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RegionInfo: Allow to update exit and entry of a region.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116396 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tobias Grosser 2010-10-13 05:54:10 +00:00
parent 9649390e1f
commit 4bcc0228dc
2 changed files with 21 additions and 0 deletions
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12
include/llvm/Analysis/RegionInfo.h
View File

@ -257,6 +257,18 @@ public:
/// @return The entry BasicBlock of the region. /// @return The entry BasicBlock of the region.
BasicBlock *getEntry() const { return RegionNode::getEntry(); } 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. /// @brief Get the exit BasicBlock of the Region.
/// @return The exit BasicBlock of the Region, NULL if this is the TopLevel /// @return The exit BasicBlock of the Region, NULL if this is the TopLevel
/// Region. /// Region.

9
lib/Analysis/RegionInfo.cpp
View File

@ -72,6 +72,15 @@ Region::~Region() {
delete *I; delete *I;
} }
void Region::replaceEntry(BasicBlock *BB) {
entry.setPointer(BB);
}
void Region::replaceExit(BasicBlock *BB) {
assert(exit && "No exit to replace!");
exit = BB;
}
bool Region::contains(const BasicBlock *B) const { bool Region::contains(const BasicBlock *B) const {
BasicBlock *BB = const_cast<BasicBlock*>(B); BasicBlock *BB = const_cast<BasicBlock*>(B);