/home/roberto/qt5_coco/qtsdk/qtbase/src/corelib/tools/qsimd.cpp

tools/qsimd.cpp

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1 -

2 static int maxBasicCpuidSupported() -

3 { -

4 -

5 qintptr tmp1; -

6 int result; -

7 asm ("xchg " "%%rbx"", %1\n" -

8 "cpuid\n" -

9 "xchg " "%%rbx"", %1\n" -

10 : "=&a" (result), "=&r" (tmp1) -

11 : "0" (0) -

12 : "ecx", "edx"); -

return result;

executed: return result;

Execution Count:4

14 } -

15 -

16 static void cpuidFeatures01(uint &ecx, uint &edx) -

17 { -

18 -

19 qintptr tmp1; -

20 asm ("xchg " "%%rbx"", %2\n" -

21 "cpuid\n" -

22 "xchg " "%%rbx"", %2\n" -

23 : "=&c" (ecx), "=&d" (edx), "=&r" (tmp1) -

24 : "a" (1)); -

25 -

26 -

27 -

28 -

29 -

30 -

}

executed: }

Execution Count:4

32 -

33 -

34 -

35 -

36 -

37 static void cpuidFeatures07_00(uint &ebx) -

38 { -

39 -

40 quintptr rbx; -

41 asm ("xchg " "%%rbx"", %0\n" -

42 "cpuid\n" -

43 "xchg " "%%rbx"", %0\n" -

44 : "=&r" (rbx) -

45 : "a" (7), "c" (0) -

46 : "%edx"); -

47 ebx = rbx; -

48 -

49 -

50 -

51 -

52 -

}

executed: }

Execution Count:4

54 -

55 -

56 -

57 -

58 -

59 static void xgetbv(uint in, uint &eax, uint &edx) -

60 { -

61 -

62 -

63 -

64 -

65 -

66 asm (".byte 0x0F, 0x01, 0xD0" -

67 : "=a" (eax), "=d" (edx) -

68 : "c" (in)); -

69 -

}

never executed: }

71 -

72 static inline uint detectProcessorFeatures() -

73 { -

74 uint features = 0; -

75 int cpuidLevel = maxBasicCpuidSupported(); -

if (cpuidLevel < 1)

partially evaluated: cpuidLevel < 1

TRUE	FALSE
no Evaluation Count:0	yes Evaluation Count:4

0-4

return 0;

never executed: return 0;

78 -

79 uint cpuid01ECX = 0, cpuid01EDX = 0; -

80 cpuidFeatures01(cpuid01ECX, cpuid01EDX); -

81 -

82 -

83 -

84 -

85 -

86 -

87 features = SSE2; -

88 -

89 -

90 -

if (cpuid01ECX & (1u))

partially evaluated: cpuid01ECX & (1u)

TRUE	FALSE
yes Evaluation Count:4	no Evaluation Count:0

0-4

features |= SSE3;

executed: features |= SSE3;

Execution Count:4

if (cpuid01ECX & (1u << 9))

partially evaluated: cpuid01ECX & (1u << 9)

TRUE	FALSE
yes Evaluation Count:4	no Evaluation Count:0

0-4

features |= SSSE3;

executed: features |= SSSE3;

Execution Count:4

if (cpuid01ECX & (1u << 19))

partially evaluated: cpuid01ECX & (1u << 19)

TRUE	FALSE
yes Evaluation Count:4	no Evaluation Count:0

0-4

features |= SSE4_1;

executed: features |= SSE4_1;

Execution Count:4

if (cpuid01ECX & (1u << 20))

partially evaluated: cpuid01ECX & (1u << 20)

TRUE	FALSE
yes Evaluation Count:4	no Evaluation Count:0

0-4

features |= SSE4_2;

executed: features |= SSE4_2;

Execution Count:4

if (cpuid01ECX & (1u << 25))

partially evaluated: cpuid01ECX & (1u << 25)

TRUE	FALSE
yes Evaluation Count:4	no Evaluation Count:0

0-4

100

features |= 0;

executed: features |= 0;

Execution Count:4

101 -

102 uint xgetbvA = 0, xgetbvD = 0; -

103

if (cpuid01ECX & (1u << 27)) {

partially evaluated: cpuid01ECX & (1u << 27)

TRUE	FALSE
no Evaluation Count:0	yes Evaluation Count:4

0-4

104 -

105 xgetbv(0, xgetbvA, xgetbvD); -

106

}

never executed: }

107 -

108 uint cpuid0700EBX = 0; -

109

if (cpuidLevel >= 7)

partially evaluated: cpuidLevel >= 7

TRUE	FALSE
yes Evaluation Count:4	no Evaluation Count:0

0-4

110

cpuidFeatures07_00(cpuid0700EBX);

executed: cpuidFeatures07_00(cpuid0700EBX);

