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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
| //===- TargetCallingConv.td - Target Calling Conventions ---*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the target-independent interfaces with which targets
// describe their calling conventions.
//
//===----------------------------------------------------------------------===//
class CCAction;
class CallingConv;
/// CCCustom - Calls a custom arg handling function.
class CCCustom<string fn> : CCAction {
string FuncName = fn;
}
/// CCPredicateAction - Instances of this class check some predicate, then
/// delegate to another action if the predicate is true.
class CCPredicateAction<CCAction A> : CCAction {
CCAction SubAction = A;
}
/// CCIfType - If the current argument is one of the specified types, apply
/// Action A.
class CCIfType<list<ValueType> vts, CCAction A> : CCPredicateAction<A> {
list<ValueType> VTs = vts;
}
/// CCIf - If the predicate matches, apply A.
class CCIf<string predicate, CCAction A> : CCPredicateAction<A> {
string Predicate = predicate;
}
/// CCIfByVal - If the current argument has ByVal parameter attribute, apply
/// Action A.
class CCIfByVal<CCAction A> : CCIf<"ArgFlags.isByVal()", A> {
}
/// CCIfSwiftSelf - If the current argument has swiftself parameter attribute,
/// apply Action A.
class CCIfSwiftSelf<CCAction A> : CCIf<"ArgFlags.isSwiftSelf()", A> {
}
/// CCIfSwiftError - If the current argument has swifterror parameter attribute,
/// apply Action A.
class CCIfSwiftError<CCAction A> : CCIf<"ArgFlags.isSwiftError()", A> {
}
/// CCIfCFGuardTarget - If the current argument has cfguardtarget parameter
/// attribute, apply Action A.
class CCIfCFGuardTarget<CCAction A> : CCIf<"ArgFlags.isCFGuardTarget()", A> {
}
/// CCIfConsecutiveRegs - If the current argument has InConsecutiveRegs
/// parameter attribute, apply Action A.
class CCIfConsecutiveRegs<CCAction A> : CCIf<"ArgFlags.isInConsecutiveRegs()", A> {
}
/// CCIfCC - Match if the current calling convention is 'CC'.
class CCIfCC<string CC, CCAction A>
: CCIf<!strconcat("State.getCallingConv() == ", CC), A> {}
/// CCIfInReg - If this argument is marked with the 'inreg' attribute, apply
/// the specified action.
class CCIfInReg<CCAction A> : CCIf<"ArgFlags.isInReg()", A> {}
/// CCIfNest - If this argument is marked with the 'nest' attribute, apply
/// the specified action.
class CCIfNest<CCAction A> : CCIf<"ArgFlags.isNest()", A> {}
/// CCIfSplit - If this argument is marked with the 'split' attribute, apply
/// the specified action.
class CCIfSplit<CCAction A> : CCIf<"ArgFlags.isSplit()", A> {}
/// CCIfSRet - If this argument is marked with the 'sret' attribute, apply
/// the specified action.
class CCIfSRet<CCAction A> : CCIf<"ArgFlags.isSRet()", A> {}
/// CCIfVarArg - If the current function is vararg - apply the action
class CCIfVarArg<CCAction A> : CCIf<"State.isVarArg()", A> {}
/// CCIfNotVarArg - If the current function is not vararg - apply the action
class CCIfNotVarArg<CCAction A> : CCIf<"!State.isVarArg()", A> {}
/// CCIfPtrAddrSpace - If the top-level parent of the current argument has
/// pointer type in the specified address-space.
class CCIfPtrAddrSpace<int AS, CCAction A>
: CCIf<"(ArgFlags.isPointer() && ArgFlags.getPointerAddrSpace() == " # AS # ")", A> {}
/// CCIfPtr - If the top-level parent of the current argument had
/// pointer type in some address-space.
class CCIfPtr<CCAction A> : CCIf<"ArgFlags.isPointer()", A> {}
/// CCAssignToReg - This action matches if there is a register in the specified
/// list that is still available. If so, it assigns the value to the first
/// available register and succeeds.
