[llvm] Enable the use of SCCache for debug builds on Windows (PR #82371)

[Dave Abrahams via llvm-commits]

https://github.com/dabrahams created https://github.com/llvm/llvm-project/pull/82371

None

>From 9e206c0704a3fb997648ca189876cdfe1c1ec8d7 Mon Sep 17 00:00:00 2001
From: Dave Abrahams <dabrahams at adobe.com>
Date: Tue, 20 Feb 2024 07:26:29 -0800
Subject: [PATCH] Enable the use of SCCache for debug builds on Windows

---
 cmake/Modules/CMakePolicy.cmake | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/cmake/Modules/CMakePolicy.cmake b/cmake/Modules/CMakePolicy.cmake
index 0ec32ad8637f3d..bdbb836e56e8ed 100644
--- a/cmake/Modules/CMakePolicy.cmake
+++ b/cmake/Modules/CMakePolicy.cmake
@@ -10,3 +10,9 @@ endif()
 if(POLICY CMP0116)
   cmake_policy(SET CMP0116 OLD)
 endif()
+
++# Enable debug info compatible with SCCache
++# https://github.com/mozilla/sccache?tab=readme-ov-file#usage
++if(POLICY CMP0141)
++  cmake_policy(SET CMP0141 NEW)
++endif()