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Issue 160423002: A64 support for DoubleToIStub (truncating). (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Add test cases Created 6 years, 10 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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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595 exponent, 595 exponent,
596 Operand(source_, LSR, 32 - HeapNumber::kMantissaBitsInTopWord)); 596 Operand(source_, LSR, 32 - HeapNumber::kMantissaBitsInTopWord));
597 __ Ret(); 597 __ Ret();
598 } 598 }
599 599
600 600
601 void DoubleToIStub::Generate(MacroAssembler* masm) { 601 void DoubleToIStub::Generate(MacroAssembler* masm) {
602 Label out_of_range, only_low, negate, done; 602 Label out_of_range, only_low, negate, done;
603 Register input_reg = source(); 603 Register input_reg = source();
604 Register result_reg = destination(); 604 Register result_reg = destination();
605 ASSERT(is_truncating());
605 606
606 int double_offset = offset(); 607 int double_offset = offset();
607 // Account for saved regs if input is sp. 608 // Account for saved regs if input is sp.
608 if (input_reg.is(sp)) double_offset += 3 * kPointerSize; 609 if (input_reg.is(sp)) double_offset += 3 * kPointerSize;
609 610
610 Register scratch = GetRegisterThatIsNotOneOf(input_reg, result_reg); 611 Register scratch = GetRegisterThatIsNotOneOf(input_reg, result_reg);
611 Register scratch_low = 612 Register scratch_low =
612 GetRegisterThatIsNotOneOf(input_reg, result_reg, scratch); 613 GetRegisterThatIsNotOneOf(input_reg, result_reg, scratch);
613 Register scratch_high = 614 Register scratch_high =
614 GetRegisterThatIsNotOneOf(input_reg, result_reg, scratch, scratch_low); 615 GetRegisterThatIsNotOneOf(input_reg, result_reg, scratch, scratch_low);
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5574 MemOperand(fp, 6 * kPointerSize), 5575 MemOperand(fp, 6 * kPointerSize),
5575 NULL); 5576 NULL);
5576 } 5577 }
5577 5578
5578 5579
5579 #undef __ 5580 #undef __
5580 5581
5581 } } // namespace v8::internal 5582 } } // namespace v8::internal
5582 5583
5583 #endif // V8_TARGET_ARCH_ARM 5584 #endif // V8_TARGET_ARCH_ARM
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