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-rw-r--r--src/third_party/mac_headers/mach/machine.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/third_party/mac_headers/mach/machine.h b/src/third_party/mac_headers/mach/machine.h
index 91d9d709..5bb21e48 100644
--- a/src/third_party/mac_headers/mach/machine.h
+++ b/src/third_party/mac_headers/mach/machine.h
@@ -228,6 +228,7 @@ typedef integer_t cpu_threadtype_t;
#define CPU_SUBTYPE_X86_ALL ((cpu_subtype_t)3)
#define CPU_SUBTYPE_X86_64_ALL ((cpu_subtype_t)3)
#define CPU_SUBTYPE_X86_ARCH1 ((cpu_subtype_t)4)
+#define CPU_SUBTYPE_X86_64_H ((cpu_subtype_t)8) /* Haswell feature subset */
#define CPU_THREADTYPE_INTEL_HTT ((cpu_threadtype_t) 1)