diff options
Diffstat (limited to 'llvm/utils/TableGen/X86RecognizableInstr.cpp')
| -rw-r--r-- | llvm/utils/TableGen/X86RecognizableInstr.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/utils/TableGen/X86RecognizableInstr.cpp b/llvm/utils/TableGen/X86RecognizableInstr.cpp index 46f2052b010..76d986b1c1c 100644 --- a/llvm/utils/TableGen/X86RecognizableInstr.cpp +++ b/llvm/utils/TableGen/X86RecognizableInstr.cpp @@ -461,6 +461,12 @@ RecognizableInstr::filter_ret RecognizableInstr::filter() const { Name == "VMOVQs64rr") return FILTER_WEAK; + // XACQUIRE and XRELEASE reuse REPNE and REP respectively. + // For now, just prefer the REP versions. + if (Name == "XACQUIRE_PREFIX" || + Name == "XRELEASE_PREFIX") + return FILTER_WEAK; + if (HasFROperands && Name.find("MOV") != Name.npos && ((Name.find("2") != Name.npos && Name.find("32") == Name.npos) || (Name.find("to") != Name.npos))) |
