Ryan Macnak
e443b89f23
Includes support for modifier spans and duplicate named capture groups. Drops the flow graph implementation to ease maintenance. TEST=corelib/regexp Bug: https://github.com/dart-lang/sdk/issues/56573 Bug: https://github.com/dart-lang/sdk/issues/61337 Bug: https://github.com/dart-lang/sdk/issues/62349 Bug: https://github.com/dart-lang/sdk/issues/62708 Change-Id: I05640ba945a4fa5476e7ad463738f4f39d842c14 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/480121 Reviewed-by: Lasse Nielsen <lrn@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Class for intrinsifying functions.
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#define SHOULD_NOT_INCLUDE_RUNTIME
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#include "vm/compiler/asm_intrinsifier.h"
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namespace dart {
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namespace compiler {
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void AsmIntrinsifier::String_identityHash(Assembler* assembler,
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Label* normal_ir_body) {
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String_getHashCode(assembler, normal_ir_body);
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}
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#define __ assembler->
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// TODO(srdjan): Add combinations (one-byte/two-byte/external strings).
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void AsmIntrinsifier::StringEquality(Assembler* assembler,
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Register obj1,
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Register obj2,
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Register temp1,
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Register temp2,
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Register result,
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Label* normal_ir_body,
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intptr_t string_cid) {
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Label is_true, is_false, loop;
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__ CompareRegisters(obj1, obj2);
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__ BranchIf(EQUAL, &is_true, AssemblerBase::kNearJump);
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__ BranchIfSmi(obj2, &is_false, AssemblerBase::kNearJump);
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__ CompareClassId(obj2, string_cid, temp1);
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__ BranchIf(NOT_EQUAL, normal_ir_body, AssemblerBase::kNearJump);
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__ LoadFieldFromOffset(temp1, obj1, target::String::length_offset());
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__ CompareWithMemoryValue(
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temp1, FieldAddress(obj2, target::String::length_offset()));
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__ BranchIf(NOT_EQUAL, &is_false, AssemblerBase::kNearJump);
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// Ensure temp1 has length in bytes
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if (string_cid == kOneByteStringCid) {
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__ ArithmeticShiftRightImmediate(temp1, 1);
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}
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// Rounding up to word boundary
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__ AddImmediate(temp1, target::kWordSize - 1);
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__ ArithmeticShiftRightImmediate(temp1, target::kWordSizeLog2);
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__ CompareWords(obj1, obj2,
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target::String::length_offset() + target::kWordSize, temp1,
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temp2, &is_true);
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__ Bind(&is_false);
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__ LoadObject(result, CastHandle<Object>(FalseObject()));
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__ Ret();
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__ Bind(&is_true);
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__ LoadObject(result, CastHandle<Object>(TrueObject()));
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__ Ret();
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__ Bind(normal_ir_body);
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}
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} // namespace compiler
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} // namespace dart
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