitCount_i:
627 case vmIntrinsics::_bitCount_l:
628 return inline_bitCount(intrinsic_id());
619 629
620 case vmIntrinsics::_reverseBytes_i: 630 case vmIntrinsics::_reverseBytes_i:
621 case vmIntrinsics::_reverseBytes_l: 631 case vmIntrinsics::_reverseBytes_l:
622 return inline_reverseBytes((vmIntrinsics::ID) intrinsic_id()); 632 return inline_reverseBytes((vmIntrinsics::ID) intrinsic_id());
623 633
1712 } else { 1722 } else {
1713 return basic_plus_adr(base, offset); 1723 return basic_plus_adr(base, offset);
1714 } 1724 }
1715 } 1725 }
1716 1726
1727 //----------------------------inline_bitCount_int/long-----------------------
1728 // inline int Integer.bitCount(int)
1729 // inline int Long.bitCount(long)
1730 bool LibraryCallKit::inline_bitCount(vmIntrinsics::ID id) {
1731 assert(id == vmIntrinsics::_bitCount_i || id == vmIntrinsics::_bitCount_l, "not bitCount");
1732 if (id == vmIntrinsics::_bitCount_i && !Matcher::has_match_rule(Op_PopCountI)) return false;
1733 if (id == vmIntrinsics::_bitCount_l && !Matcher::has_match_rule(Op_PopCountL)) return false;
1734 _sp += arg_size(); // restore stack pointer
1735 switch (id) {
1736 case vmIntrinsics::_bitCount_i:
1737 push(_gvn.transform(new (C, 2) PopCountINode(pop())));
1738 break;
1739 case vmIntrinsics::_bitCount_l:
1740 push(_gvn.transform(new (C, 2) PopCountLNode(pop_pair())));
1741 break;
1742 default:
1743 ShouldNotReachHere();
1744 }
1745 return true;
1746 }
1747
1717 //----------------------------inline_reverseBytes_int/long------------------- 1748 //----------------------------inline_reverseBytes_int/long-------------------
1718 // inline Integer.reverseBytes(int) 1749 // inline Integer.reverseBytes(int)
1719 // inline Long.reverseBytes(long) 1750 // inline Long.reverseBytes(long)
1720 bool LibraryCallKit::inline_reverseBytes(vmIntrinsics::ID id) { 1751 bool LibraryCallKit::inline_reverseBytes(vmIntrinsics::ID id) {
1721 assert(id == vmIntrinsics::_reverseBytes_i || id == vmIntrinsics::_reverseBytes_l, "not reverse Bytes"); 1752 assert(id == vmIntrinsics::_reverseBytes_i || id == vmIntrinsics::_reverseBytes_l, "not reverse Bytes");