FunctionLiveVarInfo.h moved: include/llvm/CodeGen -> lib/Target/Sparc/LiveVar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11804 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SparcV9/InstrSched/InstrScheduling.cpp b/lib/Target/SparcV9/InstrSched/InstrScheduling.cpp
index 4032432..4fad07e 100644
--- a/lib/Target/SparcV9/InstrSched/InstrScheduling.cpp
+++ b/lib/Target/SparcV9/InstrSched/InstrScheduling.cpp
@@ -16,7 +16,7 @@
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineCodeForInstruction.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/FunctionLiveVarInfo.h"
+#include "../../Target/Sparc/LiveVar/FunctionLiveVarInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/BasicBlock.h"
#include "Support/CommandLine.h"
diff --git a/lib/Target/SparcV9/InstrSched/SchedPriorities.cpp b/lib/Target/SparcV9/InstrSched/SchedPriorities.cpp
index b5bc38e..aab4434 100644
--- a/lib/Target/SparcV9/InstrSched/SchedPriorities.cpp
+++ b/lib/Target/SparcV9/InstrSched/SchedPriorities.cpp
@@ -18,7 +18,7 @@
//===----------------------------------------------------------------------===//
#include "SchedPriorities.h"
-#include "llvm/CodeGen/FunctionLiveVarInfo.h"
+#include "../../Target/Sparc/LiveVar/FunctionLiveVarInfo.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/Support/CFG.h"
#include "Support/PostOrderIterator.h"
diff --git a/lib/Target/SparcV9/LiveVar/BBLiveVar.cpp b/lib/Target/SparcV9/LiveVar/BBLiveVar.cpp
index e3515e8..9f9aaf5 100644
--- a/lib/Target/SparcV9/LiveVar/BBLiveVar.cpp
+++ b/lib/Target/SparcV9/LiveVar/BBLiveVar.cpp
@@ -12,7 +12,7 @@
//===----------------------------------------------------------------------===//
#include "BBLiveVar.h"
-#include "llvm/CodeGen/FunctionLiveVarInfo.h"
+#include "FunctionLiveVarInfo.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/Support/CFG.h"
diff --git a/lib/Target/SparcV9/LiveVar/FunctionLiveVarInfo.cpp b/lib/Target/SparcV9/LiveVar/FunctionLiveVarInfo.cpp
index e2822c3..9d54923 100644
--- a/lib/Target/SparcV9/LiveVar/FunctionLiveVarInfo.cpp
+++ b/lib/Target/SparcV9/LiveVar/FunctionLiveVarInfo.cpp
@@ -12,7 +12,7 @@
//
//===----------------------------------------------------------------------===//
-#include "llvm/CodeGen/FunctionLiveVarInfo.h"
+#include "FunctionLiveVarInfo.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/Target/TargetMachine.h"
diff --git a/lib/Target/SparcV9/LiveVar/FunctionLiveVarInfo.h b/lib/Target/SparcV9/LiveVar/FunctionLiveVarInfo.h
new file mode 100644
index 0000000..23a9d93
--- /dev/null
+++ b/lib/Target/SparcV9/LiveVar/FunctionLiveVarInfo.h
@@ -0,0 +1,111 @@
+//===-- CodeGen/FunctionLiveVarInfo.h - LiveVar Analysis --------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is the interface for live variable info of a function that is required
+// by any other part of the compiler
+//
+// After the analysis, getInSetOfBB or getOutSetofBB can be called to get
+// live var info of a BB.
+//
+// The live var set before an instruction can be obtained in 2 ways:
+//
+// 1. Use the method getLiveVarSetAfterInst(Instruction *) to get the LV Info
+// just after an instruction. (also exists getLiveVarSetBeforeInst(..))
+//
+// This function caluclates the LV info for a BB only once and caches that
+// info. If the cache does not contain the LV info of the instruction, it
+// calculates the LV info for the whole BB and caches them.
