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Remove a check that can no longer be true, after r84803.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98694 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson 2010-03-16 23:40:32 +00:00
parent a43e6bf690
commit a1bdfc3c7f
1 changed files with 0 additions and 16 deletions
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lib/CodeGen/BranchFolding.cpp
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@ -1143,22 +1143,6 @@ ReoptimizeBlock:
!IsBetterFallthrough(PriorTBB, MBB)) !IsBetterFallthrough(PriorTBB, MBB))
DoTransform = false; DoTransform = false;
// We don't want to do this transformation if we have control flow like:
// br cond BB2
// BB1:
// ..
// jmp BBX
// BB2:
// ..
// ret
//
// In this case, we could actually be moving the return block *into* a
// loop!
if (DoTransform && !MBB->succ_empty() &&
(!PriorTBB->canFallThrough() || PriorTBB->empty()))
DoTransform = false;
if (DoTransform) { if (DoTransform) {
// Reverse the branch so we will fall through on the previous true cond. // Reverse the branch so we will fall through on the previous true cond.
SmallVector<MachineOperand, 4> NewPriorCond(PriorCond); SmallVector<MachineOperand, 4> NewPriorCond(PriorCond);