Displaying 1 result from an estimated 1 matches for "7cf35b2f".
2015 Nov 02
8
[RFC] A new intrinsic, `llvm.blackbox`, to explicitly prevent constprop, die, etc optimizations
Hey all,
I'd like to propose a new intrinsic for use in preventing optimizations
from deleting IR due to constant propagation, dead code elimination, etc.
# Background/Motivation
In Rust we have a crate called `test` which provides a function,
`black_box`, which is designed to be a no-op function that prevents
constprop, die, etc from interfering with tests/benchmarks but otherwise