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Changed the definition of an "invalid" slot to include the empty & tombstone values, but not zero. 

llvm-svn: 95631
This commit is contained in:
Lang Hames 2010-02-09 00:41:23 +00:00
parent 928480ec18
commit 4695741312
1 changed files with 10 additions and 10 deletions
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20
llvm/include/llvm/CodeGen/SlotIndexes.h
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@ -72,10 +72,13 @@ namespace llvm {
}
}
bool isValid() const {
return (index != EMPTY_KEY_INDEX && index != TOMBSTONE_KEY_INDEX);
}
MachineInstr* getInstr() const { return mi; }
void setInstr(MachineInstr *mi) {
assert(index != EMPTY_KEY_INDEX && index != TOMBSTONE_KEY_INDEX &&
"Attempt to modify reserved index.");
assert(isValid() && "Attempt to modify reserved index.");
this->mi = mi;
}
@ -83,25 +86,21 @@ namespace llvm {
void setIndex(unsigned index) {
assert(index != EMPTY_KEY_INDEX && index != TOMBSTONE_KEY_INDEX &&
"Attempt to set index to invalid value.");
assert(this->index != EMPTY_KEY_INDEX &&
this->index != TOMBSTONE_KEY_INDEX &&
"Attempt to reset reserved index value.");
assert(isValid() && "Attempt to reset reserved index value.");
this->index = index;
}
IndexListEntry* getNext() { return next; }
const IndexListEntry* getNext() const { return next; }
void setNext(IndexListEntry *next) {
assert(index != EMPTY_KEY_INDEX && index != TOMBSTONE_KEY_INDEX &&
"Attempt to modify reserved index.");
assert(isValid() && "Attempt to modify reserved index.");
this->next = next;
}
IndexListEntry* getPrev() { return prev; }
const IndexListEntry* getPrev() const { return prev; }
void setPrev(IndexListEntry *prev) {
assert(index != EMPTY_KEY_INDEX && index != TOMBSTONE_KEY_INDEX &&
"Attempt to modify reserved index.");
assert(isValid() && "Attempt to modify reserved index.");
this->prev = prev;
}
@ -192,7 +191,8 @@ namespace llvm {
/// Returns true if this is a valid index. Invalid indicies do
/// not point into an index table, and cannot be compared.
bool isValid() const {
return (lie.getPointer() != 0) && (lie.getPointer()->getIndex() != 0);
IndexListEntry *entry = lie.getPointer();
return ((entry!= 0) && (entry->isValid()));
}
/// Print this index to the given raw_ostream.