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| author | dim <dim@FreeBSD.org> | 2011-02-20 12:57:14 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2011-02-20 12:57:14 +0000 |
| commit | cbb70ce070d220642b038ea101d9c0f9fbf860d6 (patch) | |
| tree | d2b61ce94e654cb01a254d2195259db5f9cc3f3c /include/llvm/Analysis/RegionInfo.h | |
| parent | 4ace901e87dac5bbbac78ed325e75462e48e386e (diff) | |
| download | FreeBSD-src-cbb70ce070d220642b038ea101d9c0f9fbf860d6.zip FreeBSD-src-cbb70ce070d220642b038ea101d9c0f9fbf860d6.tar.gz | |
Vendor import of llvm trunk r126079:
http://llvm.org/svn/llvm-project/llvm/trunk@126079
Diffstat (limited to 'include/llvm/Analysis/RegionInfo.h')
| -rw-r--r-- | include/llvm/Analysis/RegionInfo.h | 57 |
1 files changed, 55 insertions, 2 deletions
diff --git a/include/llvm/Analysis/RegionInfo.h b/include/llvm/Analysis/RegionInfo.h index 7a2670f..a36ca11 100644 --- a/include/llvm/Analysis/RegionInfo.h +++ b/include/llvm/Analysis/RegionInfo.h @@ -58,6 +58,7 @@ class RegionNode { // DO NOT IMPLEMENT const RegionNode &operator=(const RegionNode &); +protected: /// This is the entry basic block that starts this region node. If this is a /// BasicBlock RegionNode, then entry is just the basic block, that this /// RegionNode represents. Otherwise it is the entry of this (Sub)RegionNode. @@ -70,7 +71,6 @@ class RegionNode { /// RegionNode. PointerIntPair<BasicBlock*, 1, bool> entry; -protected: /// @brief The parent Region of this RegionNode. /// @see getParent() Region* parent; @@ -257,6 +257,18 @@ public: /// @return The entry BasicBlock of the region. BasicBlock *getEntry() const { return RegionNode::getEntry(); } + /// @brief Replace the entry basic block of the region with the new basic + /// block. + /// + /// @param BB The new entry basic block of the region. + void replaceEntry(BasicBlock *BB); + + /// @brief Replace the exit basic block of the region with the new basic + /// block. + /// + /// @param BB The new exit basic block of the region. + void replaceExit(BasicBlock *BB); + /// @brief Get the exit BasicBlock of the Region. /// @return The exit BasicBlock of the Region, NULL if this is the TopLevel /// Region. @@ -280,6 +292,33 @@ public: /// @return The depth of the region. unsigned getDepth() const; + /// @brief Check if a Region is the TopLevel region. + /// + /// The toplevel region represents the whole function. + bool isTopLevelRegion() const { return exit == NULL; } + + /// @brief Return a new (non canonical) region, that is obtained by joining + /// this region with its predecessors. + /// + /// @return A region also starting at getEntry(), but reaching to the next + /// basic block that forms with getEntry() a (non canonical) region. + /// NULL if such a basic block does not exist. + Region *getExpandedRegion() const; + + /// @brief Return the first block of this region's single entry edge, + /// if existing. + /// + /// @return The BasicBlock starting this region's single entry edge, + /// else NULL. + BasicBlock *getEnteringBlock() const; + + /// @brief Return the first block of this region's single exit edge, + /// if existing. + /// + /// @return The BasicBlock starting this region's single exit edge, + /// else NULL. + BasicBlock *getExitingBlock() const; + /// @brief Is this a simple region? /// /// A region is simple if it has exactly one exit and one entry edge. @@ -386,7 +425,9 @@ public: /// @brief Add a new subregion to this Region. /// /// @param SubRegion The new subregion that will be added. - void addSubRegion(Region *SubRegion); + /// @param moveChildren Move the children of this region, that are also + /// contained in SubRegion into SubRegion. + void addSubRegion(Region *SubRegion, bool moveChildren = false); /// @brief Remove a subregion from this Region. /// @@ -565,6 +606,12 @@ public: /// region containing BB. Region *getRegionFor(BasicBlock *BB) const; + /// @brief Set the smallest region that surrounds a basic block. + /// + /// @param BB The basic block surrounded by a region. + /// @param R The smallest region that surrounds BB. + void setRegionFor(BasicBlock *BB, Region *R); + /// @brief A shortcut for getRegionFor(). /// /// @param BB The basic block. @@ -610,6 +657,12 @@ public: return TopLevelRegion; } + /// @brief Update RegionInfo after a basic block was split. + /// + /// @param NewBB The basic block that was created before OldBB. + /// @param OldBB The old basic block. + void splitBlock(BasicBlock* NewBB, BasicBlock *OldBB); + /// @brief Clear the Node Cache for all Regions. /// /// @see Region::clearNodeCache() |
