[clang] Reapply "[Clang][CMake] Use IRPGO instead of FE PGO for Cmake Caches" (PR #160711)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Aiden Grossman (boomanaiden154)

<details>
<summary>Changes</summary>

This reverts commit 18f7e03dd60d84b5da3403f10177323df01b6f92.

Reapplies #<!-- -->160133.

This was reverted originally because it was causing compilation crashes in ControlHeightReduction. It was reverted again because fix in CntrolHeightReduction was causing more problems. Everything should be in working order now, so relanding.

---
Full diff: https://github.com/llvm/llvm-project/pull/160711.diff


1 Files Affected:

- (modified) clang/cmake/caches/PGO.cmake (+1-1) 


``````````diff
diff --git a/clang/cmake/caches/PGO.cmake b/clang/cmake/caches/PGO.cmake
index 15bc755d110d1..d6471160037c1 100644
--- a/clang/cmake/caches/PGO.cmake
+++ b/clang/cmake/caches/PGO.cmake
@@ -5,7 +5,7 @@ set(LLVM_ENABLE_PROJECTS "clang;lld" CACHE STRING "")
 set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
 
 set(LLVM_TARGETS_TO_BUILD Native CACHE STRING "")
-set(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED ON CACHE BOOL "")
+set(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED IR CACHE BOOL "")
 set(CLANG_BOOTSTRAP_TARGETS
   generate-profdata
   stage2

``````````

</details>


https://github.com/llvm/llvm-project/pull/160711