From 2510436e20b761010cd2507cf3822cd36d4d799f Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Sun, 15 Feb 2009 08:36:12 +0000
Subject: Fix PR3522. It's not safe to sink into landing pad BB's.

llvm-svn: 64582
---
 llvm/lib/CodeGen/MachineSink.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'llvm/lib/CodeGen/MachineSink.cpp')

diff --git a/llvm/lib/CodeGen/MachineSink.cpp b/llvm/lib/CodeGen/MachineSink.cpp
index a85a41fbaee..468bd01548c 100644
--- a/llvm/lib/CodeGen/MachineSink.cpp
+++ b/llvm/lib/CodeGen/MachineSink.cpp
@@ -212,6 +212,11 @@ bool MachineSinking::SinkInstruction(MachineInstr *MI, bool &SawStore) {
   // If there are no outputs, it must have side-effects.
   if (SuccToSinkTo == 0)
     return false;
+
+  // It's not safe to sink instructions to EH landing pad. Control flow into
+  // landing pad is implicitly defined.
+  if (SuccToSinkTo->isLandingPad())
+    return false;
   
   DEBUG(cerr << "Sink instr " << *MI);
   DEBUG(cerr << "to block " << *SuccToSinkTo);
-- 
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