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| author | Tobias Grosser <grosser@fim.uni-passau.de> | 2010-10-13 05:54:13 +0000 |
|---|---|---|
| committer | Tobias Grosser <grosser@fim.uni-passau.de> | 2010-10-13 05:54:13 +0000 |
| commit | 592316c4198023431799f8e597860b31ea7116c9 (patch) | |
| tree | 49fe8a5db60f6ce262abe2c38d4bd045b7898fb8 /lib/Analysis/RegionInfo.cpp | |
| parent | c69bd733c02a4e0ca25f7a2d6b9b05168720d373 (diff) | |
| download | llvm-592316c4198023431799f8e597860b31ea7116c9.tar.gz llvm-592316c4198023431799f8e597860b31ea7116c9.tar.bz2 llvm-592316c4198023431799f8e597860b31ea7116c9.tar.xz | |
RegionInfo: Update RegionInfo after a BB was split.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116398 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/RegionInfo.cpp')
| -rw-r--r-- | lib/Analysis/RegionInfo.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/Analysis/RegionInfo.cpp b/lib/Analysis/RegionInfo.cpp index 2576d4ee14..4a0a9a3cce 100644 --- a/lib/Analysis/RegionInfo.cpp +++ b/lib/Analysis/RegionInfo.cpp @@ -807,6 +807,19 @@ RegionInfo::getCommonRegion(SmallVectorImpl<BasicBlock*> &BBs) const { 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) |