#include "MCTargetDesc/PPCPredicates.h"
#include "PPC.h"
#include "PPCInstrBuilder.h"
#include "PPCInstrInfo.h"
#include "PPCSubtarget.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetMachine.h"
#include <algorithm>

Include dependency graph for PPCBranchSelector.cpp:

Macros
#define	DEBUG_TYPE "ppc-branch-select"

Functions
	STATISTIC (NumExpanded, "Number of branches expanded to long format")

	INITIALIZE_PASS (PPCBSel, "ppc-branch-select", "PowerPC Branch Selector", false, false) FunctionPass *llvm
	createPPCBranchSelectionPass - returns an instance of the Branch Selection Pass More...

static unsigned	GetInitialOffset (MachineFunction &Fn)
	We need to be careful about the offset of the first block in the function because it might not have the function's alignment. More...

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE "ppc-branch-select"

Definition at line 31 of file PPCBranchSelector.cpp.

Function Documentation

◆ GetInitialOffset()

static unsigned GetInitialOffset ( MachineFunction & Fn )

inlinestatic

We need to be careful about the offset of the first block in the function because it might not have the function's alignment.

This happens because, under the ELFv2 ABI, for functions which require a TOC pointer, we add a two-instruction sequence to the start of the function. Note: This needs to be synchronized with the check in PPCLinuxAsmPrinter::EmitFunctionBodyStart.

Definition at line 107 of file PPCBranchSelector.cpp.

References llvm::MachineInstrBuilder::addImm(), B, llvm::PPCISD::BDNZ, llvm::PPCISD::BDZ, llvm::MachineBasicBlock::begin(), llvm::MachineFunction::begin(), BlockSize, llvm::BuildMI(), E, llvm::MachineBasicBlock::end(), llvm::MachineFunction::end(), llvm::MachineInstr::eraseFromParent(), llvm::MachineBasicBlock::getAlignment(), llvm::MachineFunction::getBlockNumbered(), llvm::MachineInstr::getDebugLoc(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::PPCInstrInfo::getInstSizeInBytes(), llvm::MachineBasicBlock::getNumber(), llvm::MachineFunction::getNumBlockIDs(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), I, llvm::PPC::InvertPredicate(), llvm::PPCSubtarget::isELFv2ABI(), llvm::isInt< 16 >(), llvm_unreachable, llvm::max(), MI, llvm::MachineFunction::RenumberBlocks(), TII, and llvm::MachineRegisterInfo::use_empty().

◆ INITIALIZE_PASS()

INITIALIZE_PASS	(	PPCBSel	,
		"ppc-branch-select"	,
		"PowerPC Branch Selector"	,
		false	,
		false
	)

createPPCBranchSelectionPass - returns an instance of the Branch Selection Pass

Definition at line 70 of file PPCBranchSelector.cpp.

References llvm::AMDGPU::HSAMD::Kernel::Arg::Key::Align, llvm::MachineBasicBlock::getAlignment(), llvm::MachineFunction::getAlignment(), llvm::MachineBasicBlock::getNumber(), llvm::MachineBasicBlock::getParent(), and llvm::OffsetToAlignment().

◆ STATISTIC()

STATISTIC	(	NumExpanded	,
		"Number of branches expanded to long format"
	)