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author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-02-04 00:39:20 +0000 |
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committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-02-04 00:39:20 +0000 |
commit | 45139874a776f4fad581fc3ef81ab77b34b4f593 (patch) | |
tree | 4b1de2bc7b6617360d85743154900ba08f0faeca /lib/CodeGen | |
parent | a7b586ba7410dd2dddbfa82a6a57485985747f2c (diff) | |
download | external_llvm-45139874a776f4fad581fc3ef81ab77b34b4f593.zip external_llvm-45139874a776f4fad581fc3ef81ab77b34b4f593.tar.gz external_llvm-45139874a776f4fad581fc3ef81ab77b34b4f593.tar.bz2 |
Also compute interference intervals for blocks with no uses.
When the live range is live through a block that doesn't use the register, but
that has interference, region splitting wants to split at the top and bottom of
the basic block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124839 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
-rw-r--r-- | lib/CodeGen/RegAllocGreedy.cpp | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp index 92f97d0..2c772a2 100644 --- a/lib/CodeGen/RegAllocGreedy.cpp +++ b/lib/CodeGen/RegAllocGreedy.cpp @@ -611,9 +611,7 @@ void RAGreedy::splitAroundRegion(LiveInterval &VirtReg, unsigned PhysReg, if (!IntI.valid()) continue; for (unsigned i = 0, e = LiveBlocks.size(); i != e; ++i) { - BlockInfo &BI = LiveBlocks[i]; - if (!BI.Uses) - continue; + const BlockInfo &BI = LiveBlocks[i]; IndexPair &IP = InterferenceRanges[i]; SlotIndex Start, Stop; tie(Start, Stop) = Indexes->getMBBRange(BI.MBB); |