From 01dd4ea3347c987387f162b85a9ff1fe84d92aa1 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Sat, 8 Aug 2015 07:20:04 +0000
Subject: Add SlowBTMem to Sandy Bridge and newer Intel CPUs. Reading through
 Agner Fog's table suggests there have been no improvements to these
 processors relative to Westmere for bit test instructions.

llvm-svn: 244395
---
 llvm/lib/Target/X86/X86.td | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

(limited to 'llvm/lib')

diff --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index 2965cefe3d3..9a09f3e38cf 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -307,6 +307,7 @@ def : WestmereProc<"westmere">;
 class SandyBridgeProc<string Name> : ProcessorModel<Name, SandyBridgeModel, [
                                        FeatureAVX,
                                        FeatureCMPXCHG16B,
+                                       FeatureSlowBTMem,
                                        FeatureFastUAMem,
                                        FeatureSlowUAMem32,
                                        FeaturePOPCNT,
@@ -319,6 +320,7 @@ def : SandyBridgeProc<"corei7-avx">; // Legacy alias.
 class IvyBridgeProc<string Name> : ProcessorModel<Name, SandyBridgeModel, [
                                      FeatureAVX,
                                      FeatureCMPXCHG16B,
+                                     FeatureSlowBTMem,
                                      FeatureFastUAMem,
                                      FeatureSlowUAMem32,
                                      FeaturePOPCNT,
@@ -334,6 +336,7 @@ def : IvyBridgeProc<"core-avx-i">; // Legacy alias.
 class HaswellProc<string Name> : ProcessorModel<Name, HaswellModel, [
                                    FeatureAVX2,
                                    FeatureCMPXCHG16B,
+                                   FeatureSlowBTMem,
                                    FeatureFastUAMem,
                                    FeaturePOPCNT,
                                    FeatureAES,
@@ -356,6 +359,7 @@ def : HaswellProc<"core-avx2">; // Legacy alias.
 class BroadwellProc<string Name> : ProcessorModel<Name, HaswellModel, [
                                      FeatureAVX2,
                                      FeatureCMPXCHG16B,
+                                     FeatureSlowBTMem,
                                      FeatureFastUAMem,
                                      FeaturePOPCNT,
                                      FeatureAES,
@@ -390,11 +394,11 @@ def : KnightsLandingProc<"knl">;
 class SkylakeProc<string Name> : ProcessorModel<Name, HaswellModel,
                      [FeatureAVX512, FeatureCDI,
                       FeatureDQI, FeatureBWI, FeatureVLX,
-                      FeatureCMPXCHG16B, FeatureFastUAMem, FeaturePOPCNT,
-                      FeatureAES, FeaturePCLMUL, FeatureRDRAND, FeatureF16C,
-                      FeatureFSGSBase, FeatureMOVBE, FeatureLZCNT, FeatureBMI,
-                      FeatureBMI2, FeatureFMA, FeatureRTM, FeatureHLE,
-                      FeatureSlowIncDec, FeatureMPX]>;
+                      FeatureCMPXCHG16B, FeatureSlowBTMem, FeatureFastUAMem,
+                      FeaturePOPCNT, FeatureAES, FeaturePCLMUL, FeatureRDRAND,
+                      FeatureF16C, FeatureFSGSBase, FeatureMOVBE, FeatureLZCNT,
+                      FeatureBMI, FeatureBMI2, FeatureFMA, FeatureRTM,
+                      FeatureHLE, FeatureSlowIncDec, FeatureMPX]>;
 def : SkylakeProc<"skylake">;
 def : SkylakeProc<"skx">; // Legacy alias.
 
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