cflags: Upgrade -mavx -> -mavx2
Some new use cases in Trace Processor require
AVX2. It seems supported by most CPUs since 2013
according to
https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#CPUs_with_AVX2
Bug: 205302474
Change-Id: I8d6a43d6c8544b454b7e1b8220baced06aef8f67
diff --git a/src/base/utils.cc b/src/base/utils.cc
index a614fd7..0ec6cdf 100644
--- a/src/base/utils.cc
+++ b/src/base/utils.cc
@@ -99,16 +99,21 @@
(ecx & (1u << 28)) && // AVX supported in hardware
((GetXCR0EAX() & xcr0_avx_mask) == xcr0_avx_mask);
- if (!have_sse4_2 || !have_popcnt || !have_avx) {
+ // Get level 7 features (eax = 7 and ecx= 0), to check for AVX2 support.
+ // (See Intel 64 and IA-32 Architectures Software Developer's Manual
+ // Volume 2A: Instruction Set Reference, A-M CPUID).
+ PERFETTO_GETCPUID(eax, ebx, ecx, edx, 7, 0);
+ const bool have_avx2 = have_avx && ((ebx >> 5) & 0x1);
+
+ if (!have_sse4_2 || !have_popcnt || !have_avx2) {
fprintf(
stderr,
- "This executable requires a X86_64 cpu that supports SSE4.2 and AVX.\n"
+ "This executable requires a X86_64 cpu that supports SSE4.2 and AVX2.\n"
#if PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)
"On MacOS, this might be caused by running x86_64 binaries on arm64.\n"
"See https://github.com/google/perfetto/issues/294 for more.\n"
#endif
- "Rebuild with enable_perfetto_x64_cpu_opt=false (ebx=%x, ecx=%x).\n",
- ebx, ecx);
+ "Rebuild with enable_perfetto_x64_cpu_opt=false.\n");
_exit(126);
}
}
