From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Mon, 15 Oct 2012 18:21:07 +0000 (+0000)
Subject: Make sure we iterate over newly created instructions. Fixes pr13625. Testcase to
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=10ad98bbbb00d67d4272e8f29186a65e2a75215e;p=oota-llvm.git

Make sure we iterate over newly created instructions. Fixes pr13625. Testcase to
follow in one sec.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165951 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/PeepholeOptimizer.cpp b/lib/CodeGen/PeepholeOptimizer.cpp
index 9099862bd31..a795ac8448f 100644
--- a/lib/CodeGen/PeepholeOptimizer.cpp
+++ b/lib/CodeGen/PeepholeOptimizer.cpp
@@ -527,6 +527,11 @@ bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) {
         SeenMoveImm = true;
       } else {
         Changed |= optimizeExtInstr(MI, MBB, LocalMIs);
+        // optimizeExtInstr might have created new instructions after MI
+        // and before the already incremented MII. Adjust MII so that the
+        // next iteration sees the new instructions.
+        MII = MI;
+        ++MII;
         if (SeenMoveImm)
           Changed |= foldImmediate(MI, MBB, ImmDefRegs, ImmDefMIs);
       }