Fix the x86 disassembler to at least print the lock prefix if it is the first
prefix. Added a FIXME to remind us this still does not work when it is not the
first prefix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152414 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/X86RecognizableInstr.cpp b/utils/TableGen/X86RecognizableInstr.cpp
index 5bf473d..6bbc929 100644
--- a/utils/TableGen/X86RecognizableInstr.cpp
+++ b/utils/TableGen/X86RecognizableInstr.cpp
@@ -405,13 +405,13 @@
return FILTER_STRONG;
- // Filter out artificial instructions
+ // Filter out artificial instructions but leave in the LOCK_PREFIX so it is
+ // printed as a separate "instruction".
if (Name.find("_Int") != Name.npos ||
Name.find("Int_") != Name.npos ||
Name.find("_NOREX") != Name.npos ||
- Name.find("2SDL") != Name.npos ||
- Name == "LOCK_PREFIX")
+ Name.find("2SDL") != Name.npos)
return FILTER_STRONG;
// Filter out instructions with segment override prefixes.