runtime: enable more address bits on macOS/ARM64

Apparently macOS/ARM64 has 47-bit addresses, instead of 33-bit as
on ios/ARM64. Enable more address bits.

Updates #38485.

Change-Id: I8aa64ba22a3933e3d9c4fffd17d902b5f31c30e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/256918
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/runtime/mpagealloc_32bit.go b/src/runtime/mpagealloc_32bit.go
index 6658a900ac..90f1e54d6c 100644
--- a/src/runtime/mpagealloc_32bit.go
+++ b/src/runtime/mpagealloc_32bit.go
@@ -2,14 +2,14 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build 386 arm mips mipsle wasm darwin,arm64
+// +build 386 arm mips mipsle wasm ios,arm64
 
 // wasm is a treated as a 32-bit architecture for the purposes of the page
 // allocator, even though it has 64-bit pointers. This is because any wasm
 // pointer always has its top 32 bits as zero, so the effective heap address
 // space is only 2^32 bytes in size (see heapAddrBits).
 
-// darwin/arm64 is treated as a 32-bit architecture for the purposes of the
+// ios/arm64 is treated as a 32-bit architecture for the purposes of the
 // page allocator, even though it has 64-bit pointers and a 33-bit address
 // space (see heapAddrBits). The 33 bit address space cannot be rounded up
 // to 64 bits because there are too many summary levels to fit in just 33