AllowDuplicateRegisterNames.td
2.45 KB
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
// RUN: llvm-tblgen -gen-asm-matcher -I %p/../../include %s | FileCheck %s
// Check that MatchRegisterName and MatchRegisterAltName are generated
// correctly when multiple registers are defined with the same name and
// AllowDuplicateRegisterNames is set.
include "llvm/Target/Target.td"
def ArchInstrInfo : InstrInfo;
def ArchAsmParser : AsmParser {
let AllowDuplicateRegisterNames = 1;
let ShouldEmitMatchRegisterAltName = 1;
}
def Arch : Target {
let InstructionSet = ArchInstrInfo;
let AssemblyParsers = [ArchAsmParser];
}
let Namespace = "Arch" in {
class ArchReg<string n, list <string> alt, list <RegAltNameIndex> altidx>
: Register<n> {
let AltNames = alt;
let RegAltNameIndices = altidx;
}
def ABIRegAltName : RegAltNameIndex;
foreach i = 0-3 in {
def R#i#_32 : ArchReg<"r"#i, ["x"#i], [ABIRegAltName]>;
def R#i#_64 : ArchReg<"r"#i, ["x"#i], [ABIRegAltName]>;
}
} // Namespace = "Arch"
def GPR32 : RegisterClass<"Arch", [i32], 32, (add
(sequence "R%u_32", 0, 3)
)>;
def GPR64 : RegisterClass<"Arch", [i64], 64, (add
(sequence "R%u_64", 0, 3)
)>;
// CHECK: static unsigned MatchRegisterName(StringRef Name) {
// CHECK: switch (Name.size()) {
// CHECK: default: break;
// CHECK: case 2: // 8 strings to match.
// CHECK: if (Name[0] != 'r')
// CHECK: break;
// CHECK: switch (Name[1]) {
// CHECK: default: break;
// CHECK: case '0': // 2 strings to match.
// CHECK: return 1; // "r0"
// CHECK: case '1': // 2 strings to match.
// CHECK: return 3; // "r1"
// CHECK: case '2': // 2 strings to match.
// CHECK: return 5; // "r2"
// CHECK: case '3': // 2 strings to match.
// CHECK: return 7; // "r3"
// CHECK: }
// CHECK: break;
// CHECK: }
// CHECK: return 0;
// CHECK: }
// CHECK: static unsigned MatchRegisterAltName(StringRef Name) {
// CHECK: switch (Name.size()) {
// CHECK: default: break;
// CHECK: case 2: // 8 strings to match.
// CHECK: if (Name[0] != 'x')
// CHECK: break;
// CHECK: switch (Name[1]) {
// CHECK: default: break;
// CHECK: case '0': // 2 strings to match.
// CHECK: return 1; // "x0"
// CHECK: case '1': // 2 strings to match.
// CHECK: return 3; // "x1"
// CHECK: case '2': // 2 strings to match.
// CHECK: return 5; // "x2"
// CHECK: case '3': // 2 strings to match.
// CHECK: return 7; // "x3"
// CHECK: }
// CHECK: break;
// CHECK: }
// CHECK: return 0;
// CHECK: }