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[X86] Recognize "flags" as an identifier, not a register in Intel-syntax inline asm

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Patch by: marina.yatsina@intel.com
Differential Revision: http://reviews.llvm.org/D11512


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243630 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Kuperstein 2015-07-30 10:10:25 +00:00
parent d8c145fd49
commit 78a589c319
1 changed files with 5 additions and 0 deletions
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5
lib/Target/X86/AsmParser/X86AsmParser.cpp
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@ -912,6 +912,11 @@ bool X86AsmParser::ParseRegister(unsigned &RegNo,
if (RegNo == 0)
RegNo = MatchRegisterName(Tok.getString().lower());
// The "flags" register cannot be referenced directly.
// Treat it as an identifier instead.
if (isParsingInlineAsm() && isParsingIntelSyntax() && RegNo == X86::EFLAGS)
RegNo = 0;
if (!is64BitMode()) {
// FIXME: This should be done using Requires<Not64BitMode> and
// Requires<In64BitMode> so "eiz" usage in 64-bit instructions can be also