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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 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. |
6 #if defined(TARGET_ARCH_X64) | 6 #if defined(TARGET_ARCH_X64) |
7 | 7 |
8 #include "vm/intrinsifier.h" | 8 #include "vm/intrinsifier.h" |
9 | 9 |
10 #include "vm/assembler.h" | 10 #include "vm/assembler.h" |
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1249 &fall_through, | 1249 &fall_through, |
1250 Assembler::kNearJump, | 1250 Assembler::kNearJump, |
1251 RAX); // Result register. | 1251 RAX); // Result register. |
1252 __ movsd(FieldAddress(RAX, Double::value_offset()), XMM0); | 1252 __ movsd(FieldAddress(RAX, Double::value_offset()), XMM0); |
1253 __ ret(); | 1253 __ ret(); |
1254 __ Bind(&fall_through); | 1254 __ Bind(&fall_through); |
1255 return false; | 1255 return false; |
1256 } | 1256 } |
1257 | 1257 |
1258 | 1258 |
1259 bool Intrinsifier::Double_isNaN(Assembler* assembler) { | 1259 bool Intrinsifier::Double_getIsNaN(Assembler* assembler) { |
1260 const Bool& bool_true = Bool::ZoneHandle(Bool::True()); | 1260 const Bool& bool_true = Bool::ZoneHandle(Bool::True()); |
1261 const Bool& bool_false = Bool::ZoneHandle(Bool::False()); | 1261 const Bool& bool_false = Bool::ZoneHandle(Bool::False()); |
1262 Label is_true; | 1262 Label is_true; |
1263 __ movq(RAX, Address(RSP, +1 * kWordSize)); | 1263 __ movq(RAX, Address(RSP, +1 * kWordSize)); |
1264 __ movsd(XMM0, FieldAddress(RAX, Double::value_offset())); | 1264 __ movsd(XMM0, FieldAddress(RAX, Double::value_offset())); |
1265 __ comisd(XMM0, XMM0); | 1265 __ comisd(XMM0, XMM0); |
1266 __ j(PARITY_EVEN, &is_true, Assembler::kNearJump); // NaN -> true; | 1266 __ j(PARITY_EVEN, &is_true, Assembler::kNearJump); // NaN -> true; |
1267 __ LoadObject(RAX, bool_false); | 1267 __ LoadObject(RAX, bool_false); |
1268 __ ret(); | 1268 __ ret(); |
1269 __ Bind(&is_true); | 1269 __ Bind(&is_true); |
1270 __ LoadObject(RAX, bool_true); | 1270 __ LoadObject(RAX, bool_true); |
1271 __ ret(); | 1271 __ ret(); |
1272 return true; // Method is complete, no slow case. | 1272 return true; // Method is complete, no slow case. |
1273 } | 1273 } |
1274 | 1274 |
1275 | 1275 |
1276 bool Intrinsifier::Double_isNegative(Assembler* assembler) { | 1276 bool Intrinsifier::Double_getIsNegative(Assembler* assembler) { |
1277 const Bool& bool_true = Bool::ZoneHandle(Bool::True()); | 1277 const Bool& bool_true = Bool::ZoneHandle(Bool::True()); |
1278 const Bool& bool_false = Bool::ZoneHandle(Bool::False()); | 1278 const Bool& bool_false = Bool::ZoneHandle(Bool::False()); |
1279 Label is_false, is_true, is_zero; | 1279 Label is_false, is_true, is_zero; |
1280 __ movq(RAX, Address(RSP, +1 * kWordSize)); | 1280 __ movq(RAX, Address(RSP, +1 * kWordSize)); |
1281 __ movsd(XMM0, FieldAddress(RAX, Double::value_offset())); | 1281 __ movsd(XMM0, FieldAddress(RAX, Double::value_offset())); |
1282 __ xorpd(XMM1, XMM1); // 0.0 -> XMM1. | 1282 __ xorpd(XMM1, XMM1); // 0.0 -> XMM1. |
1283 __ comisd(XMM0, XMM1); | 1283 __ comisd(XMM0, XMM1); |
1284 __ j(PARITY_EVEN, &is_false, Assembler::kNearJump); // NaN -> false. | 1284 __ j(PARITY_EVEN, &is_false, Assembler::kNearJump); // NaN -> false. |
1285 __ j(EQUAL, &is_zero, Assembler::kNearJump); // Check for negative zero. | 1285 __ j(EQUAL, &is_zero, Assembler::kNearJump); // Check for negative zero. |
1286 __ j(ABOVE_EQUAL, &is_false, Assembler::kNearJump); // >= 0 -> false. | 1286 __ j(ABOVE_EQUAL, &is_false, Assembler::kNearJump); // >= 0 -> false. |
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1567 __ LoadObject(RAX, bool_true); | 1567 __ LoadObject(RAX, bool_true); |
1568 __ ret(); | 1568 __ ret(); |
1569 return true; | 1569 return true; |
1570 } | 1570 } |
1571 | 1571 |
1572 #undef __ | 1572 #undef __ |
1573 | 1573 |
1574 } // namespace dart | 1574 } // namespace dart |
1575 | 1575 |
1576 #endif // defined TARGET_ARCH_X64 | 1576 #endif // defined TARGET_ARCH_X64 |
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