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...s, or exception returns between the Load-Exclusive and the Store-Exclusive. • The following conditions apply between the Store-Exclusive having returned a fail result and the retry of the Load-Exclusive: – There are no stores to any location within the same Exclusives reservation granule that the StoreExclusive is accessing. – There are no direct or indirect register writes, other than changes to the flag fields in APSR or FPSCR, caused by data processing or comparison instructions. – There are no direct or indirect cache maintenance instructions, SVC instructions, or exception returns ""...

# RFC: Atomic LL/SC loops in LLVM revisited ## Summary This proposal gives a brief overview of the challenges of lowering to LL/SC loops and details the approach I am taking for RISC-V. Beyond getting feedback on that work, my intention is to find consensus on moving other backends towards a similar approach and sharing common code where feasible. Scroll down to 'Questions' for a summary