Changes in directory llvm/lib/Analysis:
LoopPass.cpp added (r1.1)
---
Log message:
Add Loop Pass Manager.
---
Diffs of the changes: (+69 -0)
LoopPass.cpp | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 69 insertions(+)
Index: llvm/lib/Analysis/LoopPass.cpp
diff -c /dev/null llvm/lib/Analysis/LoopPass.cpp:1.1
*** /dev/null Thu Feb 22 02:56:27 2007
--- llvm/lib/Analysis/LoopPass.cpp Thu Feb 22 02:56:17 2007
***************
*** 0 ****
--- 1,69 ----
+ //===- LoopPass.cpp - Loop Pass and Loop Pass Manager
---------------------===//
+ //
+ // The LLVM Compiler Infrastructure
+ //
+ // This file was developed by Devang Patel and is distributed under
+ // the University of Illinois Open Source License. See LICENSE.TXT for
details.
+ //
+
//===----------------------------------------------------------------------===//
+ //
+ // This file implements LoopPass and LPPassManager. All loop optimization
+ // and transformation passes are derived from LoopPass. LPPassManager is
+ // responsible for managing LoopPasses.
+ //
+
//===----------------------------------------------------------------------===//
+
+ #include "llvm/Analysis/LoopPass.h"
+ using namespace llvm;
+
+
//===----------------------------------------------------------------------===//
+ // LPPassManager
+ //
+ /// LPPassManager manages FPPassManagers and CalLGraphSCCPasses.
+
+ /// run - Execute all of the passes scheduled for execution. Keep track of
+ /// whether any of the passes modifies the function, and if so, return true.
+ bool LPPassManager::runOnFunction(Function &F) {
+ LoopInfo &LI = getAnalysis<LoopInfo>();
+ bool Changed = false;
+
+ std::string Msg1 = "Executing Pass '";
+ std::string Msg3 = "' Made Modification '";
+
+ // Walk Loops
+ for (LoopInfo::iterator I = LI.begin(), E = LI.end(); I != E; ++I) {
+
+ Loop *L = *I;
+ // Run all passes on current SCC
+ for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
+
+ Pass *P = getContainedPass(Index);
+ AnalysisUsage AnUsage;
+ P->getAnalysisUsage(AnUsage);
+
+ std::string Msg2 = "' on Loop ...\n'";
+ dumpPassInfo(P, Msg1, Msg2);
+ dumpAnalysisSetInfo("Required", P, AnUsage.getRequiredSet());
+
+ initializeAnalysisImpl(P);
+
+ StartPassTimer(P);
+ LoopPass *LP = dynamic_cast<LoopPass *>(P);
+ assert (LP && "Invalid LPPassManager member");
+ LP->runOnLoop(*L, *this);
+ StopPassTimer(P);
+
+ if (Changed)
+ dumpPassInfo(P, Msg3, Msg2);
+ dumpAnalysisSetInfo("Preserved", P, AnUsage.getPreservedSet());
+
+ removeNotPreservedAnalysis(P);
+ recordAvailableAnalysis(P);
+ removeDeadPasses(P, Msg2);
+ }
+ }
+
+ return Changed;
+ }
+
+
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