docs: Sphinxify TestingGuide

[oota-llvm.git] / lib / Target / CellSPU / SPUSubtarget.cpp

diff --git a/lib/Target/CellSPU/SPUSubtarget.cpp b/lib/Target/CellSPU/SPUSubtarget.cpp
index 90c5a0511d12d55778e045950eed6d5bdfad839e..eec2d250be7fc406c08534ab2f42790f336ccac2 100644 (file)
--- a/lib/Target/CellSPU/SPUSubtarget.cpp
+++ b/lib/Target/CellSPU/SPUSubtarget.cpp
@@ -1,28 +1,30 @@
-//===- SPUSubtarget.cpp - STI Cell SPU Subtarget Information --------------===//
+//===-- SPUSubtarget.cpp - STI Cell SPU Subtarget Information -------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by a team from the Computer Systems Research
-// Department at The Aerospace Corporation and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
-// This file implements the CellSPU-specific subclass of TargetSubtarget.
+// This file implements the CellSPU-specific subclass of TargetSubtargetInfo.
 //
 //===----------------------------------------------------------------------===//
 
 #include "SPUSubtarget.h"
 #include "SPU.h"
-#include "llvm/Module.h"
-#include "llvm/Target/TargetMachine.h"
-#include "SPUGenSubtarget.inc"
+#include "SPURegisterInfo.h"
+#include "llvm/Support/TargetRegistry.h"
+
+#define GET_SUBTARGETINFO_TARGET_DESC
+#define GET_SUBTARGETINFO_CTOR
+#include "SPUGenSubtargetInfo.inc"
 
 using namespace llvm;
 
-SPUSubtarget::SPUSubtarget(const TargetMachine &tm, const Module &M,
+SPUSubtarget::SPUSubtarget(const std::string &TT, const std::string &CPU,
                            const std::string &FS) :
-  TM(tm),
+  SPUGenSubtargetInfo(TT, CPU, FS),
   StackAlignment(16),
   ProcDirective(SPU::DEFAULT_PROC),
   UseLargeMem(false)
@@ -32,10 +34,32 @@ SPUSubtarget::SPUSubtarget(const TargetMachine &tm, const Module &M,
   std::string default_cpu("v0");
 
   // Parse features string.
-  ParseSubtargetFeatures(FS, default_cpu);
+  ParseSubtargetFeatures(default_cpu, FS);
+
+  // Initialize scheduling itinerary for the specified CPU.
+  InstrItins = getInstrItineraryForCPU(default_cpu);
 }
 
 /// SetJITMode - This is called to inform the subtarget info that we are
 /// producing code for the JIT.
 void SPUSubtarget::SetJITMode() {
 }
+
+/// Enable PostRA scheduling for optimization levels -O2 and -O3.
+bool SPUSubtarget::enablePostRAScheduler(
+                       CodeGenOpt::Level OptLevel,
+                       TargetSubtargetInfo::AntiDepBreakMode& Mode,
+                       RegClassVector& CriticalPathRCs) const {
+  Mode = TargetSubtargetInfo::ANTIDEP_CRITICAL;
+  // CriticalPathsRCs seems to be the set of
+  // RegisterClasses that antidep breakings are performed for.
+  // Do it for all register classes 
+  CriticalPathRCs.clear();
+  CriticalPathRCs.push_back(&SPU::R8CRegClass);
+  CriticalPathRCs.push_back(&SPU::R16CRegClass);
+  CriticalPathRCs.push_back(&SPU::R32CRegClass);
+  CriticalPathRCs.push_back(&SPU::R32FPRegClass);
+  CriticalPathRCs.push_back(&SPU::R64CRegClass);
+  CriticalPathRCs.push_back(&SPU::VECREGRegClass);
+  return OptLevel >= CodeGenOpt::Default;
+}