class CCAssignToReg<list<Register> regList> : CCAction {
list<Register> RegList = regList;
}
/// CCAssignToRegWithShadow - Same as CCAssignToReg, but with list of registers
/// which became shadowed, when some register is used.
class CCAssignToRegWithShadow<list<Register> regList,
list<Register> shadowList> : CCAction {
list<Register> RegList = regList;
list<Register> ShadowRegList = shadowList;
}
/// CCAssignToStack - This action always matches: it assigns the value to a
/// stack slot of the specified size and alignment on the stack. If size is
/// zero then the ABI size is used; if align is zero then the ABI alignment
/// is used - these may depend on the target or subtarget.
class CCAssignToStack<int size, int align> : CCAction {
int Size = size;
int Align = align;
}
/// CCAssignToStackWithShadow - Same as CCAssignToStack, but with a list of
/// registers to be shadowed. Note that, unlike CCAssignToRegWithShadow, this
/// shadows ALL of the registers in shadowList.
class CCAssignToStackWithShadow<int size,
int align,
list<Register> shadowList> : CCAction {
int Size = size;
int Align = align;
list<Register> ShadowRegList = shadowList;
}
/// CCPassByVal - This action always matches: it assigns the value to a stack
/// slot to implement ByVal aggregate parameter passing. Size and alignment
/// specify the minimum size and alignment for the stack slot.
class CCPassByVal<int size, int align> : CCAction {
int Size = size;
int Align = align;
}
/// CCPromoteToType - If applied, this promotes the specified current value to
/// the specified type.
class CCPromoteToType<ValueType destTy> : CCAction {
ValueType DestTy = destTy;
}
/// CCPromoteToUpperBitsInType - If applied, this promotes the specified current
/// value to the specified type and shifts the value into the upper bits.
class CCPromoteToUpperBitsInType<ValueType destTy> : CCAction {
ValueType DestTy = destTy;
}
/// CCBitConvertToType - If applied, this bitconverts the specified current
/// value to the specified type.
class CCBitConvertToType<ValueType destTy> : CCAction {
ValueType DestTy = destTy;
}
/// CCTruncToType - If applied, this truncates the specified current value to
/// the specified type.
class CCTruncToType<ValueType destTy> : CCAction {
ValueType DestTy = destTy;
}
/// CCPassIndirect - If applied, this stores the value to stack and passes the pointer
/// as normal argument.
class CCPassIndirect<ValueType destTy> : CCAction {
ValueType DestTy = destTy;
}
/// CCDelegateTo - This action invokes the specified sub-calling-convention. It
/// is successful if the specified CC matches.
class CCDelegateTo<CallingConv cc> : CCAction {
CallingConv CC = cc;
}
/// CallingConv - An instance of this is used to define each calling convention
/// that the target supports.
class CallingConv<list<CCAction> actions> {
list<CCAction> Actions = actions;
/// If true, this calling convention will be emitted as externally visible in
/// the llvm namespaces instead of as a static function.
bit Entry = 0;
bit Custom = 0;
}
/// CustomCallingConv - An instance of this is used to declare calling
/// conventions that are implemented using a custom function of the same name.
class CustomCallingConv : CallingConv<[]> {
let Custom = 1;
}
/// CalleeSavedRegs - A list of callee saved registers for a given calling
/// convention. The order of registers is used by PrologEpilogInsertion when
/// allocation stack slots for saved registers.
///
/// For each CalleeSavedRegs def, TableGen will emit a FOO_SaveList array for
/// returning from getCalleeSavedRegs(), and a FOO_RegMask bit mask suitable for
/// returning from getCallPreservedMask().
class CalleeSavedRegs<dag saves> {
dag SaveList = saves;
// Registers that are also preserved across function calls, but should not be
// included in the generated FOO_SaveList array. These registers will be
// included in the FOO_RegMask bit mask. This can be used for registers that
// are saved automatically, like the SPARC register windows.
dag OtherPreserved;
}
|