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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-04 00:05:28 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-04 00:05:28 +0000 |
| commit | 736a0118b5384daa52b82dfb398ad980afdb7bb4 (patch) | |
| tree | 9c025f08e3bb53b9f328f50293b9a50394d6b355 /lib | |
| parent | b272332e6120413b13dcaef7a5415783a99df073 (diff) | |
| download | external_llvm-736a0118b5384daa52b82dfb398ad980afdb7bb4.zip external_llvm-736a0118b5384daa52b82dfb398ad980afdb7bb4.tar.gz external_llvm-736a0118b5384daa52b82dfb398ad980afdb7bb4.tar.bz2 | |
Fix PR10244.
A split point inserted in a block with a landing pad successor may be
hoisted above the call to ensure that it dominates all successors. The
code that handles the rest of the basic block must take this into
account.
I am not including a test case, it would be very fragile. PR10244 comes
from building clang with exceptions enabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134369 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/RegAllocGreedy.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp index 4402694..acf7f95 100644 --- a/lib/CodeGen/RegAllocGreedy.cpp +++ b/lib/CodeGen/RegAllocGreedy.cpp @@ -812,9 +812,9 @@ void RAGreedy::splitAroundRegion(LiveInterval &VirtReg, tie(Start, Stop) = Indexes->getMBBRange(BI.MBB); Intf.moveToBlock(BI.MBB->getNumber()); DEBUG(dbgs() << "EB#" << Bundles->getBundle(BI.MBB->getNumber(), 0) - << (RegIn ? " => " : " -- ") + << (BI.LiveIn ? (RegIn ? " => " : " -> ") : " ") << "BB#" << BI.MBB->getNumber() - << (RegOut ? " => " : " -- ") + << (BI.LiveOut ? (RegOut ? " => " : " -> ") : " ") << " EB#" << Bundles->getBundle(BI.MBB->getNumber(), 1) << " [" << Start << ';' << SA->getLastSplitPoint(BI.MBB->getNumber()) << '-' << Stop @@ -1062,7 +1062,7 @@ void RAGreedy::splitAroundRegion(LiveInterval &VirtReg, // |---o-- Live-in in MainIntv. // ====--- Switch to LocalIntv before interference. // - SlotIndex Switch = SE->enterIntvBefore(Intf.first()); + SlotIndex Switch = SE->enterIntvBefore(std::min(Pos, Intf.first())); assert(Switch <= Intf.first() && "Expected to avoid interference"); SE->useIntv(Switch, Pos); SE->selectIntv(MainIntv); @@ -1080,7 +1080,7 @@ void RAGreedy::splitAroundRegion(LiveInterval &VirtReg, // | o-- Defined in block. // --- Begin LocalIntv at first use. // - SlotIndex Switch = SE->enterIntvBefore(BI.FirstUse); + SlotIndex Switch = SE->enterIntvBefore(std::min(Pos, BI.FirstUse)); SE->useIntv(Switch, Pos); } } |