[llvm] [llvm-exegesis] Add Pfm Counters for SapphireRapids (PR #113847)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 created https://github.com/llvm/llvm-project/pull/113847

This patch adds the appropriate hookups in X86PfmCounters.td for SapphireRapids. This is mostly to fix errors when some of my jobs that only really need dummy counters get scheduled on sapphire rapids machines, but figured I might as well do it properly while here. I do not have hardware access to test this currently, but this matches exactly with what is in the libpfm source code.

>From 211f3332de0eb3a4a07de6f7a6c3206e858c2bfe Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman at google.com>
Date: Sun, 27 Oct 2024 23:33:38 +0000
Subject: [PATCH] [llvm-exegesis] Add Pfm Counters for SapphireRapids

This patch adds the appropriate hookups in X86PfmCounters.td for
SapphireRapids. This is mostly to fix errors when some of my jobs that
only really need dummy counters get scheduled on sapphire rapids
machines, but figured I might as well do it properly while here. I do
not have hardware access to test this currently, but this matches
exactly with what is in the libpfm source code.
---
 llvm/lib/Target/X86/X86PfmCounters.td         | 16 ++++++++++++++++
 llvm/lib/Target/X86/X86SchedSapphireRapids.td |  6 ++++++
 2 files changed, 22 insertions(+)

diff --git a/llvm/lib/Target/X86/X86PfmCounters.td b/llvm/lib/Target/X86/X86PfmCounters.td
index c30e989cdc2af1..38d8d19091e0fd 100644
--- a/llvm/lib/Target/X86/X86PfmCounters.td
+++ b/llvm/lib/Target/X86/X86PfmCounters.td
@@ -220,6 +220,22 @@ def AlderLakePfmCounters : ProcPfmCounters {
 }
 def : PfmCountersBinding<"alderlake", AlderLakePfmCounters>;
 
+def SapphireRapidsPfmCounters : ProcPfmCounters {
+  let CycleCounter = UnhaltedCoreCyclesPfmCounter;
+  let UopsCounter = UopsIssuedPfmCounter;
+  let IssueCounters = [
+    PfmIssueCounter<"SPRPort00", "uops_dispatched_port:port_0">,
+    PfmIssueCounter<"SPRPort01", "uops_dispatched_port:port_1">,
+    PfmIssueCounter<"SPRPort02_03_10", "uops_dispatched_port:port_2_3_10">,
+    PfmIssueCounter<"SPRPort04_09", "uops_dispatched_port:port_4_9">,
+    PfmIssueCounter<"SPRPort05_11", "uops_dispatched_port:port_5_11">,
+    PfmIssueCounter<"SPRPort06", "uops_dispatched_port:port_6">,
+    PfmIssueCounter<"SPRPort07_08", "uops_dispatched_port:port_7_8">,
+  ];
+  let ValidationCounters = DefaultIntelPfmValidationCounters;
+}
+def : PfmCountersBinding<"sapphirerapids", SapphireRapidsPfmCounters>;
+
 // AMD X86 Counters.
 defvar DefaultAMDPfmValidationCounters = [
   PfmValidationCounter<InstructionRetired, "RETIRED_INSTRUCTIONS">,
diff --git a/llvm/lib/Target/X86/X86SchedSapphireRapids.td b/llvm/lib/Target/X86/X86SchedSapphireRapids.td
index 6e292da4e293db..b0ebe70c31fd44 100644
--- a/llvm/lib/Target/X86/X86SchedSapphireRapids.td
+++ b/llvm/lib/Target/X86/X86SchedSapphireRapids.td
@@ -59,6 +59,8 @@ def SPRPort01_05          : ProcResGroup<[SPRPort01, SPRPort05]>;
 def SPRPort01_05_10       : ProcResGroup<[SPRPort01, SPRPort05, SPRPort10]>;
 def SPRPort02_03          : ProcResGroup<[SPRPort02, SPRPort03]>;
 def SPRPort02_03_11       : ProcResGroup<[SPRPort02, SPRPort03, SPRPort11]>;
+def SPRPort02_03_10       : ProcResGroup<[SPRPort02, SPRPort03, SPRPort10]>;
+def SPRPort05_11          : ProcResGroup<[SPRPort05, SPRPort11]>;
 def SPRPort07_08          : ProcResGroup<[SPRPort07, SPRPort08]>;
 
 // EU has 112 reservation stations.
@@ -78,6 +80,10 @@ def SPRPort02_03_07_08_11 : ProcResGroup<[SPRPort02, SPRPort03, SPRPort07,
   let BufferSize = 72;
 }
 
+def SPRPortAny : ProcResGroup<[SPRPort00, SPRPort01, SPRPort02, SPRPort03,
+                               SPRPort04, SPRPort05, SPRPort06, SPRPort07,
+                               SPRPort08, SPRPort09, SPRPort10, SPRPort11]>;
+
 // Integer loads are 5 cycles, so ReadAfterLd registers needn't be available
 // until 5 cycles after the memory operand.
 def : ReadAdvance<ReadAfterLd, 5>;