diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Target/Target.td | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td index 6e28f79694..9714172aa4 100644 --- a/include/llvm/Target/Target.td +++ b/include/llvm/Target/Target.td @@ -356,6 +356,15 @@ class Instruction { // associated with them. Once we've migrated all of them over to true // pseudo-instructions that are lowered to real instructions prior to // the printer/emitter, we can remove this attribute and just use isPseudo. + // + // The intended use is: + // isPseudo: Does not have encoding information and should be expanded, + // at the latest, during lowering to MCInst. + // + // isCodeGenOnly: Does have encoding information and can go through to the + // CodeEmitter unchanged, but duplicates a canonical instruction + // definition's encoding and should be ignored when constructing the + // assembler match tables. bit isCodeGenOnly = 0; // Is this instruction a pseudo instruction for use by the assembler parser. |