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Jonathan Roelofs authoredThe idea for this originated from a really tricky bug: ISRs on ARM don't automatically save off the VFP regs, so if say, memcpy gets interrupted and the ISR itself calls memcpy, the regs are left clobbered when the ISR is done. https://reviews.llvm.org/D28820 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@292375 91177308-0d34-0410-b5e6-96231b3b80d8
Jonathan Roelofs authoredThe idea for this originated from a really tricky bug: ISRs on ARM don't automatically save off the VFP regs, so if say, memcpy gets interrupted and the ISR itself calls memcpy, the regs are left clobbered when the ISR is done. https://reviews.llvm.org/D28820 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@292375 91177308-0d34-0410-b5e6-96231b3b80d8
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