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Added a support for inserting new MBBs into the numbering.

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Unlike insertMachineInstrInMaps this does not guarantee live intervals will
remain correct. The caller will need to manually update intervals to account
for the changes made to the CFG.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107958 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames 2010-07-09 09:19:23 +00:00
parent 8154f96f44
commit dfbc29a5a2
1 changed files with 42 additions and 0 deletions
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42
include/llvm/CodeGen/SlotIndexes.h
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@ -23,6 +23,7 @@
#define LLVM_CODEGEN_SLOTINDEXES_H
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/SmallVector.h"
@ -762,6 +763,47 @@ namespace llvm {
mi2iMap.insert(std::make_pair(newMI, replaceBaseIndex));
}
/// Add the given MachineBasicBlock into the maps.
void insertMBBInMaps(MachineBasicBlock *mbb) {
MachineFunction::iterator nextMBB =
llvm::next(MachineFunction::iterator(mbb));
IndexListEntry *startEntry = createEntry(0, 0);
IndexListEntry *terminatorEntry = createEntry(0, 0);
IndexListEntry *nextEntry = 0;
if (nextMBB == mbb->getParent()->end()) {
nextEntry = getTail();
} else {
nextEntry = &getMBBStartIdx(nextMBB).entry();
}
insert(nextEntry, startEntry);
insert(nextEntry, terminatorEntry);
SlotIndex startIdx(startEntry, SlotIndex::LOAD);
SlotIndex terminatorIdx(terminatorEntry, SlotIndex::PHI_BIT);
SlotIndex endIdx(nextEntry, SlotIndex::LOAD);
terminatorGaps.insert(
std::make_pair(mbb, terminatorIdx));
mbb2IdxMap.insert(
std::make_pair(mbb, std::make_pair(startIdx, endIdx)));
idx2MBBMap.push_back(IdxMBBPair(startIdx, mbb));
if (MachineFunction::iterator(mbb) != mbb->getParent()->begin()) {
// Have to update the end index of the previous block.
MachineBasicBlock *priorMBB =
llvm::prior(MachineFunction::iterator(mbb));
mbb2IdxMap[priorMBB].second = startIdx;
}
renumberIndexes();
std::sort(idx2MBBMap.begin(), idx2MBBMap.end(), Idx2MBBCompare());
}
};