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
|
/*========================== begin_copyright_notice ============================
Copyright (C) 2021-2023 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
//
/// GenXVisitor
/// -----------
///
/// GenXVisitor is a wrapper over llvm::InstVisitor, that supports GenX-specific
/// routines: iteration over function groups and GenX intrinsics. All visitors
/// are organized hierarchically, i.e. default non-overrided callbacks delegate
/// control to the next higher level, until the most specific overrided callback
/// for this intrinsic will be reached.
///
/// It's expected that support for the majority of GenX intrinsics will be added
/// here over time.
///
//===----------------------------------------------------------------------===//
#ifndef GENX_VISITOR_H
#define GENX_VISITOR_H
#include "FunctionGroup.h"
#include "vc/InternalIntrinsics/InternalIntrinsicInst.h"
#include "llvm/GenXIntrinsics/GenXIntrinsicInst.h"
#include "llvm/IR/InstVisitor.h"
namespace llvm {
namespace genx {
#define DELEGATE(CLASS_TO_VISIT) \
return static_cast<SubClass *>(this)->visit##CLASS_TO_VISIT( \
static_cast<CLASS_TO_VISIT &>(I))
#define GENX_DELEGATE(CLASS_TO_VISIT) \
return static_cast<SubClass *>(this)->visit##CLASS_TO_VISIT(I)
template <typename SubClass, typename RetTy = void>
class GenXVisitor : public InstVisitor<SubClass, RetTy> {
public:
using InstVisitor<SubClass, RetTy>::visit;
// Visitor for FunctionGroup.
void visit(FunctionGroup &FG) {
static_cast<SubClass *>(this)->visitFunctionGroup(FG);
visit(FG.begin(), FG.end());
};
// Forwarding function so that user can visit with pointer.
void visit(FunctionGroup *FG) { visit(*FG); }
// Default fallback for visiting FunctionGroup.
void visitFunctionGroup(FunctionGroup &FG) {}
// Redefine callback for Instruction::Call opcode: if it's GenX intrinsic,
// delegate it to appropriate callback, otherwise use standard call delegate.
RetTy visitCall(CallInst &I) {
if (vc::InternalIntrinsic::isInternalIntrinsic(&I))
return delegateInternalIntrinsic(cast<InternalIntrinsicInst>(I));
if (GenXIntrinsic::isGenXIntrinsic(&I))
return delegateGenXIntrinsic(cast<GenXIntrinsicInst>(I));
return InstVisitor<SubClass, RetTy>::visitCall(I);
}
// Implementation of default callbacks for vc internal intrinsics: propagate
// calls to the next level of their hierarchy.
RetTy visitInternalIntrinsicInst(InternalIntrinsicInst &I) {
DELEGATE(CallInst);
}
// Implementation of default callbacks for GenX intrinsics: propagate calls to
// the next level of their hierarchy.
RetTy visitGenXIntrinsicInst(GenXIntrinsicInst &I) { DELEGATE(CallInst); }
RetTy visitWrRegion(GenXIntrinsicInst &I) {
GENX_DELEGATE(GenXIntrinsicInst);
}
RetTy visitRdRegion(GenXIntrinsicInst &I) {
GENX_DELEGATE(GenXIntrinsicInst);
}
RetTy visitReadWritePredefReg(GenXIntrinsicInst &I) {
GENX_DELEGATE(GenXIntrinsicInst);
}
RetTy visitReadPredefReg(GenXIntrinsicInst &I) {
GENX_DELEGATE(ReadWritePredefReg);
}
RetTy visitWritePredefReg(GenXIntrinsicInst &I) {
GENX_DELEGATE(ReadWritePredefReg);
}
private:
RetTy delegateInternalIntrinsic(InternalIntrinsicInst &I) {
auto ID = I.getIntrinsicID();
if (ID == vc::InternalIntrinsic::not_internal_intrinsic)
DELEGATE(CallInst);
else
GENX_DELEGATE(InternalIntrinsicInst);
}
RetTy delegateGenXIntrinsic(GenXIntrinsicInst &I) {
auto ID = I.getIntrinsicID();
if (ID == GenXIntrinsic::not_genx_intrinsic)
DELEGATE(CallInst);
else if (GenXIntrinsic::isWrRegion(ID))
GENX_DELEGATE(WrRegion);
else if (GenXIntrinsic::isRdRegion(ID))
GENX_DELEGATE(RdRegion);
else if (GenXIntrinsic::isReadPredefReg(ID))
GENX_DELEGATE(ReadPredefReg);
else if (GenXIntrinsic::isWritePredefReg(ID))
GENX_DELEGATE(WritePredefReg);
else
GENX_DELEGATE(GenXIntrinsicInst);
}
};
#undef DELEGATE
#undef GENX_DELEGATE
} // namespace genx
} // namespace llvm
#endif
|
