From dff594ed06581fd20578dbb19c9768e941a1182e Mon Sep 17 00:00:00 2001 From: Devang Patel Date: Wed, 17 Sep 2008 18:21:49 +0000 Subject: Do not hoist instruction above branch condition. The instruction may use branch condition. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56286 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Utils/SimplifyCFG.cpp | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) (limited to 'lib') diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp index efd1765..39163e4 100644 --- a/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/lib/Transforms/Utils/SimplifyCFG.cpp @@ -1046,15 +1046,8 @@ static bool SpeculativelyExecuteBB(BranchInst *BI, BasicBlock *BB1) { return false; } - // If we get here, we can hoist the instruction. Try to place it before the - // icmp instruction preceeding the conditional branch. - BasicBlock::iterator InsertPos = BI; - if (InsertPos != BIParent->begin()) - --InsertPos; - if (InsertPos == BrCond && !isa(BrCond)) - BIParent->getInstList().splice(InsertPos, BB1->getInstList(), I); - else - BIParent->getInstList().splice(BI, BB1->getInstList(), I); + // If we get here, we can hoist the instruction. + BIParent->getInstList().splice(BI, BB1->getInstList(), I); // Create a select whose true value is the speculatively executed value and // false value is the previously determined FalseV. -- cgit v1.1