On Fri, 27 Jul 2018 at 11:38, Richard Earnshaw <richard.earns...@arm.com> wrote: > > > This patch defines a speculation barrier for AArch32. > > * config/arm/unspecs.md (unspecv): Add VUNSPEC_SPECULATION_BARRIER. > * config/arm/arm.md (speculation_barrier): New expand. > (speculation_barrier_insn): New pattern. > ---
Hi Richard, This patch causes compilation errors for c-c++-common/spec-barrier-2.c when compiled for old architectures (eg -march=armv5t): /ccrf2LoR.s:49: Error: selected processor does not support `isb' in ARM mode /ccrf2LoR.s:50: Error: selected processor does not support `dsb sy' in ARM mode Does this belong to the kind of failures you still expect from this patch series?
