From ca8370396af6ee3223ae403845a8d4e3864afeb6 Mon Sep 17 00:00:00 2001
From: Evandro Menezes <e.menezes@samsung.com>
Date: Wed, 26 Oct 2016 22:06:20 +0000
Subject: [PATCH] [AArch64] Create feature set for Samsung Exynos-M2

Since Exynos-M2 improved the FP square root unit a bit over the one in
Exynos-M1, it does not benefit from using the Newton series for such
operations.

llvm-svn: 285246
---
 llvm/lib/Target/AArch64/AArch64.td | 37 ++++++++++++++++++++++++-------------
 1 file changed, 24 insertions(+), 13 deletions(-)

diff --git a/llvm/lib/Target/AArch64/AArch64.td b/llvm/lib/Target/AArch64/AArch64.td
index 4857a04..bf6b413 100644
--- a/llvm/lib/Target/AArch64/AArch64.td
+++ b/llvm/lib/Target/AArch64/AArch64.td
@@ -222,18 +222,29 @@ def ProcCyclone : SubtargetFeature<"cyclone", "ARMProcFamily", "Cyclone",
                                    ]>;
 
 def ProcExynosM1 : SubtargetFeature<"exynosm1", "ARMProcFamily", "ExynosM1",
-                                    "Samsung Exynos-M1 processors", [
-                                    FeatureAvoidQuadLdStPairs,
-                                    FeatureCRC,
-                                    FeatureCrypto,
-                                    FeatureCustomCheapAsMoveHandling,
-                                    FeatureFPARMv8,
-                                    FeatureNEON,
-                                    FeaturePerfMon,
-                                    FeaturePostRAScheduler,
-                                    FeatureUseRSqrt,
-                                    FeatureZCZeroing
-                                    ]>;
+                                    "Samsung Exynos-M1 processors",
+                                    [FeatureAvoidQuadLdStPairs,
+                                     FeatureCRC,
+                                     FeatureCrypto,
+                                     FeatureCustomCheapAsMoveHandling,
+                                     FeatureFPARMv8,
+                                     FeatureNEON,
+                                     FeaturePerfMon,
+                                     FeaturePostRAScheduler,
+                                     FeatureUseRSqrt,
+                                     FeatureZCZeroing]>;
+
+def ProcExynosM2 : SubtargetFeature<"exynosm2", "ARMProcFamily", "ExynosM1",
+                                    "Samsung Exynos-M2 processors",
+                                    [FeatureAvoidQuadLdStPairs,
+                                     FeatureCRC,
+                                     FeatureCrypto,
+                                     FeatureCustomCheapAsMoveHandling,
+                                     FeatureFPARMv8,
+                                     FeatureNEON,
+                                     FeaturePerfMon,
+                                     FeaturePostRAScheduler,
+                                     FeatureZCZeroing]>;
 
 def ProcKryo    : SubtargetFeature<"kryo", "ARMProcFamily", "Kryo",
                                    "Qualcomm Kryo processors", [
@@ -277,7 +288,7 @@ def : ProcessorModel<"cortex-a72", CortexA57Model, [ProcA72]>;
 def : ProcessorModel<"cortex-a73", CortexA57Model, [ProcA73]>;
 def : ProcessorModel<"cyclone", CycloneModel, [ProcCyclone]>;
 def : ProcessorModel<"exynos-m1", ExynosM1Model, [ProcExynosM1]>;
-def : ProcessorModel<"exynos-m2", ExynosM1Model, [ProcExynosM1]>;
+def : ProcessorModel<"exynos-m2", ExynosM1Model, [ProcExynosM2]>;
 def : ProcessorModel<"kryo", KryoModel, [ProcKryo]>;
 def : ProcessorModel<"vulcan", VulcanModel, [ProcVulcan]>;
 
-- 
2.7.4