From faa75f6f6f2b37359a458fd9acd57c58ee26eea9 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Fri, 5 Feb 2010 22:48:33 +0000 Subject: [PATCH] add note. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95445 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86MCCodeEmitter.cpp | 2 ++ 1 file changed, 2 insertions(+) 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; } -- 2.34.1