Changes in directory llvm/lib/Transforms/Scalar:
LoopStrengthReduce.cpp updated: 1.114 -> 1.115
---
Log message:
Now LoopStrengthReduce is a LoopPass.
---
Diffs of the changes: (+14 -23)
LoopStrengthReduce.cpp | 37 ++++++++++++++-----------------------
1 files changed, 14 insertions(+), 23 deletions(-)
Index: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
diff -u llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.114
llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.115
--- llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.114 Fri Mar 2
17:51:25 2007
+++ llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp Tue Mar 6 15:14:09 2007
@@ -23,6 +23,7 @@
#include "llvm/DerivedTypes.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/Analysis/LoopInfo.h"
+#include "llvm/Analysis/LoopPass.h"
#include "llvm/Analysis/ScalarEvolutionExpander.h"
#include "llvm/Support/CFG.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
@@ -104,7 +105,7 @@
}
};
- class VISIBILITY_HIDDEN LoopStrengthReduce : public FunctionPass {
+ class VISIBILITY_HIDDEN LoopStrengthReduce : public LoopPass {
LoopInfo *LI;
ETForest *EF;
ScalarEvolution *SE;
@@ -143,19 +144,7 @@
: TLI(tli) {
}
- virtual bool runOnFunction(Function &) {
- LI = &getAnalysis<LoopInfo>();
- EF = &getAnalysis<ETForest>();
- SE = &getAnalysis<ScalarEvolution>();
- TD = &getAnalysis<TargetData>();
- UIntPtrTy = TD->getIntPtrType();
- Changed = false;
-
- for (LoopInfo::iterator I = LI->begin(), E = LI->end(); I != E; ++I)
- runOnLoop(*I);
-
- return Changed;
- }
+ bool runOnLoop(Loop *L, LPPassManager &LPM);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
// We split critical edges, so we change the CFG. However, we do update
@@ -179,7 +168,6 @@
///
Value *getCastedVersionOf(Instruction::CastOps opcode, Value *V);
private:
- void runOnLoop(Loop *L);
bool AddUsersIfInteresting(Instruction *I, Loop *L,
std::set<Instruction*> &Processed);
SCEVHandle GetExpressionSCEV(Instruction *E, Loop *L);
@@ -196,7 +184,7 @@
RegisterPass<LoopStrengthReduce> X("loop-reduce", "Loop Strength Reduction");
}
-FunctionPass *llvm::createLoopStrengthReducePass(const TargetLowering *TLI) {
+LoopPass *llvm::createLoopStrengthReducePass(const TargetLowering *TLI) {
return new LoopStrengthReduce(TLI);
}
@@ -1271,12 +1259,15 @@
};
}
-void LoopStrengthReduce::runOnLoop(Loop *L) {
- // First step, transform all loops nesting inside of this loop.
- for (LoopInfo::iterator I = L->begin(), E = L->end(); I != E; ++I)
- runOnLoop(*I);
+bool LoopStrengthReduce::runOnLoop(Loop *L, LPPassManager &LPM) {
- // Next, find all uses of induction variables in this loop, and catagorize
+ LI = &getAnalysis<LoopInfo>();
+ EF = &getAnalysis<ETForest>();
+ SE = &getAnalysis<ScalarEvolution>();
+ TD = &getAnalysis<TargetData>();
+ UIntPtrTy = TD->getIntPtrType();
+
+ // Find all uses of induction variables in this loop, and catagorize
// them by stride. Start by finding all of the PHI nodes in the header for
// this loop. If they are induction variables, inspect their uses.
std::set<Instruction*> Processed; // Don't reprocess instructions.
@@ -1284,7 +1275,7 @@
AddUsersIfInteresting(I, L, Processed);
// If we have nothing to do, return.
- if (IVUsesByStride.empty()) return;
+ if (IVUsesByStride.empty()) return false;
// Optimize induction variables. Some indvar uses can be transformed to use
// strides that will be needed for other purposes. A common example of this
@@ -1368,5 +1359,5 @@
CastedPointers.clear();
IVUsesByStride.clear();
StrideOrder.clear();
- return;
+ return false;
}
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