LEA code size optimization pass (Part 2): Remove redundant LEA instructions.

[oota-llvm.git] / lib / Target / X86 / X86.h

diff --git a/lib/Target/X86/X86.h b/lib/Target/X86/X86.h
index bf05ccfe99a6363620a9ee22f8cbe2c35c5663b1..01e65b89f480cf44922af8bc4c2109150f9d5aac 100644 (file)
--- a/lib/Target/X86/X86.h
+++ b/lib/Target/X86/X86.h
@@ -12,63 +12,66 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef TARGET_X86_H
-#define TARGET_X86_H
+#ifndef LLVM_LIB_TARGET_X86_X86_H
+#define LLVM_LIB_TARGET_X86_X86_H
 
-#include "MCTargetDesc/X86BaseInfo.h"
-#include "MCTargetDesc/X86MCTargetDesc.h"
-#include "llvm/Support/DataTypes.h"
-#include "llvm/Target/TargetMachine.h"
+#include "llvm/Support/CodeGen.h"
 
 namespace llvm {
 
 class FunctionPass;
-class JITCodeEmitter;
+class ImmutablePass;
 class X86TargetMachine;
 
-/// createX86ISelDag - This pass converts a legalized DAG into a 
-/// X86-specific DAG, ready for instruction scheduling.
-///
+/// 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();
+/// This pass initializes a global base register for PIC on x86-32.
+FunctionPass *createX86GlobalBaseRegPass();
 
-/// 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.
+/// 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.
-///
+/// 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.
+/// 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);
+/// Return a pass that pads short functions with NOOPs.
+/// This will prevent a stall when returning on the Atom.
+FunctionPass *createX86PadShortFunctions();
 
-/// createX86EmitCodeToMemory - Returns a pass that converts a register
-/// allocated function into raw machine code in a dynamically
-/// allocated chunk of memory.
-///
-FunctionPass *createEmitX86CodeToMemory();
+/// 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();
 
-/// createX86MaxStackAlignmentHeuristicPass - This function returns a pass
-/// which determines whether the frame pointer register should be
-/// reserved in case dynamic stack alignment is later required.
-///
-FunctionPass *createX86MaxStackAlignmentHeuristicPass();
+/// 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