mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-28 19:31:58 +00:00
d6ac8e9a03
latency for certain models of the Intel Atom family, by converting instructions into their equivalent LEA instructions, when it is both useful and possible to do so. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180573 91177308-0d34-0410-b5e6-96231b3b80d8
81 lines
3.0 KiB
C++
81 lines
3.0 KiB
C++
//===-- X86.h - Top-level interface for X86 representation ------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the entry points for global functions defined in the x86
|
|
// target library, as used by the LLVM JIT.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef TARGET_X86_H
|
|
#define TARGET_X86_H
|
|
|
|
#include "MCTargetDesc/X86BaseInfo.h"
|
|
#include "MCTargetDesc/X86MCTargetDesc.h"
|
|
#include "llvm/Support/DataTypes.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
|
|
namespace llvm {
|
|
|
|
class FunctionPass;
|
|
class JITCodeEmitter;
|
|
class X86TargetMachine;
|
|
|
|
/// createX86ISelDag - This pass converts a legalized DAG into a
|
|
/// X86-specific DAG, ready for instruction scheduling.
|
|
///
|
|
FunctionPass *createX86ISelDag(X86TargetMachine &TM,
|
|
CodeGenOpt::Level OptLevel);
|
|
|
|
/// createGlobalBaseRegPass - This pass initializes a global base
|
|
/// register for PIC on x86-32.
|
|
FunctionPass* createGlobalBaseRegPass();
|
|
|
|
/// createCleanupLocalDynamicTLSPass() - This pass combines multiple accesses
|
|
/// to local-dynamic TLS variables so that the TLS base address for the module
|
|
/// is only fetched once per execution path through the function.
|
|
FunctionPass *createCleanupLocalDynamicTLSPass();
|
|
|
|
/// createX86FloatingPointStackifierPass - This function returns a pass which
|
|
/// converts floating point register references and pseudo instructions into
|
|
/// floating point stack references and physical instructions.
|
|
///
|
|
FunctionPass *createX86FloatingPointStackifierPass();
|
|
|
|
/// createX86IssueVZeroUpperPass - This pass inserts AVX vzeroupper instructions
|
|
/// before each call to avoid transition penalty between functions encoded with
|
|
/// AVX and SSE.
|
|
FunctionPass *createX86IssueVZeroUpperPass();
|
|
|
|
/// createX86CodeEmitterPass - Return a pass that emits the collected X86 code
|
|
/// to the specified MCE object.
|
|
FunctionPass *createX86JITCodeEmitterPass(X86TargetMachine &TM,
|
|
JITCodeEmitter &JCE);
|
|
|
|
/// createX86EmitCodeToMemory - Returns a pass that converts a register
|
|
/// allocated function into raw machine code in a dynamically
|
|
/// allocated chunk of memory.
|
|
///
|
|
FunctionPass *createEmitX86CodeToMemory();
|
|
|
|
/// \brief Creates an X86-specific Target Transformation Info pass.
|
|
ImmutablePass *createX86TargetTransformInfoPass(const X86TargetMachine *TM);
|
|
|
|
/// createX86PadShortFunctions - Return a pass that pads short functions
|
|
/// with NOOPs. This will prevent a stall when returning on the Atom.
|
|
FunctionPass *createX86PadShortFunctions();
|
|
/// createX86FixupLEAs - Return a a pass that selectively replaces
|
|
/// certain instructions (like add, sub, inc, dec, some shifts,
|
|
/// and some multiplies) by equivalent LEA instructions, in order
|
|
/// to eliminate execution delays in some Atom processors.
|
|
FunctionPass *createX86FixupLEAs();
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|