From 88d15ab0d62293b0a0471abb4d317f5de37258f6 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 7 May 2002 18:18:00 +0000
Subject: [PATCH] Factor code out to the Transform Utils library

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2519 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Transforms/Scalar/ConstantProp.h | 16 ----------
 include/llvm/Transforms/Scalar/DCE.h          | 29 ++-----------------
 2 files changed, 3 insertions(+), 42 deletions(-)

diff --git a/include/llvm/Transforms/Scalar/ConstantProp.h b/include/llvm/Transforms/Scalar/ConstantProp.h
index 0da13e9fdbd..a093867b32a 100644
--- a/include/llvm/Transforms/Scalar/ConstantProp.h
+++ b/include/llvm/Transforms/Scalar/ConstantProp.h
@@ -7,8 +7,6 @@
 #ifndef LLVM_TRANSFORMS_SCALAR_CONSTANT_PROPOGATION_H
 #define LLVM_TRANSFORMS_SCALAR_CONSTANT_PROPOGATION_H
 
-#include "llvm/BasicBlock.h"
-class TerminatorInst;
 class Pass;
 
 //===----------------------------------------------------------------------===//
@@ -16,20 +14,6 @@ class Pass;
 //
 Pass *createConstantPropogationPass();
 
-// doConstantPropogation - Constant prop a specific instruction.  Returns true
-// and potentially moves the iterator if constant propogation was performed.
-//
-bool doConstantPropogation(BasicBlock *BB, BasicBlock::iterator &I);
-
-// ConstantFoldTerminator - If a terminator instruction is predicated on a
-// constant value, convert it into an unconditional branch to the constant
-// destination.  This is a nontrivial operation because the successors of this
-// basic block must have their PHI nodes updated.
-//
-bool ConstantFoldTerminator(BasicBlock *BB, BasicBlock::iterator &I,
-                            TerminatorInst *T);
-
-
 //===----------------------------------------------------------------------===//
 // Sparse Conditional Constant Propogation Pass
 //
diff --git a/include/llvm/Transforms/Scalar/DCE.h b/include/llvm/Transforms/Scalar/DCE.h
index 35b929d7e7b..34f927148df 100644
--- a/include/llvm/Transforms/Scalar/DCE.h
+++ b/include/llvm/Transforms/Scalar/DCE.h
@@ -1,15 +1,13 @@
-//===-- DCE.h - Functions that perform Dead Code Elimination -----*- C++ -*--=//
+//===-- DCE.h - Passes that perform Dead Code Elimination --------*- C++ -*--=//
 //
-// This family of functions is useful for performing dead code elimination of 
-// various sorts.
+// This family of passes is useful for performing dead code elimination of
+// various strengths.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_TRANSFORMS_SCALAR_DCE_H
 #define LLVM_TRANSFORMS_SCALAR_DCE_H
 
-#include "llvm/Function.h"
-#include "llvm/BasicBlock.h"
 class Pass;
 
 //===----------------------------------------------------------------------===//
@@ -33,15 +31,6 @@ Pass *createDeadInstEliminationPass();
 
 Pass *createDeadCodeEliminationPass();
 
-// dceInstruction - Inspect the instruction at *BBI and figure out if it's
-// [trivially] dead.  If so, remove the instruction and update the iterator
-// to point to the instruction that immediately succeeded the original
-// instruction.
-//
-bool dceInstruction(BasicBlock::InstListType &BBIL,
-                    BasicBlock::iterator &BBI);
-
-
 
 //===----------------------------------------------------------------------===//
 // AgressiveDCE - This pass uses the SSA based Agressive DCE algorithm.  This
@@ -50,16 +39,4 @@ bool dceInstruction(BasicBlock::InstListType &BBIL,
 //
 Pass *createAgressiveDCEPass();
 
-
-// SimplifyCFG - This function is used to do simplification of a CFG.  For
-// example, it adjusts branches to branches to eliminate the extra hop, it
-// eliminates unreachable basic blocks, and does other "peephole" optimization
-// of the CFG.  It returns true if a modification was made, and returns an 
-// iterator that designates the first element remaining after the block that
-// was deleted.
-//
-// WARNING:  The entry node of a method may not be simplified.
-//
-bool SimplifyCFG(Function::iterator &BBIt);
-
 #endif