[CodeGen] Split out the notions of MI invariance and MI dereferenceability.
Summary:
An IR load can be invariant, dereferenceable, neither, or both. But
currently, MI's notion of invariance is IR-invariant &&
IR-dereferenceable.
This patch splits up the notions of invariance and dereferenceability at
the MI level. It's NFC, so adds some probably-unnecessary
"is-dereferenceable" checks, which we can remove later if desired.
Reviewers: chandlerc, tstellarAMD
Subscribers: jholewinski, arsenm, nemanjai, llvm-commits
Differential Revision: https://reviews.llvm.org/D23371
llvm-svn: 281151
diff --git a/llvm/lib/CodeGen/MIRParser/MILexer.h b/llvm/lib/CodeGen/MIRParser/MILexer.h
index c0d9561..6911700 100644
--- a/llvm/lib/CodeGen/MIRParser/MILexer.h
+++ b/llvm/lib/CodeGen/MIRParser/MILexer.h
@@ -54,6 +54,7 @@
kw_implicit_define,
kw_def,
kw_dead,
+ kw_dereferenceable,
kw_killed,
kw_undef,
kw_internal,
@@ -166,7 +167,7 @@
bool isMemoryOperandFlag() const {
return Kind == kw_volatile || Kind == kw_non_temporal ||
- Kind == kw_invariant;
+ Kind == kw_dereferenceable || Kind == kw_invariant;
}
bool is(TokenKind K) const { return Kind == K; }