From e23dce6c974477d3476bee5256a83a9aaea8eae4 Mon Sep 17 00:00:00 2001
From: Steven Wu <stevenwu@apple.com>
Date: Wed, 14 Jul 2021 13:29:15 -0700
Subject: [PATCH] [Support] Get correct number of physical cores on Apple
 Silicon

Fix a bug that `computeHostNumPhysicalCores` is fallback to default
unknown when building for Apple Silicon macs.

rdar://80533675

Reviewed By: arphaman

Differential Revision: https://reviews.llvm.org/D106012
---
 llvm/lib/Support/Host.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Support/Host.cpp b/llvm/lib/Support/Host.cpp
index 478351769705..1ecfef95fdff 100644
--- a/llvm/lib/Support/Host.cpp
+++ b/llvm/lib/Support/Host.cpp
@@ -1404,7 +1404,7 @@ int computeHostNumPhysicalCores() {
 }
 #elif defined(__linux__) && defined(__s390x__)
 int computeHostNumPhysicalCores() { return sysconf(_SC_NPROCESSORS_ONLN); }
-#elif defined(__APPLE__) && defined(__x86_64__)
+#elif defined(__APPLE__)
 #include <sys/param.h>
 #include <sys/sysctl.h>