Add reference to CPUID

Author: gangliao

paddle/utils/CpuId.cpp

@@ -34,7 +34,7 @@ static InitFunction __init_simd_flags(
 
 SIMDFlags::SIMDFlags() {
     unsigned int cpuInfo[4];
-
+    // CPUID: https://en.wikipedia.org/wiki/CPUID
     CPUID(cpuInfo, 0x00000001);
     simd_flags_ |= cpuInfo[3] & (1 << 25) ? SIMD_SSE   : SIMD_NONE;
     simd_flags_ |= cpuInfo[3] & (1 << 26) ? SIMD_SSE2  : SIMD_NONE;

paddle/utils/CpuId.h

@@ -61,7 +61,7 @@ class SIMDFlags final {
 #define HAS_SSE3     SIMDFlags::instance()->isSSE3()
 #define HAS_SSSE3    SIMDFlags::instance()->isSSSE3()
 #define HAS_SSE41    SIMDFlags::instance()->isSSE41()
-#define HAS_SSS42    SIMDFlags::instance()->isSSE42()
+#define HAS_SSE42    SIMDFlags::instance()->isSSE42()
 #define HAS_FMA3     SIMDFlags::instance()->isFMA3()
 #define HAS_FMA4     SIMDFlags::instance()->isFMA4()
 #define HAS_AVX      SIMDFlags::instance()->isAVX()

paddle/utils/tests/test_SIMDFlags.cpp

@@ -20,17 +20,14 @@ using namespace paddle; // NOLINT
 
 TEST(SIMDFlags, gccTest) {
 #if (defined(__GNUC__) || defined(__GNUG__)) && !(defined(__clang__))
-    CHECK(__builtin_cpu_supports("sse") == HAS_SSE);
-    CHECK(__builtin_cpu_supports("sse2") == HAS_SSE2);
-    CHECK(__builtin_cpu_supports("sse3") == HAS_SSE3);
-    CHECK(__builtin_cpu_supports("ssse3")== HAS_SSSE3);
+    CHECK(__builtin_cpu_supports("sse")   == HAS_SSE);
+    CHECK(__builtin_cpu_supports("sse2")  == HAS_SSE2);
+    CHECK(__builtin_cpu_supports("sse3")  == HAS_SSE3);
+    CHECK(__builtin_cpu_supports("ssse3") == HAS_SSSE3);
     CHECK(__builtin_cpu_supports("sse4.1")== HAS_SSE41);
     CHECK(__builtin_cpu_supports("sse4.2")== HAS_SSE42);
-    CHECK(__builtin_cpu_supports("fma3")== HAS_FMA3);
-    CHECK(__builtin_cpu_supports("fma4")== HAS_FMA4);
-    CHECK(__builtin_cpu_supports("avx")== HAS_AVX);
-    CHECK(__builtin_cpu_supports("avx2")== HAS_AVX2);
-    CHECK(__builtin_cpu_supports("avx512f")== HAS_AVX512);
+    CHECK(__builtin_cpu_supports("avx")   == HAS_AVX);
+    CHECK(__builtin_cpu_supports("avx2")  == HAS_AVX2);
 #endif
 }