From c38bb96a2c1e3b9e536584403e2acd9623b02b92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mat=C3=ADas=20Locatti?=
 <42481638+goldenx86@users.noreply.github.com>
Date: Mon, 27 Feb 2023 01:01:44 -0300
Subject: [PATCH] Partially apply LTO to only core and video_core projects.

---
 .ci/templates/build-msvc.yml  | 2 +-
 CMakeLists.txt                | 2 ++
 src/core/CMakeLists.txt       | 4 ++++
 src/video_core/CMakeLists.txt | 4 ++++
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/.ci/templates/build-msvc.yml b/.ci/templates/build-msvc.yml
index c379dd757..427028e08 100644
--- a/.ci/templates/build-msvc.yml
+++ b/.ci/templates/build-msvc.yml
@@ -9,7 +9,7 @@ parameters:
 steps:
 - script: choco install vulkan-sdk
   displayName: 'Install vulkan-sdk'
-- script: refreshenv && mkdir build && cd build && cmake -E env CXXFLAGS="/Gw /GA /Gr /Ob2" cmake -G "Visual Studio 17 2022" -A x64 -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -DCMAKE_POLICY_DEFAULT_CMP0069=NEW -DYUZU_USE_BUNDLED_QT=1 -DYUZU_USE_BUNDLED_SDL2=1 -DYUZU_USE_QT_WEB_ENGINE=ON -DENABLE_COMPATIBILITY_LIST_DOWNLOAD=ON -DYUZU_ENABLE_COMPATIBILITY_REPORTING=${COMPAT} -DYUZU_TESTS=OFF -DUSE_DISCORD_PRESENCE=ON -DENABLE_QT_TRANSLATION=ON -DDISPLAY_VERSION=${{ parameters['version'] }} -DCMAKE_BUILD_TYPE=Release -DYUZU_CRASH_DUMPS=ON .. && cd ..
+- script: refreshenv && mkdir build && cd build && cmake -E env CXXFLAGS="/Gw /GA /Gr /Ob2" cmake -G "Visual Studio 17 2022" -A x64 -DCMAKE_POLICY_DEFAULT_CMP0069=NEW -DENABLE_LTO=ON -DYUZU_USE_BUNDLED_QT=1 -DYUZU_USE_BUNDLED_SDL2=1 -DYUZU_USE_QT_WEB_ENGINE=ON -DENABLE_COMPATIBILITY_LIST_DOWNLOAD=ON -DYUZU_ENABLE_COMPATIBILITY_REPORTING=${COMPAT} -DYUZU_TESTS=OFF -DUSE_DISCORD_PRESENCE=ON -DENABLE_QT_TRANSLATION=ON -DDISPLAY_VERSION=${{ parameters['version'] }} -DCMAKE_BUILD_TYPE=Release -DYUZU_CRASH_DUMPS=ON .. && cd ..
   displayName: 'Configure CMake'
 - task: MSBuild@1
   displayName: 'Build'
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 10a3de9e2..274eebe8a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -56,6 +56,8 @@ option(YUZU_USE_BUNDLED_VCPKG "Use vcpkg for yuzu dependencies" "${MSVC}")
 
 option(YUZU_CHECK_SUBMODULES "Check if submodules are present" ON)
 
+option(YUZU_ENABLE_LTO "Enable link-time optimization" OFF)
+
 CMAKE_DEPENDENT_OPTION(YUZU_USE_FASTER_LD "Check if a faster linker is available" ON "NOT WIN32" OFF)
 
 if (YUZU_USE_BUNDLED_VCPKG)
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index ff5502d87..70fa1edf5 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -861,3 +861,7 @@ endif()
 if (YUZU_USE_PRECOMPILED_HEADERS)
     target_precompile_headers(core PRIVATE precompiled_headers.h)
 endif()
+
+if (YUZU_ENABLE_LTO)
+  set_property(TARGET core PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+endif()
diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt
index 4742bcbe9..e904573d7 100644
--- a/src/video_core/CMakeLists.txt
+++ b/src/video_core/CMakeLists.txt
@@ -330,3 +330,7 @@ endif()
 if (YUZU_USE_PRECOMPILED_HEADERS)
     target_precompile_headers(video_core PRIVATE precompiled_headers.h)
 endif()
+
+if (YUZU_ENABLE_LTO)
+  set_property(TARGET video_core PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+endif()