forked from OSchip/llvm-project
0e894edee1
This is not a new semantic feature. The syntax `(? 1, 2, 3)` was disallowed by the parser in a dag //expression//, but there were already ways to sneak a `?` into the operator field of a dag //value//, e.g. by initializing it from a class template parameter which is then set to `?` by the instantiating `def`. This patch makes `?` in the operator slot syntactically legal, so it's now easy to construct dags with an unset operator. Also, the semantics of `!con` are relaxed so that it will allow a combination of set and unset operator fields in the dag nodes it's concatenating, with the restriction that all the operators that are //not// unset still have to agree with each other. Reviewers: hfinkel, nhaehnle Reviewed By: hfinkel, nhaehnle Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D71195 |
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| .. | ||
| CMakeLists.txt | ||
| Error.cpp | ||
| JSONBackend.cpp | ||
| LLVMBuild.txt | ||
| Main.cpp | ||
| Record.cpp | ||
| SetTheory.cpp | ||
| StringMatcher.cpp | ||
| TGLexer.cpp | ||
| TGLexer.h | ||
| TGParser.cpp | ||
| TGParser.h | ||
| TableGenBackend.cpp | ||