[PATCH] D59467: [clang] Adding the Likely Attribute from C++2a to AST
Roman Lebedev via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Sun Mar 17 14:51:28 PDT 2019
lebedev.ri added a comment.
In D59467#1432675 <https://reviews.llvm.org/D59467#1432675>, @Tyker wrote:
> if likely/unlikely can be applied to any statement or label what should be generated when it is applied to a statement that don't have any conditional branch ? should it be ignored without warning or error ?
Disregard previous [deleted] comment from me.
Yes, i believe it should simply be always accepted, for any `isa<clang::Stmt>()`.
How to model that in codegen i'm not sure yet. Likely by affecting the nearest (up the AST) branch / switch / etc.
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