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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1189 } else if (exponent_type_ == TAGGED) { | 1189 } else if (exponent_type_ == TAGGED) { |
1190 __ JumpIfSmi(exponent_tagged, &exponent_is_smi); | 1190 __ JumpIfSmi(exponent_tagged, &exponent_is_smi); |
1191 __ Ldr(exponent_double, | 1191 __ Ldr(exponent_double, |
1192 FieldMemOperand(exponent_tagged, HeapNumber::kValueOffset)); | 1192 FieldMemOperand(exponent_tagged, HeapNumber::kValueOffset)); |
1193 } | 1193 } |
1194 | 1194 |
1195 // Handle double (heap number) exponents. | 1195 // Handle double (heap number) exponents. |
1196 if (exponent_type_ != INTEGER) { | 1196 if (exponent_type_ != INTEGER) { |
1197 // Detect integer exponents stored as doubles and handle those in the | 1197 // Detect integer exponents stored as doubles and handle those in the |
1198 // integer fast-path. | 1198 // integer fast-path. |
1199 __ TryConvertDoubleToInt64(exponent_integer, exponent_double, | 1199 __ TryRepresentDoubleAsInt64(exponent_integer, exponent_double, |
1200 scratch0_double, &exponent_is_integer); | 1200 scratch0_double, &exponent_is_integer); |
1201 | 1201 |
1202 if (exponent_type_ == ON_STACK) { | 1202 if (exponent_type_ == ON_STACK) { |
1203 FPRegister half_double = d3; | 1203 FPRegister half_double = d3; |
1204 FPRegister minus_half_double = d4; | 1204 FPRegister minus_half_double = d4; |
1205 // Detect square root case. Crankshaft detects constant +/-0.5 at compile | 1205 // Detect square root case. Crankshaft detects constant +/-0.5 at compile |
1206 // time and uses DoMathPowHalf instead. We then skip this check for | 1206 // time and uses DoMathPowHalf instead. We then skip this check for |
1207 // non-constant cases of +/-0.5 as these hardly occur. | 1207 // non-constant cases of +/-0.5 as these hardly occur. |
1208 | 1208 |
1209 __ Fmov(minus_half_double, -0.5); | 1209 __ Fmov(minus_half_double, -0.5); |
1210 __ Fmov(half_double, 0.5); | 1210 __ Fmov(half_double, 0.5); |
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5377 MemOperand(fp, 6 * kPointerSize), | 5377 MemOperand(fp, 6 * kPointerSize), |
5378 NULL); | 5378 NULL); |
5379 } | 5379 } |
5380 | 5380 |
5381 | 5381 |
5382 #undef __ | 5382 #undef __ |
5383 | 5383 |
5384 } } // namespace v8::internal | 5384 } } // namespace v8::internal |
5385 | 5385 |
5386 #endif // V8_TARGET_ARCH_ARM64 | 5386 #endif // V8_TARGET_ARCH_ARM64 |
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