Execution Count:4

111 -

112

if ((xgetbvA & 6) == 6) {

partially evaluated: (xgetbvA & 6) == 6

TRUE	FALSE
no Evaluation Count:0	yes Evaluation Count:4

0-4

113 -

114

if (cpuid01ECX & (1u << 28))

never evaluated: cpuid01ECX & (1u << 28)

115

features |= AVX;

never executed: features |= AVX;

116 -

117

if (cpuid0700EBX & (1u << 5))

never evaluated: cpuid0700EBX & (1u << 5)

118

features |= AVX2;

never executed: features |= AVX2;

119

}

never executed: }

120 -

121

if (cpuid0700EBX & (1u << 4))

partially evaluated: cpuid0700EBX & (1u << 4)

TRUE	FALSE
no Evaluation Count:0	yes Evaluation Count:4

0-4

122

features |= HLE;

never executed: features |= HLE;

123

if (cpuid0700EBX & (1u << 11))

partially evaluated: cpuid0700EBX & (1u << 11)

TRUE	FALSE
no Evaluation Count:0	yes Evaluation Count:4

0-4

124

features |= RTM;

never executed: features |= RTM;

125 -

126

return features;

executed: return features;

Execution Count:4

127 } -

128 static const char features_string[] = -

129 " iwmmxt\0" -

130 " neon\0" -

131 " sse2\0" -

132 " sse3\0" -

133 " ssse3\0" -

134 " sse4.1\0" -

135 " sse4.2\0" -

136 " avx\0" -

137 " avx2\0" -

138 " hle\0" -

139 " rtm\0" -

140 "\0"; -

141 -

142 static const int features_indices[] = { -

143 0, 8, 14, 20, 26, 33, 41, 49, -

144 54, 60, 65, -1 -

145 }; -

146 -

147 -

148 static const int features_count = (sizeof features_indices - 1) / (sizeof features_indices[0]); -

149 -

150 -

151 -

152 static const uint minFeature = qCompilerCpuFeatures & ~HLE; -

153 QBasicAtomicInt qt_cpu_features = { (0) }; -

154 -

155 void qDetectCpuFeatures() -

156 { -

157 uint f = detectProcessorFeatures(); -

158 QByteArray disable = qgetenv("QT_NO_CPU_FEATURE"); -

159

if (!disable.isEmpty()) {

partially evaluated: !disable.isEmpty()

TRUE	FALSE
no Evaluation Count:0	yes Evaluation Count:4

0-4

160 disable.prepend(' '); -

161

for (int i = 0; i < features_count; ++i) {

never evaluated: i < features_count

162

if (disable.contains(features_string + features_indices[i]))

never evaluated: disable.contains(features_string + features_indices[i])

163

f &= ~(1 << i);

never executed: f &= ~(1 << i);

164

}

never executed: }

165

}

never executed: }

166 -

167

if (minFeature != 0 && (f & minFeature) != minFeature) {

partially evaluated: minFeature != 0

TRUE	FALSE
yes Evaluation Count:4	no Evaluation Count:0

partially evaluated: (f & minFeature) != minFeature

TRUE	FALSE
no Evaluation Count:0	yes Evaluation Count:4

0-4

168 uint missing = minFeature & ~f; -

169 fprintf(stderr, "Incompatible processor. This Qt build requires the following features:\n "); -

170

for (int i = 0; i < features_count; ++i) {

never evaluated: i < features_count

171

if (missing & (1 << i))

never evaluated: missing & (1 << i)

172

fprintf(stderr, "%s", features_string + features_indices[i]);

never executed: fprintf(stderr, "%s", features_string + features_indices[i]);

173

}

never executed: }

174 fprintf(stderr, "\n"); -

175 fflush(stderr); -

176 QMessageLogger("tools/qsimd.cpp", 423, __PRETTY_FUNCTION__).fatal("Aborted. Incompatible processor: missing feature 0x%x -%s.", missing, -

177 features_string + features_indices[ffs(missing) - 1]); -

178

}

never executed: }

179 -

180 qt_cpu_features.store(f | QSimdInitialized); -

181

}

executed: }

Execution Count:4

182 -

183 void qDumpCPUFeatures() -

184 { -

185 uint features = qCpuFeatures(); -

186 printf("Processor features: "); -

187

for (int i = 0; i < features_count; ++i) {

never evaluated: i < features_count

188

if (features & (1 << i))

never evaluated: features & (1 << i)

189 printf("%s%s", features_string + features_indices[i], 0

190

minFeature & (1 << i) ? "[required]" : "");

never executed: printf("%s%s", features_string + features_indices[i], minFeature & (1 << i) ? "[required]" : "");

191

}

never executed: }

192 puts(""); -

193

}

never executed: }

194 -

195 -

196 -

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