Teach LoopSimplify how to merge multiple loop exits into a single exit,

[oota-llvm.git] / include / llvm / Transforms / Scalar.h

diff --git a/include/llvm/Transforms/Scalar.h b/include/llvm/Transforms/Scalar.h
index eb6e012feac096445ba840d1d8f2683a7d6cfaa3..971baeef910011ef09772ec4ac694db31a39dd82 100644 (file)
--- a/include/llvm/Transforms/Scalar.h
+++ b/include/llvm/Transforms/Scalar.h
@@ -15,12 +15,9 @@
 #ifndef LLVM_TRANSFORMS_SCALAR_H
 #define LLVM_TRANSFORMS_SCALAR_H
 
-#include <cstdlib>
-
 namespace llvm {
 
 class FunctionPass;
-class LoopPass;
 class Pass;
 class GetElementPtrInst;
 class PassInfo;
@@ -78,21 +75,12 @@ FunctionPass *createAggressiveDCEPass();
 //
 FunctionPass *createScalarReplAggregatesPass(signed Threshold = -1);
 
-//===----------------------------------------------------------------------===//
-//
-// GCSE - This pass is designed to be a very quick global transformation that
-// eliminates global common subexpressions from a function.  It does this by
-// examining the SSA value graph of the function, instead of doing slow
-// bit-vector computations.
-//
-FunctionPass *createGCSEPass();
-
 //===----------------------------------------------------------------------===//
 //
 // InductionVariableSimplify - Transform induction variables in a program to all
 // use a single canonical induction variable per loop.
 //
-LoopPass *createIndVarSimplifyPass();
+Pass *createIndVarSimplifyPass();
 
 //===----------------------------------------------------------------------===//
 //
@@ -112,7 +100,7 @@ FunctionPass *createInstructionCombiningPass();
 //
 // LICM - This pass is a loop invariant code motion and memory promotion pass.
 //
-LoopPass *createLICMPass();
+Pass *createLICMPass();
 
 //===----------------------------------------------------------------------===//
 //
@@ -121,33 +109,32 @@ LoopPass *createLICMPass();
 // optional parameter used to consult the target machine whether certain
 // transformations are profitable.
 //
-LoopPass *createLoopStrengthReducePass(const TargetLowering *TLI = 0);
+Pass *createLoopStrengthReducePass(const TargetLowering *TLI = 0);
 
 //===----------------------------------------------------------------------===//
 //
 // LoopUnswitch - This pass is a simple loop unswitching pass.
 //
-LoopPass *createLoopUnswitchPass(bool OptimizeForSize = false);
+Pass *createLoopUnswitchPass(bool OptimizeForSize = false);
 
 //===----------------------------------------------------------------------===//
 //
 // LoopUnroll - This pass is a simple loop unrolling pass.
 //
-LoopPass *createLoopUnrollPass();
+Pass *createLoopUnrollPass();
 
 //===----------------------------------------------------------------------===//
 //
 // LoopRotate - This pass is a simple loop rotating pass.
 //
-LoopPass *createLoopRotatePass();
+Pass *createLoopRotatePass();
 
 //===----------------------------------------------------------------------===//
 //
 // LoopIndexSplit - This pass divides loop's iteration range by spliting loop
 // such that each individual loop is executed efficiently.
 //
-LoopPass *createLoopIndexSplitPass();
-
+Pass *createLoopIndexSplitPass();
 
 //===----------------------------------------------------------------------===//
 //
@@ -156,13 +143,13 @@ LoopPass *createLoopIndexSplitPass();
 // this pass is:
 //
 //        FROM CODE                           TO CODE
-//   %X = alloca int, uint 1                 ret int 42
-//   store int 42, int *%X
-//   %Y = load int* %X
-//   ret int %Y
+//   %X = alloca i32, i32 1                 ret i32 42
+//   store i32 42, i32 *%X
+//   %Y = load i32* %X
+//   ret i32 %Y
 //
 FunctionPass *createPromoteMemoryToRegisterPass();
-extern const PassInfo *PromoteMemoryToRegisterID;
+extern const PassInfo *const PromoteMemoryToRegisterID;
 
 //===----------------------------------------------------------------------===//
 //
@@ -171,7 +158,7 @@ extern const PassInfo *PromoteMemoryToRegisterID;
 // hacking easier.
 //
 FunctionPass *createDemoteRegisterToMemoryPass();
-extern const PassInfo *DemoteRegisterToMemoryID;
+extern const PassInfo *const DemoteRegisterToMemoryID;
 
 //===----------------------------------------------------------------------===//
 //
@@ -197,6 +184,13 @@ FunctionPass *createCondPropagationPass();
 //
 FunctionPass *createTailDuplicationPass();
 
