From 16ea8ba3bcd99d86b5bff5d410deac2e3517eb4a Mon Sep 17 00:00:00 2001
From: Renato Golin <renato.golin@linaro.org>
Date: Mon, 13 Oct 2014 10:22:19 +0000
Subject: [PATCH] Adds support for the Cortex-A17 to the ARM backend

Patch by Matthew Wahab.

llvm-svn: 219606
---
 llvm/lib/Target/ARM/ARM.td                | 15 +++++++++++
 llvm/lib/Target/ARM/ARMSubtarget.h        |  2 +-
 llvm/test/CodeGen/ARM/build-attributes.ll | 32 +++++++++++++++++++++++
 3 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Target/ARM/ARM.td b/llvm/lib/Target/ARM/ARM.td
index 26bbc164f024..4dc17bc11830 100644
--- a/llvm/lib/Target/ARM/ARM.td
+++ b/llvm/lib/Target/ARM/ARM.td
@@ -228,6 +228,15 @@ def ProcA15      : SubtargetFeature<"a15", "ARMProcFamily", "CortexA15",
                                     FeatureAvoidPartialCPSR,
                                     FeatureTrustZone, FeatureVirtualization]>;
 
+def ProcA17     : SubtargetFeature<"a17", "ARMProcFamily", "CortexA17",
+                                   "Cortex-A17 ARM processors",
+                                   [FeatureVMLxForwarding,
+                                    FeatureT2XtPk, FeatureVFP4,
+                                    FeatureHWDiv, FeatureHWDivARM,
+                                    FeatureAvoidPartialCPSR,
+                                    FeatureVirtualization,
+                                    FeatureTrustZone]>;
+
 def ProcA53     : SubtargetFeature<"a53", "ARMProcFamily", "CortexA53",
                                    "Cortex-A53 ARM processors",
                                    [FeatureHWDiv, FeatureHWDivARM,
@@ -366,6 +375,12 @@ def : ProcessorModel<"cortex-a15",   CortexA9Model,
                                      FeatureDSPThumb2, FeatureHasRAS,
                                      FeatureAClass]>;
 
+// FIXME: A17 has currently the same Schedule model as A9
+def : ProcessorModel<"cortex-a17",  CortexA9Model,
+                                    [ProcA17, HasV7Ops, FeatureNEON, FeatureDB,
+                                     FeatureDSPThumb2, FeatureMP,
+                                     FeatureHasRAS, FeatureAClass]>;
+
 // FIXME: krait has currently the same Schedule model as A9
 def : ProcessorModel<"krait",       CortexA9Model,
                                     [ProcKrait, HasV7Ops,
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index 8c85ad73ac74..12899f997652 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -42,7 +42,7 @@ class ARMSubtarget : public ARMGenSubtargetInfo {
 protected:
   enum ARMProcFamilyEnum {
     Others, CortexA5, CortexA7, CortexA8, CortexA9, CortexA12, CortexA15,
-    CortexR5, Swift, CortexA53, CortexA57, Krait
+    CortexA17, CortexR5, Swift, CortexA53, CortexA57, Krait, 
   };
   enum ARMProcClassEnum {
     None, AClass, RClass, MClass
diff --git a/llvm/test/CodeGen/ARM/build-attributes.ll b/llvm/test/CodeGen/ARM/build-attributes.ll
index e72b269c0e0c..e0b681f22313 100644
--- a/llvm/test/CodeGen/ARM/build-attributes.ll
+++ b/llvm/test/CodeGen/ARM/build-attributes.ll
@@ -22,6 +22,8 @@
 ; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=cortex-a12 -mattr=-vfp2 | FileCheck %s --check-prefix=CORTEX-A12-NOFPU
 ; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=cortex-a9-mp | FileCheck %s --check-prefix=CORTEX-A9-MP
 ; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=cortex-a15 | FileCheck %s --check-prefix=CORTEX-A15
+; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=cortex-a17 | FileCheck %s --check-prefix=CORTEX-A17-DEFAULT
+; RUN: llc < %s -mtriple=armv7-linux-gnueabi -mcpu=cortex-a17 -mattr=-vfp2 | FileCheck %s --check-prefix=CORTEX-A17-NOFPU
 ; RUN: llc < %s -mtriple=thumbv6m-linux-gnueabi -mcpu=cortex-m0 | FileCheck %s --check-prefix=CORTEX-M0
 ; RUN: llc < %s -mtriple=thumbv7m-linux-gnueabi -mcpu=cortex-m3 | FileCheck %s --check-prefix=CORTEX-M3
 ; RUN: llc < %s -mtriple=thumbv7m-linux-gnueabi -mcpu=cortex-m4 -float-abi=soft | FileCheck %s --check-prefix=CORTEX-M4-SOFT
@@ -375,6 +377,36 @@
 ; CORTEX-A15: .eabi_attribute 44, 2
 ; CORTEX-A15: .eabi_attribute 68, 3
 
+; CORTEX-A17-DEFAULT:  .cpu cortex-a17
+; CORTEX-A17-DEFAULT:  .eabi_attribute 6, 10
+; CORTEX-A17-DEFAULT:  .eabi_attribute 7, 65
+; CORTEX-A17-DEFAULT:  .eabi_attribute 8, 1
+; CORTEX-A17-DEFAULT:  .eabi_attribute 9, 2
+; CORTEX-A17-DEFAULT:  .fpu neon-vfpv4
+; CORTEX-A17-DEFAULT:  .eabi_attribute 20, 1
+; CORTEX-A17-DEFAULT:  .eabi_attribute 21, 1
+; CORTEX-A17-DEFAULT:  .eabi_attribute 23, 3
+; CORTEX-A17-DEFAULT:  .eabi_attribute 24, 1
+; CORTEX-A17-DEFAULT:  .eabi_attribute 25, 1
+; CORTEX-A17-DEFAULT:  .eabi_attribute 42, 1
+; CORTEX-A17-DEFAULT:  .eabi_attribute 44, 2
+; CORTEX-A17-DEFAULT:  .eabi_attribute 68, 3
+
+; CORTEX-A17-NOFPU:  .cpu cortex-a17
+; CORTEX-A17-NOFPU:  .eabi_attribute 6, 10
+; CORTEX-A17-NOFPU:  .eabi_attribute 7, 65
+; CORTEX-A17-NOFPU:  .eabi_attribute 8, 1
+; CORTEX-A17-NOFPU:  .eabi_attribute 9, 2
+; CORTEX-A17-NOFPU-NOT:  .fpu
+; CORTEX-A17-NOFPU:  .eabi_attribute 20, 1
+; CORTEX-A17-NOFPU:  .eabi_attribute 21, 1
+; CORTEX-A17-NOFPU:  .eabi_attribute 23, 3
+; CORTEX-A17-NOFPU:  .eabi_attribute 24, 1
+; CORTEX-A17-NOFPU:  .eabi_attribute 25, 1
+; CORTEX-A17-NOFPU:  .eabi_attribute 42, 1
+; CORTEX-A17-NOFPU:  .eabi_attribute 44, 2
+; CORTEX-A17-NOFPU:  .eabi_attribute 68, 3
+
 ; CORTEX-M0:  .cpu cortex-m0
 ; CORTEX-M0:  .eabi_attribute 6, 12
 ; CORTEX-M0-NOT:  .eabi_attribute 7