From 4e9b0e3587dd6e72589e13b3d0ebadb06cf72fb2 Mon Sep 17 00:00:00 2001 From: Jay Foad Date: Mon, 11 Apr 2011 09:25:51 +0000 Subject: [PATCH] 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 --- lib/VMCore/Instructions.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp index 33dfcc032af..61da9b6b8e0 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; -- 2.34.1