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Handle tcp.bind_symbolic_shape ops in fusion algorithm #82

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merged 4 commits into from
Jul 15, 2024
Merged

Handle tcp.bind_symbolic_shape ops in fusion algorithm #82

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f89227f
Handle `tcp.bind_symbolic_shape` ops in fusion algorithm
Jul 15, 2024
9c680d8
add lit test
Jul 15, 2024
5de76fe
typo
Jul 15, 2024
b060976
one more lit test
Jul 15, 2024
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17 changes: 17 additions & 0 deletions lib/Dialect/Transforms/FusionPatterns.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -44,8 +44,15 @@ GenericBottomUpFuser::matchAndRewrite(Operation *op,
Region *usesParentRegion = nullptr;
SmallVector<Operation *> uses;
llvm::DenseSet<Operation *> usesSet;
llvm::DenseSet<tcp::BindSymbolicShapeOp> bindShapeUses;

LLVM_DEBUG(llvm::dbgs() << "Processing op: " << *op << "\n");
for (auto &use : op->getUses()) {
if (auto bindShapeOp = dyn_cast<tcp::BindSymbolicShapeOp>(use.getOwner())) {
bindShapeUses.insert(bindShapeOp);
continue;
}

auto parentRegion = use.getOwner()->getParentRegion();
if (usesParentRegion && usesParentRegion != parentRegion)
return failure();
Expand All @@ -58,6 +65,10 @@ GenericBottomUpFuser::matchAndRewrite(Operation *op,
uses.push_back(use.getOwner());
}

// All its uses are tcp.bind_symbolic_shpae ops.
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nit: typo

if (uses.empty())
return failure();

// Sorting by dominance ensures that the first element of this vector is
// the first use of the def. Used below when we want to move the op into
// an existing group.
Expand Down Expand Up @@ -104,6 +115,9 @@ GenericBottomUpFuser::matchAndRewrite(Operation *op,
use->moveBefore(yieldOp);
}
op->moveBefore(*uses.begin());
for (auto bindShapeOp : bindShapeUses) {
bindShapeOp->moveBefore(yieldOp);
}
}

// We then replace all uses of the uses which lie outside the group
Expand Down Expand Up @@ -157,6 +171,9 @@ GenericBottomUpFuser::matchAndRewrite(Operation *op,
// reordered.
auto &firstOp = *usesParentRegion->getOps().begin();
op->moveBefore(&firstOp);
for (auto bindShapeOp : bindShapeUses) {
bindShapeOp->moveBefore(&firstOp);
}
} else {
op->emitError("Unhandled case during fusion");
llvm_unreachable("Unhandled case during fusion");
Expand Down
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