From 5ebf3b280867925917654f5362d3ece21dc2355e Mon Sep 17 00:00:00 2001 From: Matt Horsnell Date: Tue, 18 Jan 2011 16:30:02 -0600 Subject: O3: Fixes the way prefetches are handled inside the iew unit. This patch prevents the prefetch being added to the instCommit queue twice. --- src/cpu/o3/iew_impl.hh | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'src/cpu/o3') diff --git a/src/cpu/o3/iew_impl.hh b/src/cpu/o3/iew_impl.hh index e1af20852..3f53b4197 100644 --- a/src/cpu/o3/iew_impl.hh +++ b/src/cpu/o3/iew_impl.hh @@ -1222,8 +1222,7 @@ DefaultIEW::executeInsts() // Execute instruction. // Note that if the instruction faults, it will be handled // at the commit stage. - if (inst->isMemRef() && - (!inst->isDataPrefetch() && !inst->isInstPrefetch())) { + if (inst->isMemRef()) { DPRINTF(IEW, "Execute: Calculating address for memory " "reference.\n"); @@ -1232,6 +1231,9 @@ DefaultIEW::executeInsts() // Loads will mark themselves as executed, and their writeback // event adds the instruction to the queue to commit fault = ldstQueue.executeLoad(inst); + if (inst->isDataPrefetch() || inst->isInstPrefetch()) { + fault = NoFault; + } } else if (inst->isStore()) { fault = ldstQueue.executeStore(inst); -- cgit v1.2.3