From 8dbd9ada3031641e4cc395c5f3806e11e7edaeb7 Mon Sep 17 00:00:00 2001 From: Devang Patel Date: Thu, 15 May 2008 18:04:29 +0000 Subject: [PATCH] Remove useless check. Patch by Matthijs Kooijman. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51154 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Scalar/TailDuplication.cpp | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/lib/Transforms/Scalar/TailDuplication.cpp b/lib/Transforms/Scalar/TailDuplication.cpp index c8493b6a5ff..8cb28a3b06c 100644 --- a/lib/Transforms/Scalar/TailDuplication.cpp +++ b/lib/Transforms/Scalar/TailDuplication.cpp @@ -109,13 +109,9 @@ bool TailDup::shouldEliminateUnconditionalBranch(TerminatorInst *TI) { if (!DTI->use_empty()) return false; - // Do not bother working on dead blocks... - pred_iterator PI = pred_begin(Dest), PE = pred_end(Dest); - if (PI == PE && Dest != Dest->getParent()->begin()) - return false; // It's just a dead block, ignore it... - - // Also, do not bother with blocks with only a single predecessor: simplify + // Do not bother with blocks with only a single predecessor: simplify // CFG will fold these two blocks together! + pred_iterator PI = pred_begin(Dest), PE = pred_end(Dest); ++PI; if (PI == PE) return false; // Exactly one predecessor!