Hi,
This patch aims to set SRF issue rate to 4, GNR issue rate to 6. According to
tests about spec2017, the patch has little effect on performance.
For GRR, CWF, DMR, ARL and PTL, the patch set their issue rate to 6. Waiting for
more information to update.
Bootstrapped and regtested on x86_64-linux-pc-gnu, OK for trunk.
BRs,
Lin
gcc/ChangeLog:
* config/i386/x86-tune-sched.cc (ix86_issue_rate): Set 4 for SRF,
6 for GRR, GNR, CWF, DMR, ARL, PTL.
---
gcc/config/i386/x86-tune-sched.cc | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/gcc/config/i386/x86-tune-sched.cc
b/gcc/config/i386/x86-tune-sched.cc
index 15d3d91a83b..61b1a2686ad 100644
--- a/gcc/config/i386/x86-tune-sched.cc
+++ b/gcc/config/i386/x86-tune-sched.cc
@@ -80,6 +80,7 @@ ix86_issue_rate (void)
case PROCESSOR_ALDERLAKE:
case PROCESSOR_YONGFENG:
case PROCESSOR_SHIJIDADAO:
+ case PROCESSOR_SIERRAFOREST:
case PROCESSOR_GENERIC:
/* For znver5 decoder can handle 4 or 8 instructions per cycle,
op cache 12 instruction/cycle, dispatch 8 instructions
@@ -99,6 +100,14 @@ ix86_issue_rate (void)
return 5;
case PROCESSOR_SAPPHIRERAPIDS:
+ case PROCESSOR_GRANITERAPIDS:
+ case PROCESSOR_GRANITERAPIDS_D:
+ case PROCESSOR_DIAMONDRAPIDS:
+ case PROCESSOR_GRANDRIDGE:
+ case PROCESSOR_CLEARWATERFOREST:
+ case PROCESSOR_ARROWLAKE:
+ case PROCESSOR_ARROWLAKE_S:
+ case PROCESSOR_PANTHERLAKE:
return 6;
default:
--
2.31.1
