//===-- 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 <iosfwd>
-class TargetMachine;
-class Pass;
-
-/// createSimpleX86InstructionSelector - This pass converts an LLVM function
-/// into a machine code representation is a very simple peep-hole fashion. The
-/// generated code sucks but the implementation is nice and simple.
-///
-Pass *createSimpleX86InstructionSelector(TargetMachine &TM);
-
-/// createX86PeepholeOptimizer - Create a pass to perform X86 specific peephole
-/// optimizations.
-///
-Pass *createX86PeepholeOptimizerPass();
-
-/// createX86FloatingPointStackifierPass - This function returns a pass which
-/// converts floating point register references and pseudo instructions into
-/// floating point stack references and physical instructions.
-///
-Pass *createX86FloatingPointStackifierPass();
-
-/// createX86CodePrinterPass - Print out the specified machine code function to
-/// the specified stream. This function should work regardless of whether or
-/// not the function is in SSA form or not.
-///
-Pass *createX86CodePrinterPass(std::ostream &O);
-
-/// X86EmitCodeToMemory - This function converts a register allocated function
-/// into raw machine code in a dynamically allocated chunk of memory. A pointer
-/// to the start of the function is returned.
-///
-Pass *createEmitX86CodeToMemory();
-
-/// X86 namespace - This namespace contains all of the register and opcode enums
-/// used by the X86 backend.
-///
-namespace X86 {
- // Defines a large number of symbolic names for X86 registers. This defines a
- // mapping from register name to register number.
- //
- enum Register {
-#define R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) ENUM,
-#include "X86RegisterInfo.def"
- };
-
- // This defines a large number of symbolic names for X86 instruction opcodes.
- enum Opcode {
-#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS, IMPDEFS, IMPUSES) ENUM,
-#include "X86InstrInfo.def"
- };
-}
+#ifndef LLVM_LIB_TARGET_X86_X86_H
+#define LLVM_LIB_TARGET_X86_X86_H
+
+#include "llvm/Support/CodeGen.h"
+
+namespace llvm {
+
+class FunctionPass;
+class ImmutablePass;
+class X86TargetMachine;
+
+/// This pass converts a legalized DAG into a X86-specific DAG, ready for
+/// instruction scheduling.
+FunctionPass *createX86ISelDag(X86TargetMachine &TM,
+ CodeGenOpt::Level OptLevel);
+
+/// This pass initializes a global base register for PIC on x86-32.
+FunctionPass *createX86GlobalBaseRegPass();
+
+/// 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();
+
+/// This function returns a pass which converts floating-point register
+/// references and pseudo instructions into floating-point stack references and
+/// physical instructions.
+FunctionPass *createX86FloatingPointStackifierPass();
+
+/// This pass inserts AVX vzeroupper instructions before each call to avoid
+/// transition penalty between functions encoded with AVX and SSE.
+FunctionPass *createX86IssueVZeroUpperPass();
+
+/// Return a pass that pads short functions with NOOPs.
+/// This will prevent a stall when returning on the Atom.
+FunctionPass *createX86PadShortFunctions();
+
+/// Return 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 processors.
+FunctionPass *createX86FixupLEAs();
+
+/// Return a pass that removes redundant LEA instructions and redundant address
+/// recalculations.
+FunctionPass *createX86OptimizeLEAs();
+
+/// Return a pass that optimizes the code-size of x86 call sequences. This is
+/// done by replacing esp-relative movs with pushes.
+FunctionPass *createX86CallFrameOptimization();
+
+/// Return an IR pass that inserts EH registration stack objects and explicit
+/// EH state updates. This pass must run after EH preparation, which does
+/// Windows-specific but architecture-neutral preparation.
+FunctionPass *createX86WinEHStatePass();
+
+/// Return a Machine IR pass that expands X86-specific pseudo
+/// instructions into a sequence of actual instructions. This pass
+/// must run after prologue/epilogue insertion and before lowering
+/// the MachineInstr to MC.
+FunctionPass *createX86ExpandPseudoPass();
+} // End llvm namespace
#endif
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