mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-25 21:45:21 +00:00
8a261e44f7
to declare that they preserve other passes without needing to pull in additional header file or library dependencies. Convert MachineFunctionPass and CodeGenLICM to make use of this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83555 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
//===-- MachineFunctionPass.cpp -------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the definitions of the MachineFunctionPass members.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Function.h"
|
|
#include "llvm/Analysis/AliasAnalysis.h"
|
|
#include "llvm/CodeGen/MachineFunctionAnalysis.h"
|
|
#include "llvm/CodeGen/MachineFunctionPass.h"
|
|
using namespace llvm;
|
|
|
|
bool MachineFunctionPass::runOnFunction(Function &F) {
|
|
// Do not codegen any 'available_externally' functions at all, they have
|
|
// definitions outside the translation unit.
|
|
if (F.hasAvailableExternallyLinkage())
|
|
return false;
|
|
|
|
MachineFunction &MF = getAnalysis<MachineFunctionAnalysis>().getMF();
|
|
return runOnMachineFunction(MF);
|
|
}
|
|
|
|
void MachineFunctionPass::getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.addRequired<MachineFunctionAnalysis>();
|
|
AU.addPreserved<MachineFunctionAnalysis>();
|
|
|
|
// MachineFunctionPass preserves all LLVM IR passes, but there's no
|
|
// high-level way to express this. Instead, just list a bunch of
|
|
// passes explicitly. This does not include setPreservesCFG,
|
|
// because CodeGen overloads that to mean preserving the MachineBasicBlock
|
|
// CFG in addition to the LLVM IR CFG.
|
|
AU.addPreserved<AliasAnalysis>();
|
|
AU.addPreserved("scalar-evolution");
|
|
AU.addPreserved("iv-users");
|
|
AU.addPreserved("memdep");
|
|
AU.addPreserved("live-values");
|
|
AU.addPreserved("domtree");
|
|
AU.addPreserved("domfrontier");
|
|
AU.addPreserved("loops");
|
|
AU.addPreserved("lda");
|
|
|
|
FunctionPass::getAnalysisUsage(AU);
|
|
}
|