diff options
| author | Keegan McAllister <kmcallister@mozilla.com> | 2014-09-03 12:00:08 -0700 |
|---|---|---|
| committer | Keegan McAllister <kmcallister@mozilla.com> | 2014-10-04 20:09:09 -0700 |
| commit | 401aeaf6d3a6ec712ee46151faf574adaa5ff3c6 (patch) | |
| tree | d8f456d0fa5868f969d868ce0eaf7c62d9a327ef /src/libcore | |
| parent | 1f3cda8bd8496c3b3771b0201d1073ed575321d0 (diff) | |
| download | rust-401aeaf6d3a6ec712ee46151faf574adaa5ff3c6.tar.gz rust-401aeaf6d3a6ec712ee46151faf574adaa5ff3c6.zip | |
Add intrinsics::unreachable
Diffstat (limited to 'src/libcore')
| -rw-r--r-- | src/libcore/intrinsics.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/libcore/intrinsics.rs b/src/libcore/intrinsics.rs index a3d63bbe06c..7d86b65168f 100644 --- a/src/libcore/intrinsics.rs +++ b/src/libcore/intrinsics.rs @@ -250,6 +250,13 @@ extern "rust-intrinsic" { /// Abort the execution of the process. pub fn abort() -> !; + /// Tell LLVM that this point in the code is not reachable, + /// enabling further optimizations. + /// + /// NB: This is very different from the `unreachable!()` macro! + #[cfg(not(stage0))] + pub fn unreachable() -> !; + /// Execute a breakpoint trap, for inspection by a debugger. pub fn breakpoint(); |