[clang] Revert "[Fuchsia] Support PGO" (PR #126293)

[Paul Kirth via cfe-commits]

https://github.com/ilovepi created https://github.com/llvm/llvm-project/pull/126293

Reverts llvm/llvm-project#120323

This breaks some internal Fuchsia builders. We can reland again later, once that is addresed.

>From 9611deb1401eb27477ae438ed257fccc87a395b7 Mon Sep 17 00:00:00 2001
From: Paul Kirth <paulkirth at google.com>
Date: Fri, 7 Feb 2025 11:25:29 -0800
Subject: [PATCH] Revert "[Fuchsia] Support PGO (#120323)"

This reverts commit 1438c8d68ddaacba4a95a02b66ffbae2ea586993.
---
 .../caches/Fuchsia-stage2-instrumented.cmake  | 44 ---------------
 clang/cmake/caches/Fuchsia.cmake              | 55 ++++++++-----------
 2 files changed, 23 insertions(+), 76 deletions(-)
 delete mode 100644 clang/cmake/caches/Fuchsia-stage2-instrumented.cmake

diff --git a/clang/cmake/caches/Fuchsia-stage2-instrumented.cmake b/clang/cmake/caches/Fuchsia-stage2-instrumented.cmake
deleted file mode 100644
index b3c3b63066363c4..000000000000000
--- a/clang/cmake/caches/Fuchsia-stage2-instrumented.cmake
+++ /dev/null
@@ -1,44 +0,0 @@
-# This file sets up a CMakeCache for the second stage of a Fuchsia toolchain build.
-
-include(${CMAKE_CURRENT_LIST_DIR}/Fuchsia-stage2.cmake)
-
-if(NOT APPLE)
-  set(BOOTSTRAP_LLVM_ENABLE_LLD ON CACHE BOOL "")
-endif()
-
-set(CLANG_BOOTSTRAP_TARGETS
-  check-all
-  check-clang
-  check-lld
-  check-llvm
-  clang
-  clang-test-depends
-  toolchain-distribution
-  install-toolchain-distribution
-  install-toolchain-distribution-stripped
-  install-toolchain-distribution-toolchain
-  lld-test-depends
-  llvm-config
-  llvm-test-depends
-  test-depends
-  test-suite CACHE STRING "")
-
-get_cmake_property(variableNames VARIABLES)
-foreach(variableName ${variableNames})
-  if(variableName MATCHES "^STAGE2_")
-    string(REPLACE "STAGE2_" "" new_name ${variableName})
-    list(APPEND EXTRA_ARGS "-D${new_name}=${${variableName}}")
-  endif()
-endforeach()
-
-set(CLANG_PGO_TRAINING_DEPS
-  builtins
-  runtimes
-  CACHE STRING "")
-
-# Setup the bootstrap build.
-set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "")
-set(CLANG_BOOTSTRAP_CMAKE_ARGS
-  ${EXTRA_ARGS}
-  -C ${CMAKE_CURRENT_LIST_DIR}/Fuchsia-stage2.cmake
-  CACHE STRING "")
diff --git a/clang/cmake/caches/Fuchsia.cmake b/clang/cmake/caches/Fuchsia.cmake
index 373b7ddd6e3449d..83336589da305d2 100644
--- a/clang/cmake/caches/Fuchsia.cmake
+++ b/clang/cmake/caches/Fuchsia.cmake
@@ -126,16 +126,6 @@ else()
   set(LIBCXX_ENABLE_STATIC_ABI_LIBRARY ON CACHE BOOL "")
   set(LIBCXX_HARDENING_MODE "none" CACHE STRING "")
   set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
-  set(COMPILER_RT_BUILD_LIBFUZZER OFF CACHE BOOL "")
-  set(COMPILER_RT_BUILD_PROFILE ON CACHE BOOL "")
-  set(COMPILER_RT_BUILD_SANITIZERS OFF CACHE BOOL "")
-  set(COMPILER_RT_BUILD_XRAY OFF CACHE BOOL "")
-  set(COMPILER_RT_USE_BUILTINS_LIBRARY ON CACHE BOOL "")
-  set(COMPILER_RT_DEFAULT_TARGET_ONLY ON CACHE BOOL "")
-  set(SANITIZER_CXX_ABI "libc++" CACHE STRING "")
-  set(SANITIZER_CXX_ABI_INTREE ON CACHE BOOL "")
-  set(SANITIZER_TEST_CXX "libc++" CACHE STRING "")
-  set(SANITIZER_TEST_CXX_INTREE ON CACHE BOOL "")
   set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
   set(RUNTIMES_CMAKE_ARGS "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.13;-DCMAKE_OSX_ARCHITECTURES=arm64|x86_64" CACHE STRING "")
 endif()
@@ -174,29 +164,34 @@ endif()
 
