From d3af19bafbafa654dbdb066d308a25307d45ea82 Mon Sep 17 00:00:00 2001
From: Congyu <52687642+Congyuwang@users.noreply.github.com>
Date: Fri, 1 Mar 2024 19:56:55 +0800
Subject: [PATCH] Windows lto (#113)

* enable lto for windows build

* drop support for win32
---
 .github/workflows/CI.yml | 8 +++++++-
 .github/workflows/PR.yml | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 0f48c57..cf04287 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -58,7 +58,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        target: [x64, x86]
+        target: [x64]
         py_version: [3.7, 3.8, 3.9, "3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v2
@@ -83,6 +83,12 @@ jobs:
           args: --release --out dist
         env:
           LIBCLANG_PATH: ${{ runner.temp }}/llvm-17.0/lib
+          CC: ${{ runner.temp }}/llvm-17.0/bin/clang-cl
+          CXX: ${{ runner.temp }}/llvm-17.0/bin/clang-cl
+          AR: ${{ runner.temp }}/llvm-17.0/bin/llvm-lib
+          CFLAGS: "/clang:-flto=thin /clang:-O3 /clang:-fuse-ld=lld-link"
+          CXXFLAGS: "/clang:-flto=thin /clang:-O3 /clang:-fuse-ld=lld-link"
+          RUSTFLAGS: "-Clinker-plugin-lto -Clinker=lld-link"
       - name: Install built wheel and test
         run: |
           pip install rocksdict --no-index --find-links dist --force-reinstall || true
diff --git a/.github/workflows/PR.yml b/.github/workflows/PR.yml
index 639fbdf..a67bffc 100644
--- a/.github/workflows/PR.yml
+++ b/.github/workflows/PR.yml
@@ -58,7 +58,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        target: [x64, x86]
+        target: [x64]
         py_version: [3.7, 3.8, 3.9, "3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v2
@@ -83,6 +83,12 @@ jobs:
           args: --release --out dist
         env:
           LIBCLANG_PATH: ${{ runner.temp }}/llvm-17.0/lib
+          CC: ${{ runner.temp }}/llvm-17.0/bin/clang-cl
+          CXX: ${{ runner.temp }}/llvm-17.0/bin/clang-cl
+          AR: ${{ runner.temp }}/llvm-17.0/bin/llvm-lib
+          CFLAGS: "/clang:-flto=thin /clang:-O3 /clang:-fuse-ld=lld-link"
+          CXXFLAGS: "/clang:-flto=thin /clang:-O3 /clang:-fuse-ld=lld-link"
+          RUSTFLAGS: "-Clinker-plugin-lto -Clinker=lld-link"
       - name: Install built wheel and test
         run: |
           pip install rocksdict --no-index --find-links dist --force-reinstall || true