1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "jit/BaselineCompiler.h"
#include "jit/BaselineIC.h"
#include "jit/BaselineJIT.h"
#include "jit/Linker.h"
#include "jit/SharedICHelpers.h"
#include "jit/MacroAssembler-inl.h"
using namespace js;
using namespace js::jit;
namespace js {
namespace jit {
// ICCompare_Int32
bool
ICCompare_Int32::Compiler::generateStubCode(MacroAssembler& masm)
{
// Guard that R0 is an integer and R1 is an integer.
Label failure;
masm.branchTestInt32(Assembler::NotEqual, R0, &failure);
masm.branchTestInt32(Assembler::NotEqual, R1, &failure);
// Compare payload regs of R0 and R1.
Assembler::Condition cond = JSOpToCondition(op, /* signed = */true);
masm.cmp32(R0.payloadReg(), R1.payloadReg());
masm.ma_mov(Imm32(1), R0.payloadReg(), cond);
masm.ma_mov(Imm32(0), R0.payloadReg(), Assembler::InvertCondition(cond));
// Result is implicitly boxed already.
masm.tagValue(JSVAL_TYPE_BOOLEAN, R0.payloadReg(), R0);
EmitReturnFromIC(masm);
// Failure case - jump to next stub.
masm.bind(&failure);
EmitStubGuardFailure(masm);
return true;
}
bool
ICCompare_Double::Compiler::generateStubCode(MacroAssembler& masm)
{
Label failure, isNaN;
masm.ensureDouble(R0, FloatReg0, &failure);
masm.ensureDouble(R1, FloatReg1, &failure);
Register dest = R0.scratchReg();
Assembler::DoubleCondition doubleCond = JSOpToDoubleCondition(op);
Assembler::Condition cond = Assembler::ConditionFromDoubleCondition(doubleCond);
masm.compareDouble(FloatReg0, FloatReg1);
masm.ma_mov(Imm32(0), dest);
masm.ma_mov(Imm32(1), dest, cond);
masm.tagValue(JSVAL_TYPE_BOOLEAN, dest, R0);
EmitReturnFromIC(masm);
// Failure case - jump to next stub.
masm.bind(&failure);
EmitStubGuardFailure(masm);
return true;
}
} // namespace jit
} // namespace js
|
