Hello
Is it currently possible to get total instruction count under X86? Or
does it only count uops?
With the (horrible kludge) patch below I was able to get actual
instruction count on the simple simluator. The instruction counts
generated actually match real-world perf counter retired instruction count
fairly closely on a few benchmarks I looked at. I was hoping though that
maybe this was supported and I just couldn't find the right config option.
Vince
diff -r 1f5126d7a1bd src/cpu/simple/atomic.cc
--- a/src/cpu/simple/atomic.cc Tue Sep 22 00:05:14 2009 -0400
+++ b/src/cpu/simple/atomic.cc Thu Sep 24 16:35:32 2009 -0400
@@ -664,8 +664,9 @@
fault = curStaticInst->execute(this, traceData);
// keep an instruction count
- if (fault == NoFault)
- countInst();
+ if (fault == NoFault) {
+ if (curStaticInst->isLastMicroop()) countInst();
+ }
else if (traceData) {
// If there was a fault, we should trace this instruction.
delete traceData;
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