commit 086005343729daa43222945cd264a392ebe3367d
author Chih-Hung Hsieh <chh@google.com> Thu Dec 19 15:55:38 2019 -0800
committer Chih-Hung Hsieh <chh@google.com> Thu Dec 19 16:00:07 2019 -0800
tree 8bf3e03d05866f72c0af72b911dfaae21c250a8f
parent bc2a45aebf2f3f158c878db02ee23d906d1269df

Importing rustc-1.38.0

Bug: 146571186
Change-Id: Idd23b6282b5f216d22a897103cac97284f84b416

src/llvm-project/llvm/lib/Target/PowerPC/PPCSubtarget.cpp

diff --git a/src/llvm-project/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/src/llvm-project/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
index c0cbfd7..6aa7528 100644
--- a/src/llvm-project/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/src/llvm-project/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -1,9 +1,8 @@
 //===-- PowerPCSubtarget.cpp - PPC Subtarget Information ------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
@@ -40,6 +39,11 @@
   cl::desc("Even when QPX is enabled the stack is not 32-byte aligned"),
   cl::Hidden);
 
+static cl::opt<bool>
+    EnableMachinePipeliner("ppc-enable-pipeliner",
+                           cl::desc("Enable Machine Pipeliner for PPC"),
+                           cl::init(false), cl::Hidden);
+
 PPCSubtarget &PPCSubtarget::initializeSubtargetDependencies(StringRef CPU,
                                                             StringRef FS) {
   initializeEnvironment();
@@ -68,6 +72,7 @@
   HasFPU = false;
   HasQPX = false;
   HasVSX = false;
+  NeedsTwoConstNR = false;
   HasP8Vector = false;
   HasP8Altivec = false;
   HasP8Crypto = false;
@@ -103,11 +108,13 @@
   HasDirectMove = false;
   IsQPXStackUnaligned = false;
   HasHTM = false;
-  HasFusion = false;
   HasFloat128 = false;
   IsISA3_0 = false;
   UseLongCalls = false;
   SecurePlt = false;
+  VectorsUseTwoUnits = false;
+  UsePPCPreRASchedStrategy = false;
+  UsePPCPostRASchedStrategy = false;
 
   HasPOPCNTD = POPCNTD_Unavailable;
 }
@@ -138,6 +145,10 @@
   if (isDarwin())
     HasLazyResolverStubs = true;
 
+  if (TargetTriple.isOSNetBSD() || TargetTriple.isOSOpenBSD() ||
+      TargetTriple.isMusl())
+    SecurePlt = true;
+
   if (HasSPE && IsPPC64)
     report_fatal_error( "SPE is only supported for 32-bit targets.\n", false);
   if (HasSPE && (HasAltivec || HasQPX || HasVSX || HasFPU))
@@ -175,10 +186,14 @@
   return false;
 }
 
-bool PPCSubtarget::enableMachineScheduler() const {
-  return true;
+bool PPCSubtarget::enableMachineScheduler() const { return true; }
+
+bool PPCSubtarget::enableMachinePipeliner() const {
+  return (DarwinDirective == PPC::DIR_PWR9) && EnableMachinePipeliner;
 }
 
+bool PPCSubtarget::useDFAforSMS() const { return false; }
+
 // This overrides the PostRAScheduler bit in the SchedModel for each CPU.
 bool PPCSubtarget::enablePostRAScheduler() const { return true; }