From: Chris Lattner <sabre@nondot.org>
Date: Fri, 5 Feb 2010 22:48:33 +0000 (+0000)
Subject: add note.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=faa75f6f6f2b37359a458fd9acd57c58ee26eea9;p=oota-llvm.git

add note.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95445 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86MCCodeEmitter.cpp b/lib/Target/X86/X86MCCodeEmitter.cpp
index ec0e444a30f..4d82d2b6375 100644
--- a/lib/Target/X86/X86MCCodeEmitter.cpp
+++ b/lib/Target/X86/X86MCCodeEmitter.cpp
@@ -293,6 +293,8 @@ static unsigned DetermineREXPrefix(const MCInst &MI, unsigned TSFlags,
     if (!MO.isReg()) continue;
     unsigned Reg = MO.getReg();
     if (!X86InstrInfo::isX86_64NonExtLowByteReg(Reg)) continue;
+    // FIXME: The caller of DetermineREXPrefix slaps this prefix onto anything
+    // that returns non-zero.
     REX |= 0x40;
     break;
   }