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CodeGenerator::NullCheckCodegen Struct Reference

#include <CodeGenerator.h>

+ Collaboration diagram for CodeGenerator::NullCheckCodegen:

Public Member Functions

 NullCheckCodegen (CgenState *cgen_state, Executor *executor, llvm::Value *nullable_lv, const SQLTypeInfo &nullable_ti, const std::string &name="")
 
llvm::Value * finalize (llvm::Value *null_lv, llvm::Value *notnull_lv)
 

Public Attributes

CgenStatecgen_state {nullptr}
 
std::string name
 
llvm::BasicBlock * nullcheck_bb {nullptr}
 
llvm::PHINode * nullcheck_value {nullptr}
 
std::unique_ptr< DiamondCodegennull_check
 

Detailed Description

Definition at line 117 of file CodeGenerator.h.

Constructor & Destructor Documentation

CodeGenerator::NullCheckCodegen::NullCheckCodegen ( CgenState cgen_state,
Executor executor,
llvm::Value *  nullable_lv,
const SQLTypeInfo nullable_ti,
const std::string &  name = "" 
)

Definition at line 1418 of file IRCodegen.cpp.

References AUTOMATIC_IR_METADATA, CHECK, CgenState::context_, CgenState::current_func_, CodeGenerator::executor(), CgenState::inlineFpNull(), CgenState::inlineIntNull(), CgenState::ir_builder_, SQLTypeInfo::is_boolean(), SQLTypeInfo::is_fp(), SQLTypeInfo::is_number(), SQLTypeInfo::is_time(), CgenState::llBool(), name, null_check, and nullcheck_bb.

1423  : cgen_state(cgen_state), name(name) {
1424  AUTOMATIC_IR_METADATA(cgen_state);
1425  CHECK(nullable_ti.is_number() || nullable_ti.is_time() || nullable_ti.is_boolean());
1426 
1427  llvm::Value* is_null_lv{nullptr};
1428  if (nullable_ti.is_fp()) {
1429  is_null_lv = cgen_state->ir_builder_.CreateFCmp(
1430  llvm::FCmpInst::FCMP_OEQ, nullable_lv, cgen_state->inlineFpNull(nullable_ti));
1431  } else if (nullable_ti.is_boolean()) {
1432  is_null_lv = cgen_state->ir_builder_.CreateICmp(
1433  llvm::ICmpInst::ICMP_EQ, nullable_lv, cgen_state->llBool(true));
1434  } else {
1435  is_null_lv = cgen_state->ir_builder_.CreateICmp(
1436  llvm::ICmpInst::ICMP_EQ, nullable_lv, cgen_state->inlineIntNull(nullable_ti));
1437  }
1438  CHECK(is_null_lv);
1439  null_check =
1440  std::make_unique<DiamondCodegen>(is_null_lv, executor, false, name, nullptr, false);
1441 
1442  // generate a phi node depending on whether we got a null or not
1443  nullcheck_bb = llvm::BasicBlock::Create(
1444  cgen_state->context_, name + "_bb", cgen_state->current_func_);
1445 
1446  // update the blocks created by diamond codegen to point to the newly created phi
1447  // block
1448  cgen_state->ir_builder_.SetInsertPoint(null_check->cond_true_);
1449  cgen_state->ir_builder_.CreateBr(nullcheck_bb);
1450  cgen_state->ir_builder_.SetInsertPoint(null_check->cond_false_);
1451 }
llvm::BasicBlock * nullcheck_bb
bool is_fp() const
Definition: sqltypes.h:508
llvm::IRBuilder ir_builder_
Definition: CgenState.h:340
llvm::ConstantInt * llBool(const bool v) const
Definition: CgenState.h:321
bool is_number() const
Definition: sqltypes.h:509
bool is_time() const
Definition: sqltypes.h:510
llvm::LLVMContext & context_
Definition: CgenState.h:338
llvm::Function * current_func_
Definition: CgenState.h:332
llvm::ConstantInt * inlineIntNull(const SQLTypeInfo &)
Definition: CgenState.cpp:29
bool is_boolean() const
Definition: sqltypes.h:511
#define AUTOMATIC_IR_METADATA(CGENSTATE)
#define CHECK(condition)
Definition: Logger.h:209
std::unique_ptr< DiamondCodegen > null_check
llvm::ConstantFP * inlineFpNull(const SQLTypeInfo &)
Definition: CgenState.cpp:67
Executor * executor() const

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Member Function Documentation

llvm::Value * CodeGenerator::NullCheckCodegen::finalize ( llvm::Value *  null_lv,
llvm::Value *  notnull_lv 
)

Definition at line 1453 of file IRCodegen.cpp.

References AUTOMATIC_IR_METADATA, CHECK, CHECK_EQ, and setup::name.

1454  {
1456  CHECK(null_check);
1457  cgen_state->ir_builder_.CreateBr(nullcheck_bb);
1458 
1459  CHECK_EQ(null_lv->getType(), notnull_lv->getType());
1460 
1461  cgen_state->ir_builder_.SetInsertPoint(nullcheck_bb);
1462  nullcheck_value =
1463  cgen_state->ir_builder_.CreatePHI(null_lv->getType(), 2, name + "_value");
1464  nullcheck_value->addIncoming(notnull_lv, null_check->cond_false_);
1465  nullcheck_value->addIncoming(null_lv, null_check->cond_true_);
1466 
1467  null_check.reset(nullptr);
1468  cgen_state->ir_builder_.SetInsertPoint(nullcheck_bb);
1469  return nullcheck_value;
1470 }
#define CHECK_EQ(x, y)
Definition: Logger.h:217
llvm::BasicBlock * nullcheck_bb
llvm::IRBuilder ir_builder_
Definition: CgenState.h:340
#define AUTOMATIC_IR_METADATA(CGENSTATE)
#define CHECK(condition)
Definition: Logger.h:209
std::unique_ptr< DiamondCodegen > null_check

Member Data Documentation

CgenState* CodeGenerator::NullCheckCodegen::cgen_state {nullptr}

Definition at line 126 of file CodeGenerator.h.

std::unique_ptr<DiamondCodegen> CodeGenerator::NullCheckCodegen::null_check

Definition at line 130 of file CodeGenerator.h.

Referenced by NullCheckCodegen().

llvm::BasicBlock* CodeGenerator::NullCheckCodegen::nullcheck_bb {nullptr}

Definition at line 128 of file CodeGenerator.h.

Referenced by NullCheckCodegen().

llvm::PHINode* CodeGenerator::NullCheckCodegen::nullcheck_value {nullptr}

Definition at line 129 of file CodeGenerator.h.


The documentation for this struct was generated from the following files: