[PATCH] D28820: Warn when calling a non interrupt function from an interrupt on ARM
Eli Friedman via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Wed Jan 18 12:25:23 PST 2017
efriedma added a comment.
> There would be a big performance penalty for ISRs with callees that don't use VFP regs.
Sacrificing correctness for the sake of performance seems like a bad idea... especially given that the optimizer can insert calls to memcpy where they didn't originally exist in the source.
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