From 722eb0d522383b720298c0a0c6999ffe1156ca87 Mon Sep 17 00:00:00 2001
From: Elliot Saba <staticfloat@gmail.com>
Date: Wed, 19 Oct 2016 11:42:31 -0700
Subject: [PATCH] Add `LLVM_LTO` make flag to build LLVM with Link-Time
 Optimization

---
 deps/llvm.mk | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/deps/llvm.mk b/deps/llvm.mk
index f7ab3a0483023..ebdd6f9599051 100644
--- a/deps/llvm.mk
+++ b/deps/llvm.mk
@@ -181,6 +181,11 @@ else
 LLVM_CC :=
 endif # LLVM_SANITIZE
 
+ifeq ($(LLVM_LTO),1)
+LLVM_CPPFLAGS += -flto
+LLVM_LDFLAGS += -flto
+endif # LLVM_LTO
+
 ifneq ($(LLVM_CXXFLAGS),)
 LLVM_FLAGS += CXXFLAGS="$(LLVM_CXXFLAGS)"
 LLVM_MFLAGS += CXXFLAGS="$(LLVM_CXXFLAGS)"