arch: cpu: Stop passing around misc registers by reference.

These values are all basic integers (specifically uint64_t now), and
so passing them by const & is actually less efficient since there's a
extra level of indirection and an extra value, and the same sized value
(a 64 bit pointer vs. a 64 bit int) is being passed around.

Change-Id: Ie9956b8dc4c225068ab1afaba233ec2b42b76da3
Reviewed-on: https://gem5-review.googlesource.com/c/13626
Maintainer: Gabe Black <gabeblack@google.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/cpu/simple_thread.hh b/src/cpu/simple_thread.hh
index 073f7ab2c..211a4c89f 100644
--- a/src/cpu/simple_thread.hh
+++ b/src/cpu/simple_thread.hh
@@ -489,13 +489,13 @@ class SimpleThread : public ThreadState
     }
 
     void
-    setMiscRegNoEffect(int misc_reg, const RegVal &val, ThreadID tid = 0)
+    setMiscRegNoEffect(int misc_reg, RegVal val, ThreadID tid = 0)
     {
         return isa->setMiscRegNoEffect(misc_reg, val);
     }
 
     void
-    setMiscReg(int misc_reg, const RegVal &val, ThreadID tid = 0)
+    setMiscReg(int misc_reg, RegVal val, ThreadID tid = 0)
     {
         return isa->setMiscReg(misc_reg, val, tc);
     }