diff options
Diffstat (limited to 'src/cpu/o3/inst_queue_impl.hh')
| -rw-r--r-- | src/cpu/o3/inst_queue_impl.hh | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/cpu/o3/inst_queue_impl.hh b/src/cpu/o3/inst_queue_impl.hh index 20b41e51d..c3e3fdf32 100644 --- a/src/cpu/o3/inst_queue_impl.hh +++ b/src/cpu/o3/inst_queue_impl.hh @@ -1,5 +1,5 @@ /* - * Copyright (c) 2011-2014, 2017-2018 ARM Limited + * Copyright (c) 2011-2014, 2017-2019 ARM Limited * Copyright (c) 2013 Advanced Micro Devices, Inc. * All rights reserved. * @@ -1033,6 +1033,17 @@ InstructionQueue<Impl>::wakeDependents(const DynInstPtr &completed_inst) continue; } + // Avoid waking up dependents if the register is pinned + dest_reg->decrNumPinnedWritesToComplete(); + if (dest_reg->isPinned()) + completed_inst->setPinnedRegsWritten(); + + if (dest_reg->getNumPinnedWritesToComplete() != 0) { + DPRINTF(IQ, "Reg %d [%s] is pinned, skipping\n", + dest_reg->index(), dest_reg->className()); + continue; + } + DPRINTF(IQ, "Waking any dependents on register %i (%s).\n", dest_reg->index(), dest_reg->className()); |