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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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/intermediate_language.h" | 8 #include "vm/intermediate_language.h" |
| 9 | 9 |
| 10 #include "vm/dart_entry.h" | 10 #include "vm/dart_entry.h" |
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| 4918 // Return NaN. | 4918 // Return NaN. |
| 4919 __ Bind(&return_nan); | 4919 __ Bind(&return_nan); |
| 4920 __ LoadObject(temp, Double::ZoneHandle(Double::NewCanonical(NAN)), PP); | 4920 __ LoadObject(temp, Double::ZoneHandle(Double::NewCanonical(NAN)), PP); |
| 4921 __ movsd(result, FieldAddress(temp, Double::value_offset())); | 4921 __ movsd(result, FieldAddress(temp, Double::value_offset())); |
| 4922 __ jmp(&skip_call); | 4922 __ jmp(&skip_call); |
| 4923 | 4923 |
| 4924 Label do_pow, return_zero; | 4924 Label do_pow, return_zero; |
| 4925 __ Bind(&try_sqrt); | 4925 __ Bind(&try_sqrt); |
| 4926 // Before calling pow, check if we could use sqrt instead of pow. | 4926 // Before calling pow, check if we could use sqrt instead of pow. |
| 4927 __ LoadObject(temp, | 4927 __ LoadObject(temp, |
| 4928 Double::ZoneHandle(Double::NewCanonical(-INFINITY)), PP); | 4928 Double::ZoneHandle(Double::NewCanonical(kNegInfinity)), PP); |
| 4929 __ movsd(result, FieldAddress(temp, Double::value_offset())); | 4929 __ movsd(result, FieldAddress(temp, Double::value_offset())); |
| 4930 // base == -Infinity -> call pow; | 4930 // base == -Infinity -> call pow; |
| 4931 __ comisd(base, result); | 4931 __ comisd(base, result); |
| 4932 __ j(EQUAL, &do_pow, Assembler::kNearJump); | 4932 __ j(EQUAL, &do_pow, Assembler::kNearJump); |
| 4933 | 4933 |
| 4934 // exponent == 0.5 ? | 4934 // exponent == 0.5 ? |
| 4935 __ LoadObject(temp, Double::ZoneHandle(Double::NewCanonical(0.5)), PP); | 4935 __ LoadObject(temp, Double::ZoneHandle(Double::NewCanonical(0.5)), PP); |
| 4936 __ movsd(result, FieldAddress(temp, Double::value_offset())); | 4936 __ movsd(result, FieldAddress(temp, Double::value_offset())); |
| 4937 __ comisd(exp, result); | 4937 __ comisd(exp, result); |
| 4938 __ j(NOT_EQUAL, &do_pow, Assembler::kNearJump); | 4938 __ j(NOT_EQUAL, &do_pow, Assembler::kNearJump); |
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| 5922 __ movq(R10, Immediate(kInvalidObjectPointer)); | 5922 __ movq(R10, Immediate(kInvalidObjectPointer)); |
| 5923 __ movq(RBX, Immediate(kInvalidObjectPointer)); | 5923 __ movq(RBX, Immediate(kInvalidObjectPointer)); |
| 5924 #endif | 5924 #endif |
| 5925 } | 5925 } |
| 5926 | 5926 |
| 5927 } // namespace dart | 5927 } // namespace dart |
| 5928 | 5928 |
| 5929 #undef __ | 5929 #undef __ |
| 5930 | 5930 |
| 5931 #endif // defined TARGET_ARCH_X64 | 5931 #endif // defined TARGET_ARCH_X64 |
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