Fix up code to meet LiveInterval's requirements. More...
#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"#include "WebAssembly.h"#include "WebAssemblyMachineFunctionInfo.h"#include "WebAssemblySubtarget.h"#include "WebAssemblyUtilities.h"#include "llvm/CodeGen/MachineFunctionPass.h"#include "llvm/CodeGen/MachineInstrBuilder.h"#include "llvm/CodeGen/MachineRegisterInfo.h"#include "llvm/CodeGen/Passes.h"#include "llvm/Support/Debug.h"#include "llvm/Support/raw_ostream.h"
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Macros | |
| #define | DEBUG_TYPE "wasm-prepare-for-live-intervals" |
Functions | |
| INITIALIZE_PASS (WebAssemblyPrepareForLiveIntervals, DEBUG_TYPE, "Fix up code for LiveIntervals", false, false) FunctionPass *llvm | |
| static bool | HasArgumentDef (unsigned Reg, const MachineRegisterInfo &MRI) |
Detailed Description
Fix up code to meet LiveInterval's requirements.
Some CodeGen passes don't preserve LiveInterval's requirements, because they run after register allocation and it isn't important. However, WebAssembly runs LiveIntervals in a late pass. This pass transforms code to meet LiveIntervals' requirements; primarily, it ensures that all virtual register uses have definitions (IMPLICIT_DEF definitions if nothing else).
Definition in file WebAssemblyPrepareForLiveIntervals.cpp.
Macro Definition Documentation
◆ DEBUG_TYPE
| #define DEBUG_TYPE "wasm-prepare-for-live-intervals" |
Definition at line 35 of file WebAssemblyPrepareForLiveIntervals.cpp.
Function Documentation
◆ HasArgumentDef()
|
static |
Definition at line 66 of file WebAssemblyPrepareForLiveIntervals.cpp.
References assert(), llvm::MachineBasicBlock::begin(), llvm::MachineFunction::begin(), llvm::BuildMI(), llvm::dbgs(), llvm::tgtok::Def, llvm::MachineRegisterInfo::def_instructions(), llvm::MachineBasicBlock::end(), llvm::MachineFunction::getName(), llvm::MachineRegisterInfo::getNumVirtRegs(), llvm::MachineFunction::getProperties(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::TargetRegisterInfo::index2VirtReg(), llvm::MachineBasicBlock::insert(), llvm::WebAssembly::isArgument(), llvm::MachineRegisterInfo::leaveSSA(), llvm::LiveIntervalsID, LLVM_DEBUG, MI, MRI, Reg, llvm::MachineInstr::removeFromParent(), llvm::MachineFunctionProperties::set(), TII, llvm::MachineFunctionProperties::TracksLiveness, and llvm::MachineRegisterInfo::use_nodbg_empty().
◆ INITIALIZE_PASS()
| INITIALIZE_PASS | ( | WebAssemblyPrepareForLiveIntervals | , |
| DEBUG_TYPE | , | ||
| "Fix up code for LiveIntervals" | , | ||
| false | , | ||
| false | |||
| ) |
Definition at line 58 of file WebAssemblyPrepareForLiveIntervals.cpp.
