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Change over to use new style pass mechanism, now passes only expose small

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creation functions in their public header file, unless they can help it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1816 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-02-26 21:46:54 +00:00
parent 3b2541424f
commit bd0ef77cde
32 changed files with 528 additions and 512 deletions
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30
lib/Transforms/Scalar/ConstantProp.cpp
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@ -29,6 +29,7 @@
#include "llvm/iTerminators.h"
#include "llvm/iPHINode.h"
#include "llvm/iOther.h"
#include "llvm/Pass.h"
#include "llvm/ConstantVals.h"
inline static bool
@ -153,8 +154,7 @@ bool ConstantFoldTerminator(TerminatorInst *T) {
// ConstantFoldInstruction - If an instruction references constants, try to fold
// them together...
//
bool ConstantPropogation::doConstantPropogation(BasicBlock *BB,
BasicBlock::iterator &II) {
bool doConstantPropogation(BasicBlock *BB, BasicBlock::iterator &II) {
Instruction *Inst = *II;
if (isa<BinaryOperator>(Inst)) {
Constant *D1 = dyn_cast<Constant>(Inst->getOperand(0));
@ -200,7 +200,7 @@ static bool DoConstPropPass(Method *M) {
for (Method::iterator BBI = M->begin(); BBI != M->end(); ++BBI) {
BasicBlock *BB = *BBI;
for (BasicBlock::iterator I = BB->begin(); I != BB->end(); )
if (ConstantPropogation::doConstantPropogation(BB, I))
if (doConstantPropogation(BB, I))
SomethingChanged = true;
else
++I;
@ -208,14 +208,20 @@ static bool DoConstPropPass(Method *M) {
return SomethingChanged;
}
namespace {
struct ConstantPropogation : public MethodPass {
inline bool runOnMethod(Method *M) {
bool Modified = false;
// returns whether or not the underlying method was modified
//
bool ConstantPropogation::doConstantPropogation(Method *M) {
bool Modified = false;
// Fold constants until we make no progress...
while (DoConstPropPass(M)) Modified = true;
return Modified;
// Fold constants until we make no progress...
while (DoConstPropPass(M)) Modified = true;
return Modified;
}
};
}
Pass *createConstantPropogationPass() {
return new ConstantPropogation();
}