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Side by Side Diff: runtime/vm/intrinsifier_ia32.cc

Issue 11227042: isEven, isOdd, isNegative, isMaxValue, isMinValue, isInfinite, isPositive, isSingleValue. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Rebase. Created 8 years, 2 months ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 // 4 //
5 // The intrinsic code below is executed before a method has built its frame. 5 // The intrinsic code below is executed before a method has built its frame.
6 // The return address is on the stack and the arguments below it. 6 // The return address is on the stack and the arguments below it.
7 // Registers EDX (arguments descriptor) and ECX (function) must be preserved. 7 // Registers EDX (arguments descriptor) and ECX (function) must be preserved.
8 // Each intrinsification method returns true if the corresponding 8 // Each intrinsification method returns true if the corresponding
9 // Dart method was intrinsified. 9 // Dart method was intrinsified.
10 10
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1358 &fall_through, 1358 &fall_through,
1359 Assembler::kNearJump, 1359 Assembler::kNearJump,
1360 EAX); // Result register. 1360 EAX); // Result register.
1361 __ movsd(FieldAddress(EAX, Double::value_offset()), XMM0); 1361 __ movsd(FieldAddress(EAX, Double::value_offset()), XMM0);
1362 __ ret(); 1362 __ ret();
1363 __ Bind(&fall_through); 1363 __ Bind(&fall_through);
1364 return false; 1364 return false;
1365 } 1365 }
1366 1366
1367 1367
1368 bool Intrinsifier::Double_isNaN(Assembler* assembler) { 1368 bool Intrinsifier::Double_getIsNaN(Assembler* assembler) {
1369 const Bool& bool_true = Bool::ZoneHandle(Bool::True()); 1369 const Bool& bool_true = Bool::ZoneHandle(Bool::True());
1370 const Bool& bool_false = Bool::ZoneHandle(Bool::False()); 1370 const Bool& bool_false = Bool::ZoneHandle(Bool::False());
1371 Label is_true; 1371 Label is_true;
1372 __ movl(EAX, Address(ESP, +1 * kWordSize)); 1372 __ movl(EAX, Address(ESP, +1 * kWordSize));
1373 __ movsd(XMM0, FieldAddress(EAX, Double::value_offset())); 1373 __ movsd(XMM0, FieldAddress(EAX, Double::value_offset()));
1374 __ comisd(XMM0, XMM0); 1374 __ comisd(XMM0, XMM0);
1375 __ j(PARITY_EVEN, &is_true, Assembler::kNearJump); // NaN -> true; 1375 __ j(PARITY_EVEN, &is_true, Assembler::kNearJump); // NaN -> true;
1376 __ LoadObject(EAX, bool_false); 1376 __ LoadObject(EAX, bool_false);
1377 __ ret(); 1377 __ ret();
1378 __ Bind(&is_true); 1378 __ Bind(&is_true);
1379 __ LoadObject(EAX, bool_true); 1379 __ LoadObject(EAX, bool_true);
1380 __ ret(); 1380 __ ret();
1381 return true; // Method is complete, no slow case. 1381 return true; // Method is complete, no slow case.
1382 } 1382 }
1383 1383
1384 1384
1385 bool Intrinsifier::Double_isNegative(Assembler* assembler) { 1385 bool Intrinsifier::Double_getIsNegative(Assembler* assembler) {
1386 const Bool& bool_true = Bool::ZoneHandle(Bool::True()); 1386 const Bool& bool_true = Bool::ZoneHandle(Bool::True());
1387 const Bool& bool_false = Bool::ZoneHandle(Bool::False()); 1387 const Bool& bool_false = Bool::ZoneHandle(Bool::False());
1388 Label is_false, is_true, is_zero; 1388 Label is_false, is_true, is_zero;
1389 __ movl(EAX, Address(ESP, +1 * kWordSize)); 1389 __ movl(EAX, Address(ESP, +1 * kWordSize));
1390 __ movsd(XMM0, FieldAddress(EAX, Double::value_offset())); 1390 __ movsd(XMM0, FieldAddress(EAX, Double::value_offset()));
1391 __ xorpd(XMM1, XMM1); // 0.0 -> XMM1. 1391 __ xorpd(XMM1, XMM1); // 0.0 -> XMM1.
1392 __ comisd(XMM0, XMM1); 1392 __ comisd(XMM0, XMM1);
1393 __ j(PARITY_EVEN, &is_false, Assembler::kNearJump); // NaN -> false. 1393 __ j(PARITY_EVEN, &is_false, Assembler::kNearJump); // NaN -> false.
1394 __ j(EQUAL, &is_zero, Assembler::kNearJump); // Check for negative zero. 1394 __ j(EQUAL, &is_zero, Assembler::kNearJump); // Check for negative zero.
1395 __ j(ABOVE_EQUAL, &is_false, Assembler::kNearJump); // >= 0 -> false. 1395 __ j(ABOVE_EQUAL, &is_false, Assembler::kNearJump); // >= 0 -> false.
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1663 __ Bind(&is_true); 1663 __ Bind(&is_true);
1664 __ LoadObject(EAX, bool_true); 1664 __ LoadObject(EAX, bool_true);
1665 __ ret(); 1665 __ ret();
1666 return true; 1666 return true;
1667 } 1667 }
1668 1668
1669 #undef __ 1669 #undef __
1670 } // namespace dart 1670 } // namespace dart
1671 1671
1672 #endif // defined TARGET_ARCH_IA32 1672 #endif // defined TARGET_ARCH_IA32
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