Link Time Optimization Bitcode File Format
teona.severin9 at gmail.com
Tue Oct 6 16:46:28 UTC 2020
I am trying to build the druntime with the 'ldc-build-runtime'
tool for microcontrollers (using the arm-none-eabi-gcc compiler)
and therefore the size of the druntime should be as little as
possible. One solution I had was to use Link Time Optimization
(LTO) to reduce the size.
The problem now is the fact that when I compile the druntime with
-flto=full or -flto=thin (as arguments for LDC2), the resulted
object files (and also a big part of the runtime as it is a
static library) have a different file format - LLVM IR bitcode -
than I need, which is ELF 32-bit. Also, when I try to link the
druntime with the application I want to write on the
microcontroller, there are some link errors due to the file
I also tried using a different archiver - llvm-ar - but I had no
Could you give me some advice about how should I fix this?
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