#include <intrin.h> // For __cpuidex()
#endif
#if !defined(__pnacl__) && !defined(__CLR_VER) && \
- !defined(__native_client__) && defined(_M_X64) && \
- defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219)
+ !defined(__native_client__) && \
+ defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219) && \
+ (defined(_M_IX86) || defined(_M_X64))
#include <immintrin.h> // For _xgetbv()
#endif
#if defined(_MSC_VER) && !defined(__clang__)
#if (_MSC_FULL_VER >= 160040219)
__cpuidex((int*)(cpu_info), info_eax, info_ecx);
-#elif defined(_M_IX86)
+#endif
+#if defined(_M_IX86)
__asm {
mov eax, info_eax
mov ecx, info_ecx
uint32 xcr0 = 0u;
#if defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219)
xcr0 = (uint32)(_xgetbv(0)); // VS2010 SP1 required.
-#elif defined(_M_IX86)
+#endif
+#if defined(_M_IX86) && defined(_MSC_VER)
__asm {
xor ecx, ecx // xcr 0
_asm _emit 0x0f _asm _emit 0x01 _asm _emit 0xd0 // For VS2010 and earlier.
mov xcr0, eax
}
-#elif defined(__i386__) || defined(__x86_64__)
+#endif
+#if defined(__i386__) || defined(__x86_64__)
asm(".byte 0x0f, 0x01, 0xd0" : "=a" (xcr0) : "c" (0) : "%edx");
#endif // defined(_MSC_VER)
return((xcr0 & 6) == 6); // Is ymm saved?
fclose(f);
return kCpuHasNEON;
}
+ // aarch64 uses asimd for Neon.
+ p = strstr(cpuinfo_line, " asimd");
+ if (p && (p[6] == ' ' || p[6] == '\n')) {
+ fclose(f);
+ return kCpuHasNEON;
+ }
}
}
fclose(f);
if (TestEnv("LIBYUV_DISABLE_FMA3")) {
cpu_info_ &= ~kCpuHasFMA3;
}
-#elif defined(__mips__) && defined(__linux__)
+#endif
+#if defined(__mips__) && defined(__linux__)
// Linux mips parse text file for dsp detect.
cpu_info_ = MipsCpuCaps("dsp"); // set kCpuHasMIPS_DSP.
#if defined(__mips_dspr2)
if (getenv("LIBYUV_DISABLE_MIPS_DSPR2")) {
cpu_info_ &= ~kCpuHasMIPS_DSPR2;
}
-#elif defined(__arm__)
+#endif
+#if defined(__arm__) || defined(__aarch64__)
// gcc -mfpu=neon defines __ARM_NEON__
// __ARM_NEON__ generates code that requires Neon. NaCL also requires Neon.
// For Linux, /proc/cpuinfo can be tested but without that assume Neon.
#if defined(__ARM_NEON__) || defined(__native_client__) || !defined(__linux__)
cpu_info_ = kCpuHasNEON;
+// For aarch64(arm64), /proc/cpuinfo's feature is not complete, e.g. no neon
+// flag in it.
+// So for aarch64, neon enabling is hard coded here.
+#endif
+#if defined(__aarch64__)
+ cpu_info_ = kCpuHasNEON;
#else
// Linux arm parse text file for neon detect.
cpu_info_ = ArmCpuCaps("/proc/cpuinfo");