From 164cc2781fb1b732ce88fc1c05a667b7d3d558f7 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Sun, 3 Oct 2021 18:38:47 +0100
Subject: [PATCH] [X86] Split Cannonlake + Icelake Tuning. NFC

The Ice/Tiger/RocketLake specs were inheriting the tuning settings from CannonLake, a previous architecture. We shouldn't have this dependency, so I've copied the current tuning settings so we can make future adjustments to both CNL + ICL etc. more easily.
---
 llvm/lib/Target/X86/X86.td | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index 779a162..2d7d4dd 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -803,7 +803,18 @@ def ProcessorFeatures {
                                                   FeatureGFNI,
                                                   FeatureRDPID,
                                                   FeatureFSRM];
-  list<SubtargetFeature> ICLTuning = CNLTuning;
+  list<SubtargetFeature> ICLTuning = [TuningFastGather,
+                                      TuningMacroFusion,
+                                      TuningSlow3OpsLEA,
+                                      TuningSlowDivide64,
+                                      TuningFastScalarFSQRT,
+                                      TuningFastVectorFSQRT,
+                                      TuningFastSHLDRotate,
+                                      TuningFast15ByteNOP,
+                                      TuningFastVariableCrossLaneShuffle,
+                                      TuningFastVariablePerLaneShuffle,
+                                      TuningPrefer256Bit,
+                                      TuningInsertVZEROUPPER];
   list<SubtargetFeature> ICLFeatures =
     !listconcat(CNLFeatures, ICLAdditionalFeatures);
 
@@ -811,7 +822,7 @@ def ProcessorFeatures {
   list<SubtargetFeature> ICXAdditionalFeatures = [FeaturePCONFIG,
                                                   FeatureCLWB,
                                                   FeatureWBNOINVD];
-  list<SubtargetFeature> ICXTuning = CNLTuning;
+  list<SubtargetFeature> ICXTuning = ICLTuning;
   list<SubtargetFeature> ICXFeatures =
     !listconcat(ICLFeatures, ICXAdditionalFeatures);
 
@@ -821,7 +832,7 @@ def ProcessorFeatures {
                                                   FeatureMOVDIRI,
                                                   FeatureMOVDIR64B,
                                                   FeatureSHSTK];
-  list<SubtargetFeature> TGLTuning = CNLTuning;
+  list<SubtargetFeature> TGLTuning = ICLTuning;
   list<SubtargetFeature> TGLFeatures =
     !listconcat(ICLFeatures, TGLAdditionalFeatures );
 
-- 
2.7.4