+//===----------------------------------------------------------------------===//
+//
+// JumpThreading - Thread control through mult-pred/multi-succ blocks where some
+// preds always go to some succ.
+//
+FunctionPass *createJumpThreadingPass();
+  
 //===----------------------------------------------------------------------===//
 //
 // CFGSimplification - Merge basic blocks, eliminate unreachable blocks,
@@ -216,7 +210,7 @@ FunctionPass *createCFGSimplificationPass();
 // (set, immediate dominators, tree, and frontier) information.
 //
 FunctionPass *createBreakCriticalEdgesPass();
-extern const PassInfo *BreakCriticalEdgesID;
+extern const PassInfo *const BreakCriticalEdgesID;
 
 //===----------------------------------------------------------------------===//
 //
@@ -227,16 +221,7 @@ extern const PassInfo *BreakCriticalEdgesID;
 //   AU.addRequiredID(LoopSimplifyID);
 //
 FunctionPass *createLoopSimplifyPass();
-extern const PassInfo *LoopSimplifyID;
-
-//===----------------------------------------------------------------------===//
-//
-// LowerSelect - This pass converts SelectInst instructions into conditional
-// branch and PHI instructions. If the OnlyFP flag is set to true, then only
-// floating point select instructions are lowered.
-//
-FunctionPass *createLowerSelectPass(bool OnlyFP = false);
-extern const PassInfo *LowerSelectID;
+extern const PassInfo *const LoopSimplifyID;
 
 //===----------------------------------------------------------------------===//
 //
@@ -246,7 +231,7 @@ extern const PassInfo *LowerSelectID;
 //   AU.addRequiredID(LowerAllocationsID);
 //
 Pass *createLowerAllocationsPass(bool LowerMallocArgToInteger = false);
-extern const PassInfo *LowerAllocationsID;
+extern const PassInfo *const LowerAllocationsID;
 
 //===----------------------------------------------------------------------===//
 //
@@ -261,7 +246,7 @@ FunctionPass *createTailCallEliminationPass();
 // chained binary branch instructions.
 //
 FunctionPass *createLowerSwitchPass();
-extern const PassInfo *LowerSwitchID;
+extern const PassInfo *const LowerSwitchID;
 
 //===----------------------------------------------------------------------===//
 //
@@ -273,8 +258,8 @@ extern const PassInfo *LowerSwitchID;
 // purpose "my LLVM-to-LLVM pass doesn't support the invoke instruction yet"
 // lowering pass.
 //
-FunctionPass *createLowerInvokePass(const TargetLowering *TLI = NULL);
-extern const PassInfo *LowerInvokePassID;
+FunctionPass *createLowerInvokePass(const TargetLowering *TLI = 0);
+extern const PassInfo *const LowerInvokePassID;
 
 //===----------------------------------------------------------------------===//
 //
@@ -288,8 +273,8 @@ FunctionPass *createBlockPlacementPass();
 // LCSSA - This pass inserts phi nodes at loop boundaries to simplify other loop
 // optimizations.
 //
-LoopPass *createLCSSAPass();
-extern const PassInfo *LCSSAID;
+Pass *createLCSSAPass();
+extern const PassInfo *const LCSSAID;
 
 //===----------------------------------------------------------------------===//
 //
@@ -312,12 +297,46 @@ FunctionPass *createGVNPREPass();
 //
 FunctionPass *createGVNPass();
 
+//===----------------------------------------------------------------------===//
+//
+// MemCpyOpt - This pass performs optimizations related to eliminating memcpy
+// calls and/or combining multiple stores into memset's.
+//
+FunctionPass *createMemCpyOptPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopDeletion - This pass performs DCE of non-infinite loops that it
+// can prove are dead.
+//
+Pass *createLoopDeletionPass();
+  
+//===----------------------------------------------------------------------===//
+//
+/// createSimplifyLibCallsPass - This pass optimizes specific calls to
+/// specific well-known (library) functions.
+FunctionPass *createSimplifyLibCallsPass();
+
+//===----------------------------------------------------------------------===//
+//
+/// createSimplifyHalfPowrLibCallsPass - This is an experimental pass that
+/// optimizes specific half_pow functions.
+FunctionPass *createSimplifyHalfPowrLibCallsPass();
+
 //===----------------------------------------------------------------------===//
 //
 // CodeGenPrepare - This pass prepares a function for instruction selection.
 //
 FunctionPass *createCodeGenPreparePass(const TargetLowering *TLI = 0);
 
+  
+//===----------------------------------------------------------------------===//
+//
+// InstructionNamer - Give any unnamed non-void instructions "tmp" names.
+//
+FunctionPass *createInstructionNamerPass();
+extern const PassInfo *const InstructionNamerID;
+  
 } // End llvm namespace
 
 #endif