diff options
Diffstat (limited to 'llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp index 6786d69f9fe..fa079242e75 100644 --- a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp +++ b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp @@ -3013,6 +3013,23 @@ unsigned X86AsmParser::checkTargetMatchPredicate(MCInst &Inst) { (MCID.TSFlags & X86II::EncodingMask) != X86II::VEX) return Match_Unsupported; + // These instructions match ambiguously with their VEX encoded counterparts + // and appear first in the matching table. Reject them unless we're forcing + // EVEX encoding. + // FIXME: We really need a way to break the ambiguity. + switch (Opc) { + case X86::VCVTSD2SIZrm_Int: + case X86::VCVTSD2SI64Zrm_Int: + case X86::VCVTSS2SIZrm_Int: + case X86::VCVTSS2SI64Zrm_Int: + case X86::VCVTTSD2SIZrm: case X86::VCVTTSD2SIZrm_Int: + case X86::VCVTTSD2SI64Zrm: case X86::VCVTTSD2SI64Zrm_Int: + case X86::VCVTTSS2SIZrm: case X86::VCVTTSS2SIZrm_Int: + case X86::VCVTTSS2SI64Zrm: case X86::VCVTTSS2SI64Zrm_Int: + if (ForcedVEXEncoding != VEXEncoding_EVEX) + return Match_Unsupported; + } + return Match_Success; } |
