[SimplifyCFG] Respect optforfuzzing in NPM pass

Regression caused by refactoring in
cdd006e.

See discussion in https://reviews.llvm.org/D89917.

Reviewed By: arsenm, morehouse

Differential Revision: https://reviews.llvm.org/D91473

Author: aeubanks

llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp

@@ -245,6 +245,11 @@ PreservedAnalyses SimplifyCFGPass::run(Function &F,
                                        FunctionAnalysisManager &AM) {
   auto &TTI = AM.getResult<TargetIRAnalysis>(F);
   Options.AC = &AM.getResult<AssumptionAnalysis>(F);
+  if (F.hasFnAttribute(Attribute::OptForFuzzing)) {
+    Options.setSimplifyCondBranch(false).setFoldTwoEntryPHINode(false);
+  } else {
+    Options.setSimplifyCondBranch(true).setFoldTwoEntryPHINode(true);
+  }
   if (!simplifyFunctionCFG(F, TTI, Options))
     return PreservedAnalyses::all();
   PreservedAnalyses PA;

llvm/test/Transforms/SimplifyCFG/opt-for-fuzzing.ll

@@ -1,4 +1,5 @@
 ; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -passes=simplifycfg -S | FileCheck %s
 
 define i32 @foo(i32 %x) optforfuzzing {
 entry: