| 1 | //===- TestSidEffects.cpp - Pass to test side effects ---------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "TestOps.h" |
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| 10 | #include "mlir/Pass/Pass.h" |
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| 11 | |
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| 12 | using namespace mlir; |
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| 13 | |
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| 14 | namespace { |
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| 15 | struct SideEffectsPass |
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| 16 | : public PassWrapper<SideEffectsPass, OperationPass<ModuleOp>> { |
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| 17 | MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(SideEffectsPass) |
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| 18 | |
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| 19 | StringRef getArgument() const final { return "test-side-effects" ; } |
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| 20 | StringRef getDescription() const final { |
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| 21 | return "Test side effects interfaces" ; |
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| 22 | } |
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| 23 | void runOnOperation() override { |
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| 24 | auto module = getOperation(); |
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| 25 | |
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| 26 | // Walk operations detecting side effects. |
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| 27 | SmallVector<MemoryEffects::EffectInstance, 8> effects; |
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| 28 | module.walk([&](MemoryEffectOpInterface op) { |
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| 29 | effects.clear(); |
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| 30 | op.getEffects(effects); |
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| 31 | |
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| 32 | if (op->hasTrait<OpTrait::IsTerminator>()) { |
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| 33 | return; |
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| 34 | } |
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| 35 | |
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| 36 | // Check to see if this operation has any memory effects. |
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| 37 | if (effects.empty()) { |
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| 38 | op.emitRemark() << "operation has no memory effects" ; |
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| 39 | return; |
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| 40 | } |
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| 41 | |
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| 42 | for (MemoryEffects::EffectInstance instance : effects) { |
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| 43 | auto diag = op.emitRemark() << "found an instance of " ; |
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| 44 | |
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| 45 | if (isa<MemoryEffects::Allocate>(Val: instance.getEffect())) |
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| 46 | diag << "'allocate'" ; |
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| 47 | else if (isa<MemoryEffects::Free>(Val: instance.getEffect())) |
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| 48 | diag << "'free'" ; |
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| 49 | else if (isa<MemoryEffects::Read>(Val: instance.getEffect())) |
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| 50 | diag << "'read'" ; |
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| 51 | else if (isa<MemoryEffects::Write>(Val: instance.getEffect())) |
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| 52 | diag << "'write'" ; |
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| 53 | |
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| 54 | if (instance.getValue()) { |
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| 55 | if (auto *opOpd = instance.getEffectValue<OpOperand *>()) |
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| 56 | diag << " on op operand " << opOpd->getOperandNumber() << "," ; |
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| 57 | else if (auto opRes = instance.getEffectValue<OpResult>()) |
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| 58 | diag << " on op result " << opRes.getResultNumber() << "," ; |
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| 59 | else if (auto opBlk = instance.getEffectValue<BlockArgument>()) |
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| 60 | diag << " on block argument " << opBlk.getArgNumber() << "," ; |
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| 61 | } else if (SymbolRefAttr symbolRef = instance.getSymbolRef()) |
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| 62 | diag << " on a symbol '" << symbolRef << "'," ; |
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| 63 | |
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| 64 | diag << " on resource '" << instance.getResource()->getName() << "'" ; |
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| 65 | } |
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| 66 | }); |
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| 67 | |
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| 68 | SmallVector<TestEffects::EffectInstance, 1> testEffects; |
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| 69 | module.walk([&](TestEffectOpInterface op) { |
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| 70 | testEffects.clear(); |
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| 71 | op.getEffects(testEffects); |
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| 72 | |
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| 73 | if (testEffects.empty()) |
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| 74 | return; |
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| 75 | |
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| 76 | for (const TestEffects::EffectInstance &instance : testEffects) { |
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| 77 | op.emitRemark() << "found a parametric effect with " |
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| 78 | << instance.getParameters(); |
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| 79 | } |
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| 80 | }); |
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| 81 | } |
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| 82 | }; |
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| 83 | } // namespace |
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| 84 | |
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| 85 | namespace mlir { |
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| 86 | void registerSideEffectTestPasses() { PassRegistration<SideEffectsPass>(); } |
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| 87 | } // namespace mlir |
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| 88 | |
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