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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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3378 VFPRoundingMode rounding_mode = instr->truncating() ? kRoundToMinusInf | 3378 VFPRoundingMode rounding_mode = instr->truncating() ? kRoundToMinusInf |
3379 : kRoundToNearest; | 3379 : kRoundToNearest; |
3380 | 3380 |
3381 EmitVFPTruncate(rounding_mode, | 3381 EmitVFPTruncate(rounding_mode, |
3382 single_scratch, | 3382 single_scratch, |
3383 double_input, | 3383 double_input, |
3384 scratch1, | 3384 scratch1, |
3385 scratch2); | 3385 scratch2); |
3386 // Deoptimize if we had a vfp invalid exception. | 3386 // Deoptimize if we had a vfp invalid exception. |
3387 DeoptimizeIf(ne, instr->environment()); | 3387 DeoptimizeIf(ne, instr->environment()); |
3388 | |
3388 // Retrieve the result. | 3389 // Retrieve the result. |
3389 __ vmov(result_reg, single_scratch); | 3390 __ vmov(result_reg, single_scratch); |
3390 | 3391 |
3391 if (instr->truncating() && | 3392 if (!instr->truncating()) { |
Søren Thygesen Gjesse
2011/02/24 09:09:17
Please add a comment here explaining the conversio
| |
3392 instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { | 3393 __ vmov(single_scratch, result_reg); |
3393 Label done; | 3394 __ vcvt_f64_s32(double_scratch0(), single_scratch); |
3394 __ cmp(result_reg, Operand(0)); | 3395 __ VFPCompareAndSetFlags(double_scratch0(), double_input); |
3395 __ b(ne, &done); | |
3396 // Check for -0. | |
3397 __ vmov(scratch1, double_input.high()); | |
3398 __ tst(scratch1, Operand(HeapNumber::kSignMask)); | |
3399 DeoptimizeIf(ne, instr->environment()); | 3396 DeoptimizeIf(ne, instr->environment()); |
3397 if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { | |
3398 Label done; | |
3399 __ cmp(result_reg, Operand(0)); | |
3400 __ b(ne, &done); | |
3401 // Check for -0. | |
3402 __ vmov(scratch1, double_input.high()); | |
3403 __ tst(scratch1, Operand(HeapNumber::kSignMask)); | |
3404 DeoptimizeIf(ne, instr->environment()); | |
3400 | 3405 |
3401 __ bind(&done); | 3406 __ bind(&done); |
3407 } | |
3402 } | 3408 } |
3403 } | 3409 } |
3404 | 3410 |
3405 | 3411 |
3406 void LCodeGen::DoCheckSmi(LCheckSmi* instr) { | 3412 void LCodeGen::DoCheckSmi(LCheckSmi* instr) { |
3407 LOperand* input = instr->InputAt(0); | 3413 LOperand* input = instr->InputAt(0); |
3408 ASSERT(input->IsRegister()); | 3414 ASSERT(input->IsRegister()); |
3409 __ tst(ToRegister(input), Operand(kSmiTagMask)); | 3415 __ tst(ToRegister(input), Operand(kSmiTagMask)); |
3410 DeoptimizeIf(instr->condition(), instr->environment()); | 3416 DeoptimizeIf(instr->condition(), instr->environment()); |
3411 } | 3417 } |
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3847 ASSERT(!environment->HasBeenRegistered()); | 3853 ASSERT(!environment->HasBeenRegistered()); |
3848 RegisterEnvironmentForDeoptimization(environment); | 3854 RegisterEnvironmentForDeoptimization(environment); |
3849 ASSERT(osr_pc_offset_ == -1); | 3855 ASSERT(osr_pc_offset_ == -1); |
3850 osr_pc_offset_ = masm()->pc_offset(); | 3856 osr_pc_offset_ = masm()->pc_offset(); |
3851 } | 3857 } |
3852 | 3858 |
3853 | 3859 |
3854 #undef __ | 3860 #undef __ |
3855 | 3861 |
3856 } } // namespace v8::internal | 3862 } } // namespace v8::internal |
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