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Enable COWArrayOpts on OSSA #35312

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Merged
merged 1 commit into from
Jan 9, 2021
Merged

Enable COWArrayOpts on OSSA #35312

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1 change: 1 addition & 0 deletions include/swift/SIL/SILInstruction.h
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Original file line number Diff line number Diff line change
Expand Up @@ -541,6 +541,7 @@ class SILInstruction
SILValue getOperand(unsigned Num) const {
return getAllOperands()[Num].get();
}
Operand &getOperandRef(unsigned Num) { return getAllOperands()[Num]; }
void setOperand(unsigned Num, SILValue V) { getAllOperands()[Num].set(V); }
void swapOperands(unsigned Num1, unsigned Num2) {
getAllOperands()[Num1].swap(getAllOperands()[Num2]);
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4 changes: 4 additions & 0 deletions lib/SILOptimizer/LoopTransforms/ArrayOpt.h
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Expand Up @@ -125,6 +125,9 @@ class StructUseCollector {
if (!ElementAddressUsers.empty())
return false;
for (SILInstruction *user : StructAddressUsers) {
// ignore load users
if (isa<LoadInst>(user))
continue;
if (user != use1 && user != use2)
return false;
}
Expand Down Expand Up @@ -184,6 +187,7 @@ class StructUseCollector {
// Found a use of the struct at the given access path.
if (auto *LoadI = dyn_cast<LoadInst>(UseInst)) {
StructLoads.push_back(LoadI);
StructAddressUsers.push_back(LoadI);
continue;
}

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