Fix default SMT configuration in O3CPU (i.e. fetch policy, workloads/numThreads)

Edit Test3 for newmem

src/base/traceflags.py:
    Add O3CPU flag
src/cpu/base.cc:
    for some reason adding a BaseCPU flag doesnt work so just go back to old way...
src/cpu/o3/alpha/cpu_builder.cc:
    Determine number threads by workload size instead of solely by parameter.

    Default SMT fetch policy to RoundRobin if it's not specified in Config file
src/cpu/o3/commit.hh:
    only use nextNPC for !ALPHA
src/cpu/o3/commit_impl.hh:
    add FetchTrapPending as condition for commit
src/cpu/o3/cpu.cc:
    panic if active threads is more than Impl::MaxThreads
src/cpu/o3/fetch.hh:
src/cpu/o3/inst_queue.hh:
src/cpu/o3/inst_queue_impl.hh:
src/cpu/o3/rob.hh:
src/cpu/o3/rob_impl.hh:
    name stuff
src/cpu/o3/fetch_impl.hh:
    fatal if try to use SMT branch count, that's unimplemented right now
src/python/m5/config.py:
    make it clearer that a parameter is not valid within a configuration class

--HG--
extra : convert_revision : 55069847304e40e257f9225f0dc3894ce6491b34

1 files changed, 8 insertions, 2 deletions

diff --git a/src/cpu/o3/cpu.cc b/src/cpu/o3/cpu.cc
index 7ed17a91e..feca4cdf2 100644
--- a/src/cpu/o3/cpu.cc
+++ b/src/cpu/o3/cpu.cc
@@ -127,7 +127,7 @@ FullO3CPU<Impl>::FullO3CPU(Params *params)
 
       regFile(params->numPhysIntRegs, params->numPhysFloatRegs),
 
-      freeList(params->numberOfThreads,//number of activeThreads
+      freeList(params->numberOfThreads,
                TheISA::NumIntRegs, params->numPhysIntRegs,
                TheISA::NumFloatRegs, params->numPhysFloatRegs),
 
@@ -135,7 +135,7 @@ FullO3CPU<Impl>::FullO3CPU(Params *params)
           params->smtROBPolicy, params->smtROBThreshold,
           params->numberOfThreads),
 
-      scoreboard(params->numberOfThreads,//number of activeThreads
+      scoreboard(params->numberOfThreads,
                  TheISA::NumIntRegs, params->numPhysIntRegs,
                  TheISA::NumFloatRegs, params->numPhysFloatRegs,
                  TheISA::NumMiscRegs * number_of_threads,
@@ -221,6 +221,12 @@ FullO3CPU<Impl>::FullO3CPU(Params *params)
 
 #if !FULL_SYSTEM
     int active_threads = params->workload.size();
+
+    if (active_threads > Impl::MaxThreads) {
+        panic("Workload Size too large. Increase the 'MaxThreads'"
+              "constant in your O3CPU impl. file (e.g. o3/alpha/impl.hh) or "
+              "edit your workload size.");
+    }
 #else
     int active_threads = 1;
 #endif