diff options
Diffstat (limited to 'mlir/lib/Transforms/RemoveDeadValues.cpp')
| -rw-r--r-- | mlir/lib/Transforms/RemoveDeadValues.cpp | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/mlir/lib/Transforms/RemoveDeadValues.cpp b/mlir/lib/Transforms/RemoveDeadValues.cpp index 979b396..41f3f9d 100644 --- a/mlir/lib/Transforms/RemoveDeadValues.cpp +++ b/mlir/lib/Transforms/RemoveDeadValues.cpp @@ -742,25 +742,7 @@ static void processBranchOp(BranchOpInterface branchOp, RunLivenessAnalysis &la, static void cleanUpDeadVals(RDVFinalCleanupList &list) { LDBG() << "Starting cleanup of dead values..."; - // 1. Blocks - LDBG() << "Cleaning up " << list.blocks.size() << " block argument lists"; - for (auto &b : list.blocks) { - // blocks that are accessed via multiple codepaths processed once - if (b.b->getNumArguments() != b.nonLiveArgs.size()) - continue; - LDBG() << "Erasing " << b.nonLiveArgs.count() - << " non-live arguments from block: " << b.b; - // it iterates backwards because erase invalidates all successor indexes - for (int i = b.nonLiveArgs.size() - 1; i >= 0; --i) { - if (!b.nonLiveArgs[i]) - continue; - LDBG() << " Erasing block argument " << i << ": " << b.b->getArgument(i); - b.b->getArgument(i).dropAllUses(); - b.b->eraseArgument(i); - } - } - - // 2. Operations + // 1. Operations LDBG() << "Cleaning up " << list.operations.size() << " operations"; for (auto &op : list.operations) { LDBG() << "Erasing operation: " @@ -769,14 +751,14 @@ static void cleanUpDeadVals(RDVFinalCleanupList &list) { op->erase(); } - // 3. Values + // 2. Values LDBG() << "Cleaning up " << list.values.size() << " values"; for (auto &v : list.values) { LDBG() << "Dropping all uses of value: " << v; v.dropAllUses(); } - // 4. Functions + // 3. Functions LDBG() << "Cleaning up " << list.functions.size() << " functions"; // Record which function arguments were erased so we can shrink call-site // argument segments for CallOpInterface operations (e.g. ops using @@ -798,7 +780,7 @@ static void cleanUpDeadVals(RDVFinalCleanupList &list) { (void)f.funcOp.eraseResults(f.nonLiveRets); } - // 5. Operands + // 4. Operands LDBG() << "Cleaning up " << list.operands.size() << " operand lists"; for (OperationToCleanup &o : list.operands) { // Handle call-specific cleanup only when we have a cached callee reference. @@ -840,7 +822,7 @@ static void cleanUpDeadVals(RDVFinalCleanupList &list) { } } - // 6. Results + // 5. Results LDBG() << "Cleaning up " << list.results.size() << " result lists"; for (auto &r : list.results) { LDBG() << "Erasing " << r.nonLive.count() @@ -849,6 +831,24 @@ static void cleanUpDeadVals(RDVFinalCleanupList &list) { dropUsesAndEraseResults(r.op, r.nonLive); } + // 6. Blocks + LDBG() << "Cleaning up " << list.blocks.size() << " block argument lists"; + for (auto &b : list.blocks) { + // blocks that are accessed via multiple codepaths processed once + if (b.b->getNumArguments() != b.nonLiveArgs.size()) + continue; + LDBG() << "Erasing " << b.nonLiveArgs.count() + << " non-live arguments from block: " << b.b; + // it iterates backwards because erase invalidates all successor indexes + for (int i = b.nonLiveArgs.size() - 1; i >= 0; --i) { + if (!b.nonLiveArgs[i]) + continue; + LDBG() << " Erasing block argument " << i << ": " << b.b->getArgument(i); + b.b->getArgument(i).dropAllUses(); + b.b->eraseArgument(i); + } + } + // 7. Successor Operands LDBG() << "Cleaning up " << list.successorOperands.size() << " successor operand lists"; |
