* Pull BasicBlock::pred_* and BasicBlock::succ_* out of BasicBlock.h and into
llvm/Support/CFG.h
* Make pred & succ iterators for intervals global functions
* Add #includes that are now neccesary because BasicBlock.h doesn't include
InstrTypes.h anymore
llvm-svn: 1750
diff --git a/llvm/lib/Transforms/Scalar/DCE.cpp b/llvm/lib/Transforms/Scalar/DCE.cpp
index 89cf45a..8f351a1 100644
--- a/llvm/lib/Transforms/Scalar/DCE.cpp
+++ b/llvm/lib/Transforms/Scalar/DCE.cpp
@@ -31,6 +31,7 @@
#include "llvm/iTerminators.h"
#include "llvm/iPHINode.h"
#include "llvm/Assembly/Writer.h"
+#include "llvm/Support/CFG.h"
#include "Support/STLExtras.h"
#include <algorithm>
@@ -73,15 +74,15 @@
// things in a basic block, if they are present.
//
static bool RemoveSingularPHIs(BasicBlock *BB) {
- BasicBlock::pred_iterator PI(BB->pred_begin());
- if (PI == BB->pred_end() || ++PI != BB->pred_end())
+ pred_iterator PI(pred_begin(BB));
+ if (PI == pred_end(BB) || ++PI != pred_end(BB))
return false; // More than one predecessor...
Instruction *I = BB->front();
if (!isa<PHINode>(I)) return false; // No PHI nodes
//cerr << "Killing PHIs from " << BB;
- //cerr << "Pred #0 = " << *BB->pred_begin();
+ //cerr << "Pred #0 = " << *pred_begin(BB);
//cerr << "Method == " << BB->getParent();
@@ -115,19 +116,19 @@
// Assumption: Succ is the single successor for BB.
//
static bool PropogatePredecessorsForPHIs(BasicBlock *BB, BasicBlock *Succ) {
- assert(*BB->succ_begin() == Succ && "Succ is not successor of BB!");
+ assert(*succ_begin(BB) == Succ && "Succ is not successor of BB!");
assert(isa<PHINode>(Succ->front()) && "Only works on PHId BBs!");
// If there is more than one predecessor, and there are PHI nodes in
// the successor, then we need to add incoming edges for the PHI nodes
//
- const std::vector<BasicBlock*> BBPreds(BB->pred_begin(), BB->pred_end());
+ const std::vector<BasicBlock*> BBPreds(pred_begin(BB), pred_end(BB));
// Check to see if one of the predecessors of BB is already a predecessor of
// Succ. If so, we cannot do the transformation!
//
- for (BasicBlock::pred_iterator PI = Succ->pred_begin(), PE = Succ->pred_end();
- PI != PE; ++PI) {
+ for (pred_iterator PI = pred_begin(Succ), PE = pred_end(Succ);
+ PI != PE; ++PI) {
if (find(BBPreds.begin(), BBPreds.end(), *PI) != BBPreds.end())
return true;
}
@@ -169,13 +170,13 @@
// Remove basic blocks that have no predecessors... which are unreachable.
- if (BB->pred_begin() == BB->pred_end() &&
+ if (pred_begin(BB) == pred_end(BB) &&
!BB->hasConstantReferences()) {
//cerr << "Removing BB: \n" << BB;
// Loop through all of our successors and make sure they know that one
// of their predecessors is going away.
- for_each(BB->succ_begin(), BB->succ_end(),
+ for_each(succ_begin(BB), succ_end(BB),
std::bind2nd(std::mem_fun(&BasicBlock::removePredecessor), BB));
while (!BB->empty()) {
@@ -196,10 +197,10 @@
// Check to see if this block has no instructions and only a single
// successor. If so, replace block references with successor.
- BasicBlock::succ_iterator SI(BB->succ_begin());
- if (SI != BB->succ_end() && ++SI == BB->succ_end()) { // One succ?
+ succ_iterator SI(succ_begin(BB));
+ if (SI != succ_end(BB) && ++SI == succ_end(BB)) { // One succ?
if (BB->front()->isTerminator()) { // Terminator is the only instruction!
- BasicBlock *Succ = *BB->succ_begin(); // There is exactly one successor
+ BasicBlock *Succ = *succ_begin(BB); // There is exactly one successor
//cerr << "Killing Trivial BB: \n" << BB;
if (Succ != BB) { // Arg, don't hurt infinite loops!
@@ -227,16 +228,16 @@
// Merge basic blocks into their predecessor if there is only one pred,
// and if there is only one successor of the predecessor.
- BasicBlock::pred_iterator PI(BB->pred_begin());
- if (PI != BB->pred_end() && *PI != BB && // Not empty? Not same BB?
- ++PI == BB->pred_end() && !BB->hasConstantReferences()) {
- BasicBlock *Pred = *BB->pred_begin();
+ pred_iterator PI(pred_begin(BB));
+ if (PI != pred_end(BB) && *PI != BB && // Not empty? Not same BB?
+ ++PI == pred_end(BB) && !BB->hasConstantReferences()) {
+ BasicBlock *Pred = *pred_begin(BB);
TerminatorInst *Term = Pred->getTerminator();
assert(Term != 0 && "malformed basic block without terminator!");
// Does the predecessor block only have a single successor?
- BasicBlock::succ_iterator SI(Pred->succ_begin());
- if (++SI == Pred->succ_end()) {
+ succ_iterator SI(succ_begin(Pred));
+ if (++SI == succ_end(Pred)) {
//cerr << "Merging: " << BB << "into: " << Pred;
// Delete the unconditianal branch from the predecessor...