diff options
author | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
---|---|---|
committer | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
commit | 6ffe9e53658409f212834330e13564e4952558f6 (patch) | |
tree | 85b1e00183517648b228aafa7c8fb07f5276f419 /contrib/libs/llvm16/lib/Transforms/Scalar/LowerWidenableCondition.cpp | |
parent | 726057070f9c5a91fc10fde0d5024913d10f1ab9 (diff) | |
download | ydb-6ffe9e53658409f212834330e13564e4952558f6.tar.gz |
YQ Connector: support managed ClickHouse
Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.
Diffstat (limited to 'contrib/libs/llvm16/lib/Transforms/Scalar/LowerWidenableCondition.cpp')
-rw-r--r-- | contrib/libs/llvm16/lib/Transforms/Scalar/LowerWidenableCondition.cpp | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/contrib/libs/llvm16/lib/Transforms/Scalar/LowerWidenableCondition.cpp b/contrib/libs/llvm16/lib/Transforms/Scalar/LowerWidenableCondition.cpp new file mode 100644 index 0000000000..e2de322933 --- /dev/null +++ b/contrib/libs/llvm16/lib/Transforms/Scalar/LowerWidenableCondition.cpp @@ -0,0 +1,87 @@ +//===- LowerWidenableCondition.cpp - Lower the guard intrinsic ---------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This pass lowers the llvm.widenable.condition intrinsic to default value +// which is i1 true. +// +//===----------------------------------------------------------------------===// + +#include "llvm/Transforms/Scalar/LowerWidenableCondition.h" +#include "llvm/ADT/SmallVector.h" +#include "llvm/IR/Function.h" +#include "llvm/IR/InstIterator.h" +#include "llvm/IR/Instructions.h" +#include "llvm/IR/Intrinsics.h" +#include "llvm/IR/Module.h" +#include "llvm/IR/PatternMatch.h" +#include "llvm/InitializePasses.h" +#include "llvm/Pass.h" +#include "llvm/Transforms/Scalar.h" + +using namespace llvm; + +namespace { +struct LowerWidenableConditionLegacyPass : public FunctionPass { + static char ID; + LowerWidenableConditionLegacyPass() : FunctionPass(ID) { + initializeLowerWidenableConditionLegacyPassPass( + *PassRegistry::getPassRegistry()); + } + + bool runOnFunction(Function &F) override; +}; +} + +static bool lowerWidenableCondition(Function &F) { + // Check if we can cheaply rule out the possibility of not having any work to + // do. + auto *WCDecl = F.getParent()->getFunction( + Intrinsic::getName(Intrinsic::experimental_widenable_condition)); + if (!WCDecl || WCDecl->use_empty()) + return false; + + using namespace llvm::PatternMatch; + SmallVector<CallInst *, 8> ToLower; + // Traverse through the users of WCDecl. + // This is presumably cheaper than traversing all instructions in the + // function. + for (auto *U : WCDecl->users()) + if (auto *CI = dyn_cast<CallInst>(U)) + if (CI->getFunction() == &F) + ToLower.push_back(CI); + + if (ToLower.empty()) + return false; + + for (auto *CI : ToLower) { + CI->replaceAllUsesWith(ConstantInt::getTrue(CI->getContext())); + CI->eraseFromParent(); + } + return true; +} + +bool LowerWidenableConditionLegacyPass::runOnFunction(Function &F) { + return lowerWidenableCondition(F); +} + +char LowerWidenableConditionLegacyPass::ID = 0; +INITIALIZE_PASS(LowerWidenableConditionLegacyPass, "lower-widenable-condition", + "Lower the widenable condition to default true value", false, + false) + +Pass *llvm::createLowerWidenableConditionPass() { + return new LowerWidenableConditionLegacyPass(); +} + +PreservedAnalyses LowerWidenableConditionPass::run(Function &F, + FunctionAnalysisManager &AM) { + if (lowerWidenableCondition(F)) + return PreservedAnalyses::none(); + + return PreservedAnalyses::all(); +} |