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
|
#include "llvm/ADT/StringMap.h"
#include <string>
#include <vector>
namespace hooks {
/// NUM_KEYS - Calculate the size of a const char* array.
#define NUM_KEYS(Keys) sizeof(Keys) / sizeof(const char*)
// See http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
inline unsigned NextHighestPowerOf2 (unsigned i) {
i |= i >> 1;
i |= i >> 2;
i |= i >> 4;
i |= i >> 8;
i |= i >> 16;
i++;
return i;
}
typedef std::vector<std::string> StrVec;
typedef llvm::StringMap<const char*> ArgMap;
/// ConvertToMAttrImpl - Common implementation of ConvertMArchToMAttr and
/// ConvertToMAttr. The optional Args parameter contains information about how
/// to transform special-cased values (for example, '-march=armv6' must be
/// forwarded as '-mattr=+v6').
std::string ConvertToMAttrImpl(const StrVec& Opts,
const ArgMap* Args = 0,
const ArgMap* MCpuArgs = 0) {
std::string mattr("-mattr=");
std::string mcpu("-mcpu=");
bool mattrTouched = false;
bool mcpuTouched = false;
bool firstIter = true;
for (StrVec::const_iterator B = Opts.begin(), E = Opts.end(); B!=E; ++B) {
const std::string& Arg = *B;
if (firstIter)
firstIter = false;
else
mattr += ",";
// Check if the argument is a special case.
if (Args != 0) {
ArgMap::const_iterator I = Args->find(Arg);
if (I != Args->end()) {
mattr += '+';
mattr += I->getValue();
continue;
}
}
// Check if the argument should be forwarded to -mcpu instead of -mattr.
if (MCpuArgs != 0 && !mcpuTouched) {
ArgMap::const_iterator I = MCpuArgs->find(Arg);
if (I != MCpuArgs->end()) {
mcpuTouched = true;
mcpu += I->getValue();
continue;
}
}
// Convert 'no-foo' to '-foo'.
if (Arg.find("no-") == 0 && Arg[3] != 0) {
mattr += '-';
mattr += Arg.c_str() + 3;
}
// Convert 'foo' to '+foo'.
else {
mattr += '+';
mattr += Arg;
}
}
std::string out;
if (mattrTouched)
out += mattr;
if (mcpuTouched)
out += (mattrTouched ? " " : "") + mcpu;
return out;
}
// -march values that need to be special-cased.
const char* MArchKeysARM[] = { "armv4t", "armv5t", "armv5te", "armv6",
"armv6-m", "armv6t2", "armv7-a", "armv7-m" };
const char* MArchValuesARM[] = { "v4t", "v5t", "v5te", "v6", "v6m", "v6t2",
"v7a", "v7m" };
const unsigned MArchNumKeysARM = NUM_KEYS(MArchKeysARM);
const unsigned MArchMapSize = NextHighestPowerOf2(MArchNumKeysARM);
// -march values that should be forwarded as -mcpu
const char* MArchMCpuKeysARM[] = { "iwmmxt", "ep9312" };
const char* MArchMCpuValuesARM[] = { "iwmmxt", "ep9312"};
const unsigned MArchMCpuNumKeysARM = NUM_KEYS(MArchMCpuKeysARM);
const unsigned MArchMCpuMapSize = NextHighestPowerOf2(MArchMCpuNumKeysARM);
void FillInArgMap(ArgMap& Args, const char* Keys[],
const char* Values[], unsigned NumKeys)
{
for (unsigned i = 0; i < NumKeys; ++i) {
// Explicit cast to StringRef here is necessary to pick up the right
// overload.
Args.GetOrCreateValue(llvm::StringRef(Keys[i]), Values[i]);
}
}
/// ConvertMArchToMAttr - Convert -march from the gcc dialect to
/// something llc can understand.
std::string ConvertMArchToMAttr(const StrVec& Opts) {
static ArgMap MArchMap(MArchMapSize);
static ArgMap MArchMCpuMap(MArchMapSize);
static bool StaticDataInitialized = false;
if (!StaticDataInitialized) {
FillInArgMap(MArchMap, MArchKeysARM, MArchValuesARM, MArchNumKeysARM);
FillInArgMap(MArchMCpuMap, MArchMCpuKeysARM,
MArchMCpuValuesARM, MArchMCpuNumKeysARM);
StaticDataInitialized = true;
}
return ConvertToMAttrImpl(Opts, &MArchMap, &MArchMCpuMap);
}
// -mcpu values that need to be special-cased.
const char* MCpuKeysPPC[] = { "G3", "G4", "G5", "powerpc", "powerpc64"};
const char* MCpuValuesPPC[] = { "g3", "g4", "g5", "ppc", "ppc64"};
const unsigned MCpuNumKeysPPC = NUM_KEYS(MCpuKeysPPC);
const unsigned MCpuMapSize = NextHighestPowerOf2(MCpuNumKeysPPC);
/// ConvertMCpu - Convert -mcpu value from the gcc to the llc dialect.
std::string ConvertMCpu(const char* Val) {
static ArgMap MCpuMap(MCpuMapSize);
static bool StaticDataInitialized = false;
if (!StaticDataInitialized) {
FillInArgMap(MCpuMap, MCpuKeysPPC, MCpuValuesPPC, MCpuNumKeysPPC);
StaticDataInitialized = true;
}
std::string ret = "-mcpu=";
ArgMap::const_iterator I = MCpuMap.find(Val);
if (I != MCpuMap.end()) {
return ret + I->getValue();
}
return ret + Val;
}
// -mfpu values that need to be special-cased.
const char* MFpuKeysARM[] = { "vfp", "vfpv3",
"vfpv3-fp16", "vfpv3-d16", "vfpv3-d16-fp16",
"neon", "neon-fp16" };
const char* MFpuValuesARM[] = { "vfp2", "vfp3",
"+vfp3,+fp16", "+vfp3,+d16", "+vfp3,+d16,+fp16",
"+neon", "+neon,+neonfp" };
const unsigned MFpuNumKeysARM = NUM_KEYS(MFpuKeysARM);
const unsigned MFpuMapSize = NextHighestPowerOf2(MFpuNumKeysARM);
/// ConvertMFpu - Convert -mfpu value from the gcc to the llc dialect.
std::string ConvertMFpu(const char* Val) {
static ArgMap MFpuMap(MFpuMapSize);
static bool StaticDataInitialized = false;
if (!StaticDataInitialized) {
FillInArgMap(MFpuMap, MFpuKeysARM, MFpuValuesARM, MFpuNumKeysARM);
StaticDataInitialized = true;
}
std::string ret = "-mattr=";
ArgMap::const_iterator I = MFpuMap.find(Val);
if (I != MFpuMap.end()) {
return ret + I->getValue();
}
return ret + '+' + Val;
}
/// ConvertToMAttr - Convert '-mfoo' and '-mno-bar' to '-mattr=+foo,-bar'.
std::string ConvertToMAttr(const StrVec& Opts) {
return ConvertToMAttrImpl(Opts);
}
}
|
