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Reapply r77654 with a fix: MachineFunctionPass's getAnalysisUsage

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shouldn't do AU.setPreservesCFG(), because even though CodeGen passes
don't modify the LLVM IR CFG, they may modify the MachineFunction CFG,
and passes like MachineLoop are registered with isCFGOnly set to true.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77691 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-07-31 18:16:33 +00:00
parent 56594f9884
commit ad2afc2a42
18 changed files with 189 additions and 136 deletions
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11
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@@ -29,6 +29,7 @@
#include "llvm/CodeGen/GCStrategy.h"
#include "llvm/CodeGen/GCMetadata.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionAnalysis.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
@@ -267,7 +268,7 @@ static void EmitLiveInCopies(MachineBasicBlock *EntryMBB,
//===----------------------------------------------------------------------===//
SelectionDAGISel::SelectionDAGISel(TargetMachine &tm, CodeGenOpt::Level OL) :
FunctionPass(&ID), TM(tm), TLI(*tm.getTargetLowering()),
MachineFunctionPass(&ID), TM(tm), TLI(*tm.getTargetLowering()),
FuncInfo(new FunctionLoweringInfo(TLI)),
CurDAG(new SelectionDAG(TLI, *FuncInfo)),
SDL(new SelectionDAGLowering(*CurDAG, TLI, *FuncInfo, OL)),
@@ -291,9 +292,12 @@ void SelectionDAGISel::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<GCModuleInfo>();
AU.addRequired<DwarfWriter>();
AU.setPreservesAll();
MachineFunctionPass::getAnalysisUsage(AU);
}
bool SelectionDAGISel::runOnFunction(Function &Fn) {
bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
Function &Fn = *mf.getFunction();
// Do some sanity-checking on the command-line options.
assert((!EnableFastISelVerbose || EnableFastISel) &&
"-fast-isel-verbose requires -fast-isel");
@@ -305,12 +309,11 @@ bool SelectionDAGISel::runOnFunction(Function &Fn) {
if (Fn.hasAvailableExternallyLinkage())
return false;
// Get alias analysis for load/store combining.
AA = &getAnalysis<AliasAnalysis>();
TargetMachine &TM = TLI.getTargetMachine();
MF = &MachineFunction::construct(&Fn, TM);
MF = &mf;
const TargetInstrInfo &TII = *TM.getInstrInfo();
const TargetRegisterInfo &TRI = *TM.getRegisterInfo();