From d6de2a76127837d1eef55574563347ea8c0210a9 Mon Sep 17 00:00:00 2001
From: "Duncan P. N. Exon Smith" <dexonsmith@apple.com>
Date: Mon, 22 Feb 2016 02:32:35 +0000
Subject: Document assumption in X86FrameLowering::inlineStackProbe()

Resolve FIXME from r261504.  Apparently bundled instructions are illegal
here:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20160215/334146.html

llvm-svn: 261507
---
 llvm/lib/Target/X86/X86FrameLowering.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'llvm/lib/Target/X86/X86FrameLowering.cpp')

diff --git a/llvm/lib/Target/X86/X86FrameLowering.cpp b/llvm/lib/Target/X86/X86FrameLowering.cpp
index 1856ee1820e..db802c3a7e3 100644
--- a/llvm/lib/Target/X86/X86FrameLowering.cpp
+++ b/llvm/lib/Target/X86/X86FrameLowering.cpp
@@ -462,7 +462,8 @@ void X86FrameLowering::inlineStackProbe(MachineFunction &MF,
   }
 
   if (ChkStkStub != nullptr) {
-    // FIXME: MBBI is a bundle iterator.  Should this be getBundleIterator()?
+    assert(!ChkStkStub->isBundled() &&
+           "Not expecting bundled instructions here");
     MachineBasicBlock::iterator MBBI =
         std::next(ChkStkStub->getInstrIterator());
     assert(std::prev(MBBI).operator==(ChkStkStub) &&
-- 
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