diff options
Diffstat (limited to 'contrib/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp')
| -rw-r--r-- | contrib/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/contrib/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp b/contrib/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp index ee23268..930980f 100644 --- a/contrib/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp +++ b/contrib/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp @@ -624,11 +624,10 @@ bool LoopUnswitch::IsTrivialUnswitchCondition(Value *Cond, Constant **Val, /// LoopCond == Val to simplify the loop. If we decide that this is profitable, /// unswitch the loop, reprocess the pieces, then return true. bool LoopUnswitch::UnswitchIfProfitable(Value *LoopCond, Constant *Val) { - Function *F = loopHeader->getParent(); - Constant *CondVal = 0; BasicBlock *ExitBlock = 0; + if (IsTrivialUnswitchCondition(LoopCond, &CondVal, &ExitBlock)) { // If the condition is trivial, always unswitch. There is no code growth // for this case. @@ -688,8 +687,8 @@ void LoopUnswitch::EmitPreheaderBranchOnCondition(Value *LIC, Constant *Val, // If either edge is critical, split it. This helps preserve LoopSimplify // form for enclosing loops. - SplitCriticalEdge(BI, 0, this); - SplitCriticalEdge(BI, 1, this); + SplitCriticalEdge(BI, 0, this, false, false, true); + SplitCriticalEdge(BI, 1, this, false, false, true); } /// UnswitchTrivialCondition - Given a loop that has a trivial unswitchable |
