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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 132 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 1401 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_dict_encoded_string(), SQLTypeInfo::is_fp(), SQLTypeInfo::is_number(), SQLTypeInfo::is_time(), CgenState::llBool(), name, null_check, and nullcheck_bb.

1406  : cgen_state(cgen_state), name(name) {
1407  AUTOMATIC_IR_METADATA(cgen_state);
1408  CHECK(nullable_ti.is_number() || nullable_ti.is_time() || nullable_ti.is_boolean() ||
1409  nullable_ti.is_dict_encoded_string());
1410 
1411  llvm::Value* is_null_lv{nullptr};
1412  if (nullable_ti.is_fp()) {
1413  is_null_lv = cgen_state->ir_builder_.CreateFCmp(
1414  llvm::FCmpInst::FCMP_OEQ, nullable_lv, cgen_state->inlineFpNull(nullable_ti));
1415  } else if (nullable_ti.is_boolean()) {
1416  is_null_lv = cgen_state->ir_builder_.CreateICmp(
1417  llvm::ICmpInst::ICMP_EQ, nullable_lv, cgen_state->llBool(true));
1418  } else {
1419  is_null_lv = cgen_state->ir_builder_.CreateICmp(
1420  llvm::ICmpInst::ICMP_EQ, nullable_lv, cgen_state->inlineIntNull(nullable_ti));
1421  }
1422  CHECK(is_null_lv);
1423  null_check =
1424  std::make_unique<DiamondCodegen>(is_null_lv, executor, false, name, nullptr, false);
1425 
1426  // generate a phi node depending on whether we got a null or not
1427  nullcheck_bb = llvm::BasicBlock::Create(
1428  cgen_state->context_, name + "_bb", cgen_state->current_func_);
1429 
1430  // update the blocks created by diamond codegen to point to the newly created phi
1431  // block
1432  cgen_state->ir_builder_.SetInsertPoint(null_check->cond_true_);
1433  cgen_state->ir_builder_.CreateBr(nullcheck_bb);
1434  cgen_state->ir_builder_.SetInsertPoint(null_check->cond_false_);
1435 }
llvm::BasicBlock * nullcheck_bb
bool is_fp() const
Definition: sqltypes.h:514
llvm::IRBuilder ir_builder_
Definition: CgenState.h:361
llvm::ConstantInt * llBool(const bool v) const
Definition: CgenState.h:310
bool is_number() const
Definition: sqltypes.h:515
bool is_time() const
Definition: sqltypes.h:516
llvm::LLVMContext & context_
Definition: CgenState.h:359
llvm::Function * current_func_
Definition: CgenState.h:353
llvm::ConstantInt * inlineIntNull(const SQLTypeInfo &)
Definition: CgenState.cpp:64
bool is_boolean() const
Definition: sqltypes.h:517
#define AUTOMATIC_IR_METADATA(CGENSTATE)
#define CHECK(condition)
Definition: Logger.h:222
bool is_dict_encoded_string() const
Definition: sqltypes.h:548
std::unique_ptr< DiamondCodegen > null_check
llvm::ConstantFP * inlineFpNull(const SQLTypeInfo &)
Definition: CgenState.cpp:102
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 1437 of file IRCodegen.cpp.

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

Referenced by spatial_type::Transform::codegen().

1438  {
1440  CHECK(null_check);
1441  cgen_state->ir_builder_.CreateBr(nullcheck_bb);
1442 
1443  CHECK_EQ(null_lv->getType(), notnull_lv->getType());
1444 
1445  cgen_state->ir_builder_.SetInsertPoint(nullcheck_bb);
1446  nullcheck_value =
1447  cgen_state->ir_builder_.CreatePHI(null_lv->getType(), 2, name + "_value");
1448  nullcheck_value->addIncoming(notnull_lv, null_check->cond_false_);
1449  nullcheck_value->addIncoming(null_lv, null_check->cond_true_);
1450 
1451  null_check.reset(nullptr);
1452  cgen_state->ir_builder_.SetInsertPoint(nullcheck_bb);
1453  return nullcheck_value;
1454 }
#define CHECK_EQ(x, y)
Definition: Logger.h:230
llvm::BasicBlock * nullcheck_bb
llvm::IRBuilder ir_builder_
Definition: CgenState.h:361
#define AUTOMATIC_IR_METADATA(CGENSTATE)
#define CHECK(condition)
Definition: Logger.h:222
std::unique_ptr< DiamondCodegen > null_check

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Member Data Documentation

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

Definition at line 141 of file CodeGenerator.h.

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

Definition at line 145 of file CodeGenerator.h.

Referenced by NullCheckCodegen().

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

Definition at line 143 of file CodeGenerator.h.

Referenced by NullCheckCodegen().

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

Definition at line 144 of file CodeGenerator.h.


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