Compilation issues with debug and LTO enabled

[iopq]

I get Assertion failed: Ty == resolve(Ty->getRef()) && "type was not uniqued, possible ODR violation.", file C:\bot\slave\nightly-dist-rustc-win-msvc-64\build\src\llvm\lib\CodeGen\AsmPrinter\DwarfUnit.cpp, line 713 when trying to compile with debug and LTO at the same time

I am running Windows 8, using the MSVC 64 bit edition, 1.6 nightly

the project is https://github.com/ujh/iomrascalai if you want to reproduce the issue

[nagisa]

Duplicate of #25270