+//
+// Getting liveVar info this way uses more memory since, LV info should be
+// cached. However, if you need LV info of nearly all the instructions of a
+// BB, this is the best and simplest interfrace.
+//
+// 2. Use the OutSet and applyTranferFuncForInst(const Instruction *const Inst)
+// declared in LiveVarSet and traverse the instructions of a basic block in
+// reverse (using const_reverse_iterator in the BB class).
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef FUNCTION_LIVE_VAR_INFO_H
+#define FUNCTION_LIVE_VAR_INFO_H
+
+#include "Support/hash_map"
+#include "llvm/Pass.h"
+#include "llvm/CodeGen/ValueSet.h"
+
+namespace llvm {
+
+class BBLiveVar;
+class MachineInstr;
+
+class FunctionLiveVarInfo : public FunctionPass {
+ // Machine Instr to LiveVarSet Map for providing LVset BEFORE each inst
+ // These sets are owned by this map and will be freed in releaseMemory().
+ hash_map<const MachineInstr *, ValueSet *> MInst2LVSetBI;
+
+ // Machine Instr to LiveVarSet Map for providing LVset AFTER each inst.
+ // These sets are just pointers to sets in MInst2LVSetBI or BBLiveVar.
+ hash_map<const MachineInstr *, ValueSet *> MInst2LVSetAI;
+
+ hash_map<const BasicBlock*, BBLiveVar*> BBLiveVarInfo;
+
+ // Stored Function that the data is computed with respect to
+ const Function *M;
+
+ // --------- private methods -----------------------------------------
+
+ // constructs BBLiveVars and init Def and In sets
+ void constructBBs(const Function *F);
+
+ // do one backward pass over the CFG
+ bool doSingleBackwardPass(const Function *F, unsigned int iter);
+
+ // calculates live var sets for instructions in a BB
+ void calcLiveVarSetsForBB(const BasicBlock *BB);
+
+public:
+ // --------- Implement the FunctionPass interface ----------------------
+
+ // runOnFunction - Perform analysis, update internal data structures.
+ virtual bool runOnFunction(Function &F);
+
+ // releaseMemory - After LiveVariable analysis has been used, forget!
+ virtual void releaseMemory();
+
+ // getAnalysisUsage - Provide self!
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ }
+
+ // --------- Functions to access analysis results -------------------
+
+ // get OutSet of a BB
+ const ValueSet &getOutSetOfBB(const BasicBlock *BB) const;
+ ValueSet &getOutSetOfBB(const BasicBlock *BB) ;
+
+ // get InSet of a BB
+ const ValueSet &getInSetOfBB(const BasicBlock *BB) const;
+ ValueSet &getInSetOfBB(const BasicBlock *BB) ;
+
+ // gets the Live var set BEFORE an instruction.
+ // if BB is specified and the live var set has not yet been computed,
+ // it will be computed on demand.
+ const ValueSet &getLiveVarSetBeforeMInst(const MachineInstr *MI,
+ const BasicBlock *BB = 0);
+
+ // gets the Live var set AFTER an instruction
+ // if BB is specified and the live var set has not yet been computed,
+ // it will be computed on demand.
+ const ValueSet &getLiveVarSetAfterMInst(const MachineInstr *MI,
+ const BasicBlock *BB = 0);
+};
+
+} // End llvm namespace
+
+#endif
diff --git a/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp b/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp
index a33d5c9..7b22411 100644
--- a/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp
+++ b/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp
@@ -25,13 +25,13 @@
#include "PhyRegAlloc.h"
#include "RegAllocCommon.h"
#include "RegClass.h"
+#include "../LiveVar/FunctionLiveVarInfo.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/iOther.h"
#include "llvm/Module.h"
#include "llvm/Type.h"
#include "llvm/Analysis/LoopInfo.h"
-#include "llvm/CodeGen/FunctionLiveVarInfo.h"
#include "llvm/CodeGen/InstrSelection.h"
#include "llvm/CodeGen/MachineCodeForInstruction.h"
#include "llvm/CodeGen/MachineFunction.h"