software: enable link time optimization (LTO) #401
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Co-authored-by: Pawel Czarnecki <pczarnecki@internships.antmicro.com>
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Thanks, merged. I disabled it for LM32 with e2aebb4 since old versions of GCC easily available don't support it. |
This was referenced Feb 25, 2020
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It turned out that after merging ff2775c to LiteX,
-fltoworks fine with-Osand does not require-lgccanymore. That's why we are going back to the simplest solution, originally proposed by @mithro and discussed in: #253.Note: enabling LTO in LiteX requires enabling it in linux-on-litex-vexriscv as well. We have a patch prepared and will create a PR shortly.