Build: Use more aggressive inlining for higher efficiency (#5026)

https://github.com/XTLS/Xray-core/pull/4952#issuecomment-3189847357

.github/workflows/release-win7.yml

@@ -94,11 +94,11 @@ jobs:
           mkdir -p build_assets
           COMMID=$(git describe --always --dirty)
           echo 'Building Xray for Windows 7...'
-          go build -o build_assets/xray.exe -trimpath -buildvcs=false -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+          go build -o build_assets/xray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
           echo 'CreateObject("Wscript.Shell").Run "xray.exe -config config.json",0' > build_assets/xray_no_window.vbs
           echo 'Start-Process -FilePath ".\xray.exe" -ArgumentList "-config .\config.json" -WindowStyle Hidden' > build_assets/xray_no_window.ps1
           # The line below is for without running conhost.exe version. Commented for not being used. Provided for reference.
-          # go build -o build_assets/wxray.exe -trimpath -buildvcs=false -ldflags="-H windowsgui -X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+          # go build -o build_assets/wxray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-H windowsgui -X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
 
       - name: Restore Geodat Cache
         uses: actions/cache/restore@v4

.github/workflows/release.yml

@@ -190,17 +190,19 @@ jobs:
           COMMID=$(git describe --always --dirty)
           if [[ ${GOOS} == 'windows' ]]; then
             echo 'Building Xray for Windows...'
-            go build -o build_assets/xray.exe -trimpath -buildvcs=false -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            go build -o build_assets/xray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
             echo 'CreateObject("Wscript.Shell").Run "xray.exe -config config.json",0' > build_assets/xray_no_window.vbs
             echo 'Start-Process -FilePath ".\xray.exe" -ArgumentList "-config .\config.json" -WindowStyle Hidden' > build_assets/xray_no_window.ps1
             # The line below is for without running conhost.exe version. Commented for not being used. Provided for reference.
-            # go build -o build_assets/wxray.exe -trimpath -buildvcs=false -ldflags="-H windowsgui -X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            # go build -o build_assets/wxray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-H windowsgui -X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
           else
             echo 'Building Xray...'
-            go build -o build_assets/xray -trimpath -buildvcs=false -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
             if [[ ${GOARCH} == 'mips' || ${GOARCH} == 'mipsle' ]]; then
+              go build -o build_assets/xray -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
               echo 'Building soft-float Xray for MIPS/MIPSLE 32-bit...'
-              GOMIPS=softfloat go build -o build_assets/xray_softfloat -trimpath -buildvcs=false -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+              GOMIPS=softfloat go build -o build_assets/xray_softfloat -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            else
+              go build -o build_assets/xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
             fi
           fi
 

README.md

@@ -165,7 +165,13 @@ CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -ldflags="-s -w -buildi
 Make sure that you are using the same Go version, and remember to set the git commit id (7 bytes):
 
 ```bash
-CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid=" -v ./main
+CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid=" -v ./main
+```
+
+If you are compiling a 32-bit MIPS/MIPSLE target, use this command instead:
+
+```bash
+CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid=" -v ./main
 ```
 
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