Use instruction itinerary to determine what instructions are 'cheap'.

[oota-llvm.git] / include / llvm / CodeGen / Passes.h

diff --git a/include/llvm/CodeGen/Passes.h b/include/llvm/CodeGen/Passes.h
index 5c1485366292e9f6e9fc5b21bb4fc6d199a64366..bbedabd40779996bc0c9be9c0b4a0b38eba26860 100644 (file)
--- a/include/llvm/CodeGen/Passes.h
+++ b/include/llvm/CodeGen/Passes.h
@@ -30,23 +30,23 @@ namespace llvm {
   /// createUnreachableBlockEliminationPass - The LLVM code generator does not
   /// work well with unreachable basic blocks (what live ranges make sense for a
   /// block that cannot be reached?).  As such, a code generator should either
-  /// not instruction select unreachable blocks, or it can run this pass as it's
+  /// not instruction select unreachable blocks, or run this pass as its
   /// last LLVM modifying pass to clean up blocks that are not reachable from
   /// the entry block.
   FunctionPass *createUnreachableBlockEliminationPass();
 
   /// MachineFunctionPrinter pass - This pass prints out the machine function to
-  /// the given stream, as a debugging tool.
+  /// the given stream as a debugging tool.
   MachineFunctionPass *
   createMachineFunctionPrinterPass(raw_ostream &OS,
                                    const std::string &Banner ="");
 
   /// MachineLoopInfo pass - This pass is a loop analysis pass.
-  /// 
+  ///
   extern char &MachineLoopInfoID;
 
   /// MachineDominators pass - This pass is a machine dominators analysis pass.
-  /// 
+  ///
   extern char &MachineDominatorsID;
 
   /// PHIElimination pass - This pass eliminates machine instruction PHI nodes
@@ -55,7 +55,7 @@ namespace llvm {
   /// these register allocator like this: AU.addRequiredID(PHIEliminationID);
   ///
   extern char &PHIEliminationID;
-  
+
   /// StrongPHIElimination pass - This pass eliminates machine instruction PHI
   /// nodes by inserting copy instructions.  This destroys SSA information, but
   /// is the desired input for some register allocators.  This pass is
@@ -66,6 +66,9 @@ namespace llvm {
 
   extern char &PreAllocSplittingID;
 
+  /// LiveStacks pass. An analysis keeping track of the liveness of stack slots.
+  extern char &LiveStacksID;
+
   /// SimpleRegisterCoalescing pass.  Aggressively coalesces every register
   /// copy it can.
   ///
@@ -95,6 +98,11 @@ namespace llvm {
   ///
   FunctionPass *createFastRegisterAllocator();
 
+  /// BasicRegisterAllocation Pass - This pass implements a degenerate global
+  /// register allocator using the basic regalloc framework.
+  ///
+  FunctionPass *createBasicRegisterAllocator();
+
   /// LinearScanRegisterAllocation Pass - This pass implements the linear scan
   /// register allocation algorithm, a global register allocator.
   ///
@@ -103,7 +111,7 @@ namespace llvm {
   /// PBQPRegisterAllocation Pass - This pass implements the Partitioned Boolean
   /// Quadratic Prograaming (PBQP) based register allocator.
   ///
-  FunctionPass *createPBQPRegisterAllocator();
+  FunctionPass *createDefaultPBQPRegisterAllocator();
 
   /// SimpleRegisterCoalescing Pass - Coalesce all copies possible.  Can run
   /// independently of the register allocator.
@@ -114,7 +122,7 @@ namespace llvm {
   /// and eliminates abstract frame references.
   ///
   FunctionPass *createPrologEpilogCodeInserter();
-  
+
   /// LowerSubregs Pass - This pass lowers subregs to register-register copies
   /// which yields suboptimal, but correct code if the register allocator
   /// cannot coalesce all subreg operations during allocation.
@@ -145,36 +153,36 @@ namespace llvm {
   /// IntrinsicLowering Pass - Performs target-independent LLVM IR
   /// transformations for highly portable strategies.
   FunctionPass *createGCLoweringPass();
-  
+
   /// MachineCodeAnalysis Pass - Target-independent pass to mark safe points in
   /// machine code. Must be added very late during code generation, just prior
   /// to output, and importantly after all CFG transformations (such as branch
   /// folding).
   FunctionPass *createGCMachineCodeAnalysisPass();
-  
+
   /// Deleter Pass - Releases GC metadata.
-  /// 
+  ///
   FunctionPass *createGCInfoDeleter();
-  
+
   /// Creates a pass to print GC metadata.
-  /// 
+  ///
   FunctionPass *createGCInfoPrinter(raw_ostream &OS);
-  
+
   /// createMachineCSEPass - This pass performs global CSE on machine
   /// instructions.
   FunctionPass *createMachineCSEPass();
 
   /// createMachineLICMPass - This pass performs LICM on machine instructions.
-  /// 
+  ///
   FunctionPass *createMachineLICMPass(bool PreRegAlloc = true);
 
   /// createMachineSinkingPass - This pass performs sinking on machine
   /// instructions.
   FunctionPass *createMachineSinkingPass();
 
-  /// createOptimizeExtsPass - This pass performs sign / zero extension
-  /// optimization by increasing uses of extended values.
-  FunctionPass *createOptimizeExtsPass();
+  /// createPeepholeOptimizerPass - This pass performs peephole optimizations -
+  /// like extension and comparison eliminations.
+  FunctionPass *createPeepholeOptimizerPass();
 
   /// createOptimizePHIsPass - This pass optimizes machine instruction PHIs
   /// to take advantage of opportunities created during DAG legalization.
@@ -192,12 +200,19 @@ namespace llvm {
 
   /// createDwarfEHPass - This pass mulches exception handling code into a form
   /// adapted to code generation.  Required if using dwarf exception handling.
-  FunctionPass *createDwarfEHPass(const TargetMachine *tm, bool fast);
+  FunctionPass *createDwarfEHPass(const TargetMachine *tm);
 
   /// createSjLjEHPass - This pass adapts exception handling code to use
   /// the GCC-style builtin setjmp/longjmp (sjlj) to handling EH control flow.
   FunctionPass *createSjLjEHPass(const TargetLowering *tli);
 
+  /// createLocalStackSlotAllocationPass - This pass assigns local frame
+  /// indices to stack slots relative to one another and allocates
+  /// base registers to access them when it is estimated by the target to
+  /// be out of range of normal frame pointer or stack pointer index
+  /// addressing.
+  FunctionPass *createLocalStackSlotAllocationPass();
+
 } // End llvm namespace
 
 #endif