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| author | David Majnemer <david.majnemer@gmail.com> | 2015-11-11 21:57:16 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2015-11-11 21:57:16 +0000 |
| commit | 83fc12aeed03b6423fdf973ad4ae351202fe0982 (patch) | |
| tree | b3120aadad30d5a7736a5742c2030504892ee241 /lib/AsmParser/LLLexer.cpp | |
| parent | ab31dd0adda16c16cccfb21a0bc3ad590a4fe75c (diff) | |
[IR] Add support for empty tokens
When working with tokens, it is often the case that one has instructions
which consume a token and produce a new token. Currently, we have no
mechanism to represent an initial token state.
Instead, we can create a notional "empty token" by inventing a new
constant which captures the semantics we would like. This new constant
is called ConstantTokenNone and is written textually as "token none".
Differential Revision: http://reviews.llvm.org/D14581
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252811 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AsmParser/LLLexer.cpp')
| -rw-r--r-- | lib/AsmParser/LLLexer.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/AsmParser/LLLexer.cpp b/lib/AsmParser/LLLexer.cpp index 91ce1fd7669..372c5658886 100644 --- a/lib/AsmParser/LLLexer.cpp +++ b/lib/AsmParser/LLLexer.cpp @@ -523,6 +523,7 @@ lltok::Kind LLLexer::LexIdentifier() { KEYWORD(zeroinitializer); KEYWORD(undef); KEYWORD(null); + KEYWORD(none); KEYWORD(to); KEYWORD(caller); KEYWORD(tail); |