Revert EH-specific checks in BranchFolding that were causing blow ups in compile time.

Differential Revision: https://reviews.llvm.org/D22839

llvm-svn: 276898

1 files changed, 0 insertions, 8 deletions

diff --git a/llvm/lib/CodeGen/BranchFolding.cpp b/llvm/lib/CodeGen/BranchFolding.cpp
index fa705761645..d2ffd214b28 100644
--- a/llvm/lib/CodeGen/BranchFolding.cpp
+++ b/llvm/lib/CodeGen/BranchFolding.cpp
@@ -1595,14 +1595,6 @@ ReoptimizeBlock:
       // removed, move this block to the end of the function.
       MachineBasicBlock *PrevTBB = nullptr, *PrevFBB = nullptr;
       SmallVector<MachineOperand, 4> PrevCond;
-      // We're looking for cases where PrevBB could possibly fall through to
-      // FallThrough, but if FallThrough is an EH pad that wouldn't be useful
-      // so here we skip over any EH pads so we might have a chance to find
-      // a branch target from PrevBB.
-      while (FallThrough != MF.end() && FallThrough->isEHPad())
-        ++FallThrough;
-      // Now check to see if the current block is sitting between PrevBB and
-      // a block to which it could fall through.
       if (FallThrough != MF.end() &&
           !TII->analyzeBranch(PrevBB, PrevTBB, PrevFBB, PrevCond, true) &&
           PrevBB.isSuccessor(&*FallThrough)) {