Revert "[NPM][CGSCC] FunctionAnalysisManagerCGSCCProxy: do not clear immutable function passes"

This reverts commit 5eaeb0f.

It appears there are analyses that assume clearing - example:
https://lab.llvm.org/buildbot#builders/36/builds/5964

Author: mtrofin

clang/test/CodeGen/thinlto-distributed-newpm.ll

@@ -12,7 +12,7 @@
 ; RUN: %clang -target x86_64-grtev4-linux-gnu \
 ; RUN:   -O2 -fexperimental-new-pass-manager -Xclang -fdebug-pass-manager \
 ; RUN:   -c -fthinlto-index=%t.o.thinlto.bc \
-; RUN:   -o %t.native.o -x ir %t.o 2>&1 | FileCheck -check-prefix=CHECK-O %s --dump-input=fail
+; RUN:   -o %t.native.o -x ir %t.o 2>&1 | FileCheck -check-prefixes=CHECK-O,CHECK-O2 %s --dump-input=fail
 
 ; RUN: %clang -target x86_64-grtev4-linux-gnu \
 ; RUN:   -O3 -fexperimental-new-pass-manager -Xclang -fdebug-pass-manager \
@@ -70,19 +70,24 @@
 ; CHECK-O: Starting CGSCC pass manager run.
 ; CHECK-O: Running pass: InlinerPass on (main)
 ; CHECK-O: Running pass: PostOrderFunctionAttrsPass on (main)
-; CHECK-O: Invalidating analysis: DominatorTreeAnalysis on main
-; CHECK-O: Invalidating analysis: BasicAA on main
-; CHECK-O: Invalidating analysis: AAManager on main
+; CHECK-O: Clearing all analysis results for: main
 ; CHECK-O3: Running pass: ArgumentPromotionPass on (main)
+; CHECK-O3: Running analysis: TargetIRAnalysis on main
 ; CHECK-O: Starting {{.*}}Function pass manager run.
 ; CHECK-O: Running pass: SROA on main
 ; These next two can appear in any order since they are accessed as parameters
 ; on the same call to SROA::runImpl
 ; CHECK-O-DAG: Running analysis: DominatorTreeAnalysis on main
+; CHECK-O-DAG: Running analysis: AssumptionAnalysis on main
 ; CHECK-O: Running pass: EarlyCSEPass on main
+; CHECK-O: Running analysis: TargetLibraryAnalysis on main
+; CHECK-O2: Running analysis: TargetIRAnalysis on main
 ; CHECK-O: Running analysis: MemorySSAAnalysis on main
 ; CHECK-O: Running analysis: AAManager on main
 ; CHECK-O: Running analysis: BasicAA on main
+; CHECK-O: Running analysis: ScopedNoAliasAA on main
+; CHECK-O: Running analysis: TypeBasedAA on main
+; CHECK-O: Running analysis: OuterAnalysisManagerProxy
 ; CHECK-O: Running pass: SpeculativeExecutionPass on main
 ; CHECK-O: Running pass: JumpThreadingPass on main
 ; CHECK-O: Running analysis: LazyValueAnalysis on main
@@ -91,6 +96,7 @@
 ; CHECK-O: Running pass: SimplifyCFGPass on main
 ; CHECK-O3: Running pass: AggressiveInstCombinePass on main
 ; CHECK-O: Running pass: InstCombinePass on main
+; CHECK-O: Running analysis: OptimizationRemarkEmitterAnalysis on main
 ; CHECK-O: Running pass: LibCallsShrinkWrapPass on main
 ; CHECK-O: Running pass: TailCallElimPass on main
 ; CHECK-O: Running pass: SimplifyCFGPass on main

llvm/lib/Analysis/CGSCCPassManager.cpp

@@ -720,7 +720,7 @@ bool FunctionAnalysisManagerCGSCCProxy::Result::invalidate(
   auto PAC = PA.getChecker<FunctionAnalysisManagerCGSCCProxy>();
   if (!PAC.preserved() && !PAC.preservedSet<AllAnalysesOn<LazyCallGraph::SCC>>()) {
     for (LazyCallGraph::Node &N : C)
-      FAM->invalidate(N.getFunction(), PA);
+      FAM->clear(N.getFunction(), N.getFunction().getName());
 
     return false;
   }

llvm/unittests/Analysis/CGSCCPassManagerTest.cpp

@@ -1942,30 +1942,5 @@ TEST_F(CGSCCPassManagerTest, TestInsertionOfNewNonTrivialCallEdge) {
   ASSERT_TRUE(Ran);
 }
 
-TEST_F(CGSCCPassManagerTest, TestFunctionPassesAreQueriedForInvalidation) {
-  std::unique_ptr<Module> M = parseIR("define void @f() { ret void }");
-  CGSCCPassManager CGPM;
-  bool SCCCalled = false;
-  FunctionPassManager FPM;
-  int ImmRuns = 0;
-  FAM.registerPass([&] { return TestImmutableFunctionAnalysis(ImmRuns); });
-  FPM.addPass(RequireAnalysisPass<TestImmutableFunctionAnalysis, Function>());
-  CGPM.addPass(
-      LambdaSCCPass([&](LazyCallGraph::SCC &C, CGSCCAnalysisManager &AM,
-                        LazyCallGraph &CG, CGSCCUpdateResult &UR) {
-        SCCCalled = true;
-        return PreservedAnalyses::none();
-      }));
-  CGPM.addPass(createCGSCCToFunctionPassAdaptor(
-      RequireAnalysisPass<TestImmutableFunctionAnalysis, Function>()));
-  ModulePassManager MPM;
-
-  MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
-  MPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(std::move(CGPM)));
-  MPM.run(*M, MAM);
-  ASSERT_EQ(ImmRuns, 1);
-  ASSERT_TRUE(SCCCalled);
-}
-
 #endif
 } // namespace