From c80bbb46b1cb72a281acb5c2a8f337e9cf7592d4 Mon Sep 17 00:00:00 2001
From: Ivan Lozano <ivanlozano@google.com>
Date: Mon, 2 Mar 2020 16:48:15 -0500
Subject: [PATCH] Add -z separate-code to default ARM64 device flags

Removing XOM had the side effect of removing "-z separate-code", which
was needed to override a new default after a recent toolchain update.
This led to some performance regressions in some tests. For now, add
this flag to the global arm64 device flags to return to the previous
behavior.

Bug: 150506341
Test: m -j
Change-Id: I54787954141d133e245dfd259a37bf4c3c8e7caa
---
 cc/config/arm64_device.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cc/config/arm64_device.go b/cc/config/arm64_device.go
index 1ca1656d0..19aedd99d 100644
--- a/cc/config/arm64_device.go
+++ b/cc/config/arm64_device.go
@@ -39,6 +39,7 @@ var (
 	arm64Ldflags = []string{
 		"-Wl,-m,aarch64_elf64_le_vec",
 		"-Wl,--hash-style=gnu",
+		"-Wl,-z,separate-code",
 		"-fuse-ld=gold",
 		"-Wl,--icf=safe",
 	}