mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-24 09:29:42 +00:00
cache result of operator*
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107969 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
a29742df5f
commit
0814985887
@ -2128,26 +2128,27 @@ bool GVN::performPRE(Function &F) {
|
||||
|
||||
for (pred_iterator PI = pred_begin(CurrentBlock),
|
||||
PE = pred_end(CurrentBlock); PI != PE; ++PI) {
|
||||
BasicBlock *P = *PI;
|
||||
// We're not interested in PRE where the block is its
|
||||
// own predecessor, or in blocks with predecessors
|
||||
// that are not reachable.
|
||||
if (*PI == CurrentBlock) {
|
||||
if (P == CurrentBlock) {
|
||||
NumWithout = 2;
|
||||
break;
|
||||
} else if (!localAvail.count(*PI)) {
|
||||
} else if (!localAvail.count(P)) {
|
||||
NumWithout = 2;
|
||||
break;
|
||||
}
|
||||
|
||||
DenseMap<uint32_t, Value*>::iterator predV =
|
||||
localAvail[*PI]->table.find(ValNo);
|
||||
if (predV == localAvail[*PI]->table.end()) {
|
||||
PREPred = *PI;
|
||||
localAvail[P]->table.find(ValNo);
|
||||
if (predV == localAvail[P]->table.end()) {
|
||||
PREPred = P;
|
||||
++NumWithout;
|
||||
} else if (predV->second == CurInst) {
|
||||
NumWithout = 2;
|
||||
} else {
|
||||
predMap[*PI] = predV->second;
|
||||
predMap[P] = predV->second;
|
||||
++NumWith;
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user