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...appily and regularly run C++ programs (with virtual functions and all) compiled by gcc on machines with only 2 KB of RAM: the ATmega328 in most Arduinos. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20181217/993bbbc9/attachment.html>

For a machine like an FPGA with no stack, you have to ensure that you have an optimization that rewrites the alloca into either registers (such as PromoteMem2Reg) or that you rewrite the alloca by declaring a static local, and rewriting the code to use that instead of the alloca result. Mark Mendell From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of Bruce Hoult via llvm-dev