[llvm] build_llvm_release.bat: add tarball export to x64 release (PR #79840)

[Benoît Amiaux via llvm-commits]

https://github.com/bamiaux updated https://github.com/llvm/llvm-project/pull/79840

>From 786a83692f173f617e614b2a90a75ddda33ab4f7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beno=C3=AEt=20Amiaux?= <benoit.amiaux at gmail.com>
Date: Sat, 27 Jan 2024 14:14:53 +0100
Subject: [PATCH] build_llvm_release.bat: add tarball export to x64 release

Like linux releases, export a tar.xz files containing most llvm tools,
including non toolchain utilities, llvm-config, llvm-link and others.

We do this by reconfiguring cmake one last time at the last step,
running the install target so we do not need to recompile anything.

Fix #51192
Fix #53052
---
 llvm/utils/release/build_llvm_release.bat | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/llvm/utils/release/build_llvm_release.bat b/llvm/utils/release/build_llvm_release.bat
index 67bb22de7606df..dc63fdac1e4adc 100755
--- a/llvm/utils/release/build_llvm_release.bat
+++ b/llvm/utils/release/build_llvm_release.bat
@@ -287,7 +287,16 @@ ninja check-sanitizer || ninja check-sanitizer || ninja check-sanitizer || exit
 ninja check-clang-tools || ninja check-clang-tools || ninja check-clang-tools || exit /b 1
 ninja check-clangd || ninja check-clangd || ninja check-clangd || exit /b 1
 ninja package || exit /b 1
+
+:: generate tarball with install toolchain only off
+set filename=clang+llvm-%version%-x86_64-pc-windows-msvc
+cmake -GNinja %cmake_flags% %cmake_profile_flags% -DLLVM_INSTALL_TOOLCHAIN_ONLY=OFF ^
+  -DCMAKE_INSTALL_PREFIX=%build_dir%/%filename% ..\llvm-project\llvm || exit /b 1
+ninja install || exit /b 1
+:: check llvm_config is present & returns something
+%build_dir%/%filename%/bin/llvm-config.exe --bindir || exit /b 1
 cd ..
+7z a -ttar -so %filename%.tar %filename% | 7z a -txz -si %filename%.tar.xz
 
 exit /b 0
 ::==============================================================================