[PATCH] D47854: [LangRef] Clarify semantics of load metadata.
Juneyoung Lee via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Jun 8 19:22:36 PDT 2018
aqjune added inline comments.
================
Comment at: docs/LangRef.rst:7941
+program where the memory location is known to be dereferenceable;
+otherwise, the behavior is undefined.
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Hello, I have a minor question - is undefined behavior raised at the point when the load is executed? I wonder whether load with !invariant.load can be hoisted out of a loop (as in Nuno's example), even if the loaded value is actually not invariant.
Repository:
rL LLVM
https://reviews.llvm.org/D47854
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