 set(BOOTSTRAP_LLVM_ENABLE_LLD ON CACHE BOOL "")
 set(BOOTSTRAP_LLVM_ENABLE_LTO ON CACHE BOOL "")
-set(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED ON CACHE BOOL "")
 
 set(_FUCHSIA_BOOTSTRAP_TARGETS
-  generate-profdata
-  stage2
-  stage2-toolchain-distribution
-  stage2-install-toolchain-distribution
-  stage2-install-toolchain-distribution-stripped
-  stage2-install-toolchain-distribution-toolchain
-  stage2-check-all
-  stage2-check-lld
-  stage2-check-llvm
-  stage2-check-clang
-  stage2-test-suite)
+  check-all
+  check-clang
+  check-lld
+  check-llvm
+  check-polly
+  llvm-config
+  clang-test-depends
+  lld-test-depends
+  llvm-test-depends
+  test-suite
+  test-depends
+  toolchain-distribution
+  install-toolchain-distribution
+  install-toolchain-distribution-stripped
+  install-toolchain-distribution-toolchain
+  clang)
 
 if(FUCHSIA_ENABLE_LLDB)
   list(APPEND _FUCHSIA_ENABLE_PROJECTS lldb)
   list(APPEND _FUCHSIA_BOOTSTRAP_TARGETS
-    stage2-check-lldb
-    stage2-debugger-distribution
-    stage2-install-debugger-distribution
-    stage2-install-debugger-distribution-stripped
-    stage2-install-debugger-distribution-toolchain)
+    check-lldb
+    lldb-test-depends
+    debugger-distribution
+    install-debugger-distribution
+    install-debugger-distribution-stripped
+    install-debugger-distribution-toolchain)
 endif()
 
 set(LLVM_ENABLE_PROJECTS ${_FUCHSIA_ENABLE_PROJECTS} CACHE STRING "")
@@ -205,7 +200,6 @@ set(CLANG_BOOTSTRAP_TARGETS ${_FUCHSIA_BOOTSTRAP_TARGETS} CACHE STRING "")
 get_cmake_property(variableNames VARIABLES)
 foreach(variableName ${variableNames})
   if(variableName MATCHES "^STAGE2_")
-    list(APPEND EXTRA_ARGS "-D${variableName}=${${variableName}}")
     string(REPLACE "STAGE2_" "" new_name ${variableName})
     string(REPLACE ";" "|" value "${${variableName}}")
     list(APPEND EXTRA_ARGS "-D${new_name}=${value}")
@@ -215,9 +209,6 @@ endforeach()
 # TODO: This is a temporary workaround until we figure out the right solution.
 set(BOOTSTRAP_LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
 
-set(LLVM_BUILTIN_TARGETS "default" CACHE STRING "")
-set(LLVM_RUNTIME_TARGETS "default" CACHE STRING "")
-
 # Setup the bootstrap build.
 set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "")
 set(CLANG_BOOTSTRAP_EXTRA_DEPS
@@ -226,5 +217,5 @@ set(CLANG_BOOTSTRAP_EXTRA_DEPS
   CACHE STRING "")
 set(CLANG_BOOTSTRAP_CMAKE_ARGS
   ${EXTRA_ARGS}
-  -C ${CMAKE_CURRENT_LIST_DIR}/Fuchsia-stage2-instrumented.cmake
+  -C ${CMAKE_CURRENT_LIST_DIR}/Fuchsia-stage2.cmake
   CACHE STRING "")