[PATCH] D92162: [LangRef] Add poison constant
Nikita Popov via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Nov 26 11:35:03 PST 2020
nikic accepted this revision.
nikic added a comment.
This revision is now accepted and ready to land.
LGTM
================
Comment at: llvm/docs/LangRef.rst:3660
+A poison value is a result of an erroneous operation.
In order to facilitate speculative execution, many instructions do not
----------------
Would personally drop this sentence, seems pretty vague.
================
Comment at: llvm/docs/LangRef.rst:3735
%poison = sub nuw i32 0, 1 ; Results in a poison value.
+ %poison2 = sub i32 poison, 1 ; Also results in a poison value.
%still_poison = and i32 %poison, 0 ; 0, but also poison.
----------------
%poison2 is already used below.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D92162/new/
https://reviews.llvm.org/D92162
More information about the llvm-commits
mailing list