From a1bdfc3c7fcd7bf8e42c6e4805bfb694230c7a55 Mon Sep 17 00:00:00 2001 From: Bob Wilson Date: Tue, 16 Mar 2010 23:40:32 +0000 Subject: [PATCH] Remove a check that can no longer be true, after r84803. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98694 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/BranchFolding.cpp | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp index 13ae43daf6d..b45abc7b97d 100644 --- a/lib/CodeGen/BranchFolding.cpp +++ b/lib/CodeGen/BranchFolding.cpp @@ -1143,22 +1143,6 @@ ReoptimizeBlock: !IsBetterFallthrough(PriorTBB, MBB)) 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) { // Reverse the branch so we will fall through on the previous true cond. SmallVector NewPriorCond(PriorCond); -- 2.34.1