blob: e5a491270a8ca5fc93f54aad7f7f199404502bfc [file] [log] [blame]
Shih-wei Liaoe264f622010-02-10 11:10:31 -08001//===-- MachineFunctionPass.cpp -------------------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains the definitions of the MachineFunctionPass members.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Function.h"
15#include "llvm/Analysis/AliasAnalysis.h"
16#include "llvm/CodeGen/MachineFunctionAnalysis.h"
17#include "llvm/CodeGen/MachineFunctionPass.h"
Shih-wei Liao7abe37e2010-04-28 01:47:00 -070018#include "llvm/CodeGen/Passes.h"
Shih-wei Liaoe264f622010-02-10 11:10:31 -080019using namespace llvm;
20
Shih-wei Liao7abe37e2010-04-28 01:47:00 -070021Pass *MachineFunctionPass::createPrinterPass(raw_ostream &O,
22 const std::string &Banner) const {
23 return createMachineFunctionPrinterPass(O, Banner);
24}
25
Shih-wei Liaoe264f622010-02-10 11:10:31 -080026bool MachineFunctionPass::runOnFunction(Function &F) {
27 // Do not codegen any 'available_externally' functions at all, they have
28 // definitions outside the translation unit.
29 if (F.hasAvailableExternallyLinkage())
30 return false;
31
32 MachineFunction &MF = getAnalysis<MachineFunctionAnalysis>().getMF();
33 return runOnMachineFunction(MF);
34}
35
36void MachineFunctionPass::getAnalysisUsage(AnalysisUsage &AU) const {
37 AU.addRequired<MachineFunctionAnalysis>();
38 AU.addPreserved<MachineFunctionAnalysis>();
39
40 // MachineFunctionPass preserves all LLVM IR passes, but there's no
41 // high-level way to express this. Instead, just list a bunch of
42 // passes explicitly. This does not include setPreservesCFG,
43 // because CodeGen overloads that to mean preserving the MachineBasicBlock
44 // CFG in addition to the LLVM IR CFG.
45 AU.addPreserved<AliasAnalysis>();
46 AU.addPreserved("scalar-evolution");
47 AU.addPreserved("iv-users");
48 AU.addPreserved("memdep");
49 AU.addPreserved("live-values");
50 AU.addPreserved("domtree");
51 AU.addPreserved("domfrontier");
52 AU.addPreserved("loops");
53 AU.addPreserved("lda");
54
55 FunctionPass::getAnalysisUsage(AU);
56}