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()
return ret;
}
+void RegionInfo::splitBlock(BasicBlock* NewBB, BasicBlock *OldBB)
+{
+ Region *R = getRegionFor(OldBB);
+ setRegionFor(NewBB, R);
+
+ while (R->getEntry() == OldBB && R->getParent()) {
+ R->replaceEntry(NewBB);
+ R = R->getParent();
+ }
+
+ setRegionFor(OldBB, R);
+}
+
char RegionInfo::ID = 0;
INITIALIZE_PASS_BEGIN(RegionInfo, "regions",
"Detect single entry single exit regions", true, true)