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* [gcc r13-2726] Adjust issue_rate for latest Intel processors.
@ 2022-09-20 2:23 hongtao Liu
0 siblings, 0 replies; only message in thread
From: hongtao Liu @ 2022-09-20 2:23 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:041812f584a1c82f1255bd96f3503493bd9fb127
commit r13-2726-g041812f584a1c82f1255bd96f3503493bd9fb127
Author: liuhongt <hongtao.liu@intel.com>
Date: Tue Sep 6 11:04:40 2022 +0800
Adjust issue_rate for latest Intel processors.
For Skylake based processor, decoder is 4-way.
For Sunny Cove and Willow Cove, decoder is 5-way.
For Golden cove, decoder is 6-way.
gcc/ChangeLog:
* config/i386/x86-tune-sched.cc (ix86_issue_rate): Adjust for
latest Intel processors.
Diff:
---
gcc/config/i386/x86-tune-sched.cc | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/gcc/config/i386/x86-tune-sched.cc b/gcc/config/i386/x86-tune-sched.cc
index 1ffaeef037c..e2765f81902 100644
--- a/gcc/config/i386/x86-tune-sched.cc
+++ b/gcc/config/i386/x86-tune-sched.cc
@@ -73,10 +73,24 @@ ix86_issue_rate (void)
case PROCESSOR_SANDYBRIDGE:
case PROCESSOR_HASWELL:
case PROCESSOR_TREMONT:
+ case PROCESSOR_SKYLAKE:
+ case PROCESSOR_SKYLAKE_AVX512:
+ case PROCESSOR_CASCADELAKE:
+ case PROCESSOR_CANNONLAKE:
case PROCESSOR_ALDERLAKE:
case PROCESSOR_GENERIC:
return 4;
+ case PROCESSOR_ICELAKE_CLIENT:
+ case PROCESSOR_ICELAKE_SERVER:
+ case PROCESSOR_TIGERLAKE:
+ case PROCESSOR_COOPERLAKE:
+ case PROCESSOR_ROCKETLAKE:
+ return 5;
+
+ case PROCESSOR_SAPPHIRERAPIDS:
+ return 6;
+
default:
return 1;
}
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