Dereference loopHeader after checking for null rather than before.

llvm-svn: 90990
2009-12-09 22:55:01 +00:00 · 2009-12-09 22:55:01 +00:00 · 72c367fb52
parent 2262909b20
commit 72c367fb52
1 changed files with 2 additions and 1 deletions
--- a/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp
@ -404,12 +404,13 @@ bool LoopUnswitch::IsTrivialUnswitchCondition(Value *Cond, Constant **Val,
 bool LoopUnswitch::UnswitchIfProfitable(Value *LoopCond, Constant *Val){

  initLoopData();
-  Function *F = loopHeader->getParent();

  // If LoopSimplify was unable to form a preheader, don't do any unswitching.
  if (!loopPreheader)
    return false;

+  Function *F = loopHeader->getParent();
+
  // If the condition is trivial, always unswitch.  There is no code growth for
  // this case.
  if (!IsTrivialUnswitchCondition(LoopCond)) {