1 //===--- SelectOptimize.cpp - Convert select to branches if profitable ---===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This pass converts selects to conditional jumps when profitable.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/CodeGen/Passes.h"
14 #include "llvm/IR/Function.h"
15 #include "llvm/InitializePasses.h"
16 #include "llvm/Pass.h"
17 
18 using namespace llvm;
19 
20 namespace {
21 
22 class SelectOptimize : public FunctionPass {
23 public:
24   static char ID;
25   SelectOptimize() : FunctionPass(ID) {
26     initializeSelectOptimizePass(*PassRegistry::getPassRegistry());
27   }
28 
29   bool runOnFunction(Function &F) override;
30 
31   void getAnalysisUsage(AnalysisUsage &AU) const override {}
32 };
33 } // namespace
34 
35 char SelectOptimize::ID = 0;
36 INITIALIZE_PASS(SelectOptimize, "select-optimize", "Optimize selects", false,
37                 false)
38 
39 FunctionPass *llvm::createSelectOptimizePass() { return new SelectOptimize(); }
40 
41 bool SelectOptimize::runOnFunction(Function &F) {
42   llvm_unreachable("Unimplemented");
43 }
44