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[mlir][Transforms] GreedyPatternRewriteDriver: log successful folding #77796

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merged 1 commit into from
Jan 12, 2024
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[mlir][Transforms] GreedyPatternRewriteDriver: log successful folding #77796

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20 changes: 20 additions & 0 deletions mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -136,6 +136,21 @@ struct DebugFingerPrints : public RewriterBase::ForwardingListener {
};
#endif // MLIR_ENABLE_EXPENSIVE_PATTERN_API_CHECKS

#ifndef NDEBUG
static Operation *getDumpRootOp(Operation *op) {
// Dump the parent op so that materialized constants are visible. If the op
// is a top-level op, dump it directly.
if (Operation *parentOp = op->getParentOp())
return parentOp;
return op;
}
static void logSuccessfulFolding(Operation *op) {
llvm::dbgs() << "// *** IR Dump After Successful Folding ***\n";
op->dump();
llvm::dbgs() << "\n\n";
}
#endif // NDEBUG

//===----------------------------------------------------------------------===//
// Worklist
//===----------------------------------------------------------------------===//
Expand Down Expand Up @@ -434,10 +449,14 @@ bool GreedyPatternRewriteDriver::processWorklist() {
SmallVector<OpFoldResult> foldResults;
if (succeeded(op->fold(foldResults))) {
LLVM_DEBUG(logResultWithLine("success", "operation was folded"));
#ifndef NDEBUG
Operation *dumpRootOp = getDumpRootOp(op);
#endif // NDEBUG
if (foldResults.empty()) {
// Op was modified in-place.
notifyOperationModified(op);
changed = true;
LLVM_DEBUG(logSuccessfulFolding(dumpRootOp));
#if MLIR_ENABLE_EXPENSIVE_PATTERN_API_CHECKS
if (config.scope && failed(verify(config.scope->getParentOp())))
llvm::report_fatal_error("IR failed to verify after folding");
Expand Down Expand Up @@ -492,6 +511,7 @@ bool GreedyPatternRewriteDriver::processWorklist() {
if (materializationSucceeded) {
replaceOp(op, replacements);
changed = true;
LLVM_DEBUG(logSuccessfulFolding(dumpRootOp));
#if MLIR_ENABLE_EXPENSIVE_PATTERN_API_CHECKS
if (config.scope && failed(verify(config.scope->getParentOp())))
llvm::report_fatal_error("IR failed to verify after folding");
Expand Down