CGAtomic.cpp File Reference

#include "CGCall.h"
#include "CGRecordLayout.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "TargetInfo.h"
#include "clang/AST/ASTContext.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Operator.h"

Go to the source code of this file.

Functions
static RValue	emitAtomicLibcall (CodeGenFunction &CGF, StringRef fnName, QualType resultType, CallArgList &args)
static bool	isFullSizeType (CodeGenModule &CGM, llvm::Type *type, uint64_t expectedSize)
	Does a store of the given IR type modify the full expected width? More...
static void	emitAtomicCmpXchg (CodeGenFunction &CGF, AtomicExpr *E, bool IsWeak, Address Dest, Address Ptr, Address Val1, Address Val2, uint64_t Size, llvm::AtomicOrdering SuccessOrder, llvm::AtomicOrdering FailureOrder, llvm::SyncScope::ID Scope)
static void	emitAtomicCmpXchgFailureSet (CodeGenFunction &CGF, AtomicExpr *E, bool IsWeak, Address Dest, Address Ptr, Address Val1, Address Val2, llvm::Value *FailureOrderVal, uint64_t Size, llvm::AtomicOrdering SuccessOrder, llvm::SyncScope::ID Scope)
	Given an ordering required on success, emit all possible cmpxchg instructions to cope with the provided (but possibly only dynamically known) FailureOrder. More...
static llvm::Value *	EmitPostAtomicMinMax (CGBuilderTy &Builder, AtomicExpr::AtomicOp Op, bool IsSigned, llvm::Value *OldVal, llvm::Value *RHS)
	Duplicate the atomic min/max operation in conventional IR for the builtin variants that return the new rather than the original value. More...
static void	EmitAtomicOp (CodeGenFunction &CGF, AtomicExpr *E, Address Dest, Address Ptr, Address Val1, Address Val2, llvm::Value *IsWeak, llvm::Value *FailureOrder, uint64_t Size, llvm::AtomicOrdering Order, llvm::SyncScope::ID Scope)
static Address	EmitValToTemp (CodeGenFunction &CGF, Expr *E)
static void	EmitAtomicOp (CodeGenFunction &CGF, AtomicExpr *Expr, Address Dest, Address Ptr, Address Val1, Address Val2, llvm::Value *IsWeak, llvm::Value *FailureOrder, uint64_t Size, llvm::AtomicOrdering Order, llvm::Value *Scope)
static bool	shouldCastToInt (llvm::Type *ValTy, bool CmpXchg)
	Return true if. More...
static void	EmitAtomicUpdateValue (CodeGenFunction &CGF, AtomicInfo &Atomics, RValue OldRVal, const llvm::function_ref< RValue(RValue)> &UpdateOp, Address DesiredAddr)
static void	EmitAtomicUpdateValue (CodeGenFunction &CGF, AtomicInfo &Atomics, RValue UpdateRVal, Address DesiredAddr)

Function Documentation

emitAtomicCmpXchg()

static void emitAtomicCmpXchg ( CodeGenFunction &  CGF, AtomicExpr *  E, bool  IsWeak, Address  Dest, Address  Ptr, Address  Val1, Address  Val2, uint64_t  Size, llvm::AtomicOrdering  SuccessOrder, llvm::AtomicOrdering  FailureOrder, llvm::SyncScope::ID  Scope  )

static

Definition at line 378 of file CGAtomic.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CGBuilderTy::CreateAtomicCmpXchg(), clang::CodeGen::CGBuilderTy::CreateLoad(), and clang::AtomicExpr::isVolatile().

Referenced by emitAtomicCmpXchgFailureSet().

emitAtomicCmpXchgFailureSet()

static void emitAtomicCmpXchgFailureSet ( CodeGenFunction &  CGF, AtomicExpr *  E, bool  IsWeak, Address  Dest, Address  Ptr, Address  Val1, Address  Val2, llvm::Value *  FailureOrderVal, uint64_t  Size, llvm::AtomicOrdering  SuccessOrder, llvm::SyncScope::ID  Scope  )

static

Given an ordering required on success, emit all possible cmpxchg instructions to cope with the provided (but possibly only dynamically known) FailureOrder.

Definition at line 427 of file CGAtomic.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CodeGenFunction::CurFn, and emitAtomicCmpXchg().

Referenced by EmitAtomicOp().

emitAtomicLibcall()

static RValue emitAtomicLibcall ( CodeGenFunction &  CGF, StringRef  fnName, QualType  resultType, CallArgList &  args  )

static

Definition at line 316 of file CGAtomic.cpp.

References clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::CodeGenTypes::GetFunctionType(), clang::CodeGen::CodeGenFunction::getLLVMContext(), and clang::CodeGen::CodeGenModule::getTypes().

Referenced by clang::CodeGen::CodeGenFunction::EmitAtomicStore().

EmitAtomicOp() [1/2]

static void EmitAtomicOp ( CodeGenFunction &  CGF, AtomicExpr *  E, Address  Dest, Address  Ptr, Address  Val1, Address  Val2, llvm::Value *  IsWeak, llvm::Value *  FailureOrder, uint64_t  Size, llvm::AtomicOrdering  Order, llvm::SyncScope::ID  Scope  )

static

Definition at line 526 of file CGAtomic.cpp.

References clang::interp::Add(), clang::prec::And, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CGBuilderTy::CreateAtomicRMW(), clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CGBuilderTy::CreateStore(), clang::CodeGen::CodeGenFunction::CurFn, emitAtomicCmpXchgFailureSet(), EmitPostAtomicMinMax(), clang::AtomicExpr::getOp(), clang::AtomicExpr::getValueType(), clang::Type::isFloatingType(), clang::Type::isSignedIntegerType(), clang::AtomicExpr::isVolatile(), clang::interp::Load(), and clang::interp::Sub().

Referenced by EmitAtomicOp().

EmitAtomicOp() [2/2]

static void EmitAtomicOp ( CodeGenFunction &  CGF, AtomicExpr *  Expr, Address  Dest, Address  Ptr, Address  Val1, Address  Val2, llvm::Value *  IsWeak, llvm::Value *  FailureOrder, uint64_t  Size, llvm::AtomicOrdering  Order, llvm::Value *  Scope  )

static

Definition at line 760 of file CGAtomic.cpp.

References clang::CodeGen::CodeGenFunction::CGM, EmitAtomicOp(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::CodeGen::CodeGenModule::getLLVMContext(), clang::CodeGen::TargetCodeGenInfo::getLLVMSyncScopeID(), and clang::CodeGen::CodeGenFunction::getTargetHooks().

EmitAtomicUpdateValue() [1/2]

static void EmitAtomicUpdateValue ( CodeGenFunction &  CGF, AtomicInfo &  Atomics, RValue  OldRVal, const llvm::function_ref< RValue(RValue)> &  UpdateOp, Address  DesiredAddr  )

static

Definition at line 1711 of file CGAtomic.cpp.

EmitAtomicUpdateValue() [2/2]

static void EmitAtomicUpdateValue ( CodeGenFunction &  CGF, AtomicInfo &  Atomics, RValue  UpdateRVal, Address  DesiredAddr  )

static

Definition at line 1831 of file CGAtomic.cpp.

EmitPostAtomicMinMax()

static llvm::Value* EmitPostAtomicMinMax ( CGBuilderTy &  Builder, AtomicExpr::AtomicOp  Op, bool  IsSigned, llvm::Value *  OldVal, llvm::Value *  RHS  )

static

Duplicate the atomic min/max operation in conventional IR for the builtin variants that return the new rather than the original value.

Definition at line 504 of file CGAtomic.cpp.

Referenced by EmitAtomicOp().

EmitValToTemp()

static Address EmitValToTemp ( CodeGenFunction &  CGF, Expr *  E  )

static

Definition at line 753 of file CGAtomic.cpp.

References clang::CodeGen::CodeGenFunction::CreateMemTemp(), clang::CodeGen::CodeGenFunction::EmitAnyExprToMem(), clang::QualType::getQualifiers(), and clang::Expr::getType().

Referenced by clang::CodeGen::CodeGenFunction::EmitAtomicExpr().

isFullSizeType()

static bool isFullSizeType ( CodeGenModule &  CGM, llvm::Type *  type, uint64_t  expectedSize  )

static

Does a store of the given IR type modify the full expected width?

Definition at line 336 of file CGAtomic.cpp.

References clang::CodeGen::CodeGenModule::getDataLayout(), and clang::ast_matchers::type.

shouldCastToInt()

static bool shouldCastToInt ( llvm::Type *  ValTy, bool  CmpXchg  )

static

Return true if.

Parameters

ValTy	is a type that should be casted to integer around the atomic memory operation. If
CmpXchg	is true, then the cast of a floating point type is made as that instruction can not have floating point operands. TODO: Allow compare-and-exchange and FP - see comment in AtomicExpandPass.cpp.

Definition at line 1410 of file CGAtomic.cpp.

Referenced by clang::CodeGen::CodeGenFunction::EmitAtomicStore().