DiamondCodegen Struct Reference

#include <DiamondCodegen.h>

Collaboration diagram for DiamondCodegen:

Public Member Functions
	DiamondCodegen (llvm::Value *cond, Executor *executor, const bool chain_to_next, const std::string &label_prefix, DiamondCodegen *parent, const bool share_false_edge_with_parent)
void	setChainToNext ()
void	setFalseTarget (llvm::BasicBlock *cond_false)
	~DiamondCodegen ()

Public Attributes
Executor *	executor_
llvm::BasicBlock *	cond_true_
llvm::BasicBlock *	cond_false_
llvm::BasicBlock *	orig_cond_false_
bool	chain_to_next_
DiamondCodegen *	parent_

Detailed Description

Helper struct for generating a branching instruction in LLVM IR. The diamond refers to both branches, the starting basic block, and the ending block. The true and false basic blocks are created on initialization, and the branches are created at destruction.

Definition at line 30 of file DiamondCodegen.h.

Constructor & Destructor Documentation

DiamondCodegen::DiamondCodegen	(	llvm::Value *	cond,
		Executor *	executor,
		const bool	chain_to_next,
		const std::string &	label_prefix,
		DiamondCodegen *	parent,
		const bool	share_false_edge_with_parent
	)

Definition at line 22 of file DiamondCodegen.cpp.

References AUTOMATIC_IR_METADATA, chain_to_next_, CHECK, cond_false_, cond_true_, executor_, orig_cond_false_, and parent_.

    : executor_(executor), chain_to_next_(chain_to_next), parent_(parent) {
  auto* cgen_state = executor_->cgen_state_.get();
  CHECK(cgen_state);
  AUTOMATIC_IR_METADATA(cgen_state);
  if (parent_) {
    CHECK(!chain_to_next_);
  }
  cond_true_ = llvm::BasicBlock::Create(
      cgen_state->context_, label_prefix + "_true", cgen_state->current_func_);
  if (share_false_edge_with_parent) {
    CHECK(parent);
    orig_cond_false_ = cond_false_ = parent_->cond_false_;
  } else {
    orig_cond_false_ = cond_false_ = llvm::BasicBlock::Create(
        cgen_state->context_, label_prefix + "_false", cgen_state->current_func_);
  }

  cgen_state->ir_builder_.CreateCondBr(cond, cond_true_, cond_false_);
  cgen_state->ir_builder_.SetInsertPoint(cond_true_);
}

DiamondCodegen::~DiamondCodegen

(

)

Definition at line 59 of file DiamondCodegen.cpp.

References AUTOMATIC_IR_METADATA, chain_to_next_, cond_false_, executor_, orig_cond_false_, and parent_.

                                {
  AUTOMATIC_IR_METADATA(executor_->cgen_state_.get());
  auto& builder = executor_->cgen_state_->ir_builder_;
  if (parent_ && orig_cond_false_ != parent_->cond_false_) {
    builder.CreateBr(parent_->cond_false_);
  } else if (chain_to_next_) {
    builder.CreateBr(cond_false_);
  }
  if (!parent_ || (!chain_to_next_ && cond_false_ != parent_->cond_false_)) {
    builder.SetInsertPoint(orig_cond_false_);
  }
}

Member Function Documentation

void DiamondCodegen::setChainToNext

(

)

Definition at line 49 of file DiamondCodegen.cpp.

References chain_to_next_, CHECK, and parent_.

                                    {
  CHECK(!parent_);
  chain_to_next_ = true;
}

void DiamondCodegen::setFalseTarget

(

llvm::BasicBlock *

cond_false

)

Definition at line 54 of file DiamondCodegen.cpp.

References CHECK, cond_false_, orig_cond_false_, and parent_.

Referenced by Executor::groupByColumnCodegen().

                                                              {
  CHECK(!parent_ || orig_cond_false_ != parent_->cond_false_);
  cond_false_ = cond_false;
}

Here is the caller graph for this function:

Member Data Documentation

bool DiamondCodegen::chain_to_next_

Definition at line 45 of file DiamondCodegen.h.

Referenced by DiamondCodegen(), setChainToNext(), and ~DiamondCodegen().

llvm::BasicBlock* DiamondCodegen::cond_false_

Definition at line 43 of file DiamondCodegen.h.

Referenced by GroupByAndAggregate::codegen(), TargetExprCodegen::codegenAggregate(), DiamondCodegen(), setFalseTarget(), and ~DiamondCodegen().

llvm::BasicBlock* DiamondCodegen::cond_true_

Definition at line 42 of file DiamondCodegen.h.

Referenced by TargetExprCodegen::codegenAggregate(), and DiamondCodegen().

Executor* DiamondCodegen::executor_

Definition at line 41 of file DiamondCodegen.h.

Referenced by DiamondCodegen(), and ~DiamondCodegen().

llvm::BasicBlock* DiamondCodegen::orig_cond_false_

Definition at line 44 of file DiamondCodegen.h.

Referenced by DiamondCodegen(), Executor::groupByColumnCodegen(), setFalseTarget(), and ~DiamondCodegen().

DiamondCodegen* DiamondCodegen::parent_

Definition at line 46 of file DiamondCodegen.h.

Referenced by DiamondCodegen(), setChainToNext(), setFalseTarget(), and ~DiamondCodegen().

---

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

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/Utils/DiamondCodegen.h
• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/Utils/DiamondCodegen.cpp