From: Evan Cheng <evan.cheng@apple.com>
Date: Thu, 22 Oct 2009 06:47:35 +0000 (+0000)
Subject: Load / store multiple was missing opportunites when the load / store bundles are... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=faf93aa23390389375b8e52f0dd1c3727ed07ee8;p=oota-llvm.git

Load / store multiple was missing opportunites when the load / store bundles are at the end of the bb. Test case is already in, the bug is exposed by subsequent commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84842 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index d2ec9ee6cdf..c9b9e84c2a3 100644
--- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -974,6 +974,9 @@ bool ARMLoadStoreOpt::LoadStoreMultipleOpti(MachineBasicBlock &MBB) {
     if (Advance) {
       ++Position;
       ++MBBI;
+      if (MBBI == E)
+        // Reach the end of the block, try merging the memory instructions.
+        TryMerge = true;
     } else
       TryMerge = true;