Imported Upstream version 5.18.0.182

Former-commit-id: f9d55cf82631bfd710c387739687e5845296aea1

external/llvm/lib/Transforms/IPO/InferFunctionAttrs.cpp

@@ -1,79 +0,0 @@
-//===- InferFunctionAttrs.cpp - Infer implicit function attributes --------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/IPO/InferFunctionAttrs.h"
-#include "llvm/Analysis/TargetLibraryInfo.h"
-#include "llvm/IR/Function.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Transforms/Utils/BuildLibCalls.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "inferattrs"
-
-static bool inferAllPrototypeAttributes(Module &M,
-                                        const TargetLibraryInfo &TLI) {
-  bool Changed = false;
-
-  for (Function &F : M.functions())
-    // We only infer things using the prototype and the name; we don't need
-    // definitions.
-    if (F.isDeclaration() && !F.hasFnAttribute((Attribute::OptimizeNone)))
-      Changed |= inferLibFuncAttributes(F, TLI);
-
-  return Changed;
-}
-
-PreservedAnalyses InferFunctionAttrsPass::run(Module &M,
-                                              ModuleAnalysisManager &AM) {
-  auto &TLI = AM.getResult<TargetLibraryAnalysis>(M);
-
-  if (!inferAllPrototypeAttributes(M, TLI))
-    // If we didn't infer anything, preserve all analyses.
-    return PreservedAnalyses::all();
-
-  // Otherwise, we may have changed fundamental function attributes, so clear
-  // out all the passes.
-  return PreservedAnalyses::none();
-}
-
-namespace {
-struct InferFunctionAttrsLegacyPass : public ModulePass {
-  static char ID; // Pass identification, replacement for typeid
-  InferFunctionAttrsLegacyPass() : ModulePass(ID) {
-    initializeInferFunctionAttrsLegacyPassPass(
-        *PassRegistry::getPassRegistry());
-  }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<TargetLibraryInfoWrapperPass>();
-  }
-
-  bool runOnModule(Module &M) override {
-    if (skipModule(M))
-      return false;
-
-    auto &TLI = getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
-    return inferAllPrototypeAttributes(M, TLI);
-  }
-};
-}
-
-char InferFunctionAttrsLegacyPass::ID = 0;
-INITIALIZE_PASS_BEGIN(InferFunctionAttrsLegacyPass, "inferattrs",
-                      "Infer set function attributes", false, false)
-INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_PASS_END(InferFunctionAttrsLegacyPass, "inferattrs",
-                    "Infer set function attributes", false, false)
-
-Pass *llvm::createInferFunctionAttrsLegacyPass() {
-  return new InferFunctionAttrsLegacyPass();
-}