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| author | Jay Foad <jay.foad@gmail.com> | 2011-04-11 09:25:51 +0000 |
|---|---|---|
| committer | Jay Foad <jay.foad@gmail.com> | 2011-04-11 09:25:51 +0000 |
| commit | 4e9b0e3587dd6e72589e13b3d0ebadb06cf72fb2 (patch) | |
| tree | 77c4212af0759d4f257a11a70f39cf3037369481 /lib/VMCore | |
| parent | ee69926b10b5b311c5b7cfd0c477569ad18d005c (diff) | |
Phi nodes always use an even number of operands, so don't ever allocate
an odd number.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129270 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore')
| -rw-r--r-- | lib/VMCore/Instructions.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp index 33dfcc032a..61da9b6b8e 100644 --- a/lib/VMCore/Instructions.cpp +++ b/lib/VMCore/Instructions.cpp @@ -137,7 +137,8 @@ Value *PHINode::removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty) { /// void PHINode::growOperands() { unsigned e = getNumOperands(); - unsigned NumOps = e*3/2; + // Multiply by 1.5 and round down so the result is still even. + unsigned NumOps = e + e / 4 * 2; if (NumOps < 4) NumOps = 4; // 4 op PHI nodes are VERY common. ReservedSpace = NumOps; |