maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Avoid creating a SlotIndex from the end() iterator. 

No test case, spotted by inspection.

llvm-svn: 176705
This commit is contained in:
Jakob Stoklund Olesen 2013-03-08 18:08:54 +00:00
parent 22210a450d
commit faae9d3ae3
1 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
llvm/include/llvm/CodeGen/SlotIndexes.h
View File

@ -396,12 +396,16 @@ namespace llvm {
return index.isValid() ? index.listEntry()->getInstr() : 0;
}
/// Returns the next non-null index.
SlotIndex getNextNonNullIndex(SlotIndex index) {
IndexList::iterator itr(index.listEntry());
++itr;
while (itr != indexList.end() && itr->getInstr() == 0) { ++itr; }
return SlotIndex(itr, index.getSlot());
/// Returns the next non-null index, if one exists.
/// Otherwise returns getLastIndex().
SlotIndex getNextNonNullIndex(SlotIndex Index) {
IndexList::iterator I = Index.listEntry();
IndexList::iterator E = indexList.end();
while (I != E)
if ((++I)->getInstr())
return SlotIndex(I, Index.getSlot());
// We reached the end of the function.
return getLastIndex();
}
/// getIndexBefore - Returns the index of the last indexed instruction