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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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73
lib/CodeGen/MachineFunction.cpp
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@ -36,15 +36,6 @@
#include <sstream>
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;
return runOnMachineFunction(MachineFunction::get(&F));
}
namespace {
struct VISIBILITY_HIDDEN Printer : public MachineFunctionPass {
static char ID;
@ -59,6 +50,7 @@ namespace {
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
MachineFunctionPass::getAnalysisUsage(AU);
}
bool runOnMachineFunction(MachineFunction &MF) {
@ -78,31 +70,6 @@ FunctionPass *llvm::createMachineFunctionPrinterPass(std::ostream *OS,
return new Printer(OS, Banner);
}
namespace {
struct VISIBILITY_HIDDEN Deleter : public MachineFunctionPass {
static char ID;
Deleter() : MachineFunctionPass(&ID) {}
const char *getPassName() const { return "Machine Code Deleter"; }
bool runOnMachineFunction(MachineFunction &MF) {
// Delete the annotation from the function now.
MachineFunction::destruct(MF.getFunction());
return true;
}
};
char Deleter::ID = 0;
}
/// MachineCodeDeletion Pass - This pass deletes all of the machine code for
/// the current function, which should happen after the function has been
/// emitted to a .s file or to memory.
FunctionPass *llvm::createMachineCodeDeleter() {
return new Deleter();
}
//===---------------------------------------------------------------------===//
// MachineFunction implementation
//===---------------------------------------------------------------------===//
@ -111,7 +78,7 @@ void ilist_traits<MachineBasicBlock>::deleteNode(MachineBasicBlock *MBB) {
MBB->getParent()->DeleteMachineBasicBlock(MBB);
}
MachineFunction::MachineFunction(const Function *F,
MachineFunction::MachineFunction(Function *F,
const TargetMachine &TM)
: Annotation(AnnotationManager::getID("CodeGen::MachineCodeForFunction")),
Fn(F), Target(TM) {
@ -356,42 +323,6 @@ void MachineFunction::viewCFGOnly() const
#endif // NDEBUG
}
// The next two methods are used to construct and to retrieve
// the MachineCodeForFunction object for the given function.
// construct() -- Allocates and initializes for a given function and target
// get() -- Returns a handle to the object.
// This should not be called before "construct()"
// for a given Function.
//
MachineFunction&
MachineFunction::construct(const Function *Fn, const TargetMachine &Tar)
{
AnnotationID MF_AID =
AnnotationManager::getID("CodeGen::MachineCodeForFunction");
assert(Fn->getAnnotation(MF_AID) == 0 &&
"Object already exists for this function!");
MachineFunction* mcInfo = new MachineFunction(Fn, Tar);
Fn->addAnnotation(mcInfo);
return *mcInfo;
}
void MachineFunction::destruct(const Function *Fn) {
AnnotationID MF_AID =
AnnotationManager::getID("CodeGen::MachineCodeForFunction");
bool Deleted = Fn->deleteAnnotation(MF_AID);
assert(Deleted && "Machine code did not exist for function!");
Deleted = Deleted; // silence warning when no assertions.
}
MachineFunction& MachineFunction::get(const Function *F)
{
AnnotationID MF_AID =
AnnotationManager::getID("CodeGen::MachineCodeForFunction");
MachineFunction *mc = (MachineFunction*)F->getAnnotation(MF_AID);
assert(mc && "Call construct() method first to allocate the object");
return *mc;
}
/// addLiveIn - Add the specified physical register as a live-in value and
/// create a corresponding virtual register for it.
unsigned MachineFunction::addLiveIn(unsigned PReg,