rust - https://github.com/rust-lang/rust

Age	Commit message (Collapse)	Author	Lines
2015-06-25	msvc: Implement runtime support for unwinding	Alex Crichton	-9/+122
	Now that LLVM has been updated, the only remaining roadblock to implementing unwinding for MSVC is to fill out the runtime support in `std::rt::unwind::seh`. This commit does precisely that, fixing up some other bits and pieces along the way: * The `seh` unwinding module now uses `RaiseException` to initiate a panic. * The `rust_try.ll` file was rewritten for MSVC (as it's quite different) and is located at `rust_try_msvc_64.ll`, only included on MSVC builds for now. * The personality function for all landing pads generated by LLVM is hard-wired to `__C_specific_handler` instead of the standard `rust_eh_personality` lang item. This is required to get LLVM to emit SEH unwinding information instead of DWARF unwinding information. This also means that on MSVC the `rust_eh_personality` function is entirely unused (but is defined as it's a lang item). More details about how panicking works on SEH can be found in the `rust_try_msvc_64.ll` or `seh.rs` files, but I'm always open to adding more comments! A key aspect of this PR is missing, however, which is that unwinding is still turned off by default for MSVC. There is a [bug in llvm][llvm-bug] which causes optimizations to inline enough landing pads that LLVM chokes. If the compiler is optimized at `-O1` (where inlining isn't enabled) then it can bootstrap with unwinding enabled, but when optimized at `-O2` (inlining is enabled) then it hits a fatal LLVM error. [llvm-bug]: https://llvm.org/bugs/show_bug.cgi?id=23884
2015-06-17	More test fixes and fallout of stability changes	Alex Crichton	-2/+1

2015-05-27	Use `const fn` to abstract away the contents of UnsafeCell & friends.	Eduard Burtescu	-11/+11

2015-05-19	std: Don't require rust_try as an exported symbol	Alex Crichton	-9/+24
	This commit adds a small non-generic non-inlineable shim function to `rt::unwind::try` which the compiler can take care of for managing the exported symbol instead of having to edit `src/rt/rust_try.ll`
2015-05-19	std: Implement aborting stubs for MSVC unwinding	Alex Crichton	-0/+676
	At this time unwinding support is not implemented for MSVC as `libgcc_s_seh-1.dll` is not available by default (and this is used on MinGW), but this should be investigated soon. For now this change is just aimed at getting the compiler far enough to bootstrap everything instead of successfully running tests. This commit refactors the `std::rt::unwind` module a bit to prepare for SEH support eventually by moving all GCC-specific functionality to its own submodule and defining the interface needed.