The subtarget is cached on the MachineFunction. Access it directly.

llvm-svn: 227173

6 files changed, 16 insertions, 26 deletions

diff --git a/llvm/lib/CodeGen/EarlyIfConversion.cpp b/llvm/lib/CodeGen/EarlyIfConversion.cpp
index 995606f65d7..8f742713ccf 100644
--- a/llvm/lib/CodeGen/EarlyIfConversion.cpp
+++ b/llvm/lib/CodeGen/EarlyIfConversion.cpp
@@ -777,15 +777,13 @@ bool EarlyIfConverter::runOnMachineFunction(MachineFunction &MF) {
   DEBUG(dbgs() << "********** EARLY IF-CONVERSION **********\n"
                << "********** Function: " << MF.getName() << '\n');
   // Only run if conversion if the target wants it.
-  if (!MF.getTarget()
-           .getSubtarget<TargetSubtargetInfo>()
-           .enableEarlyIfConversion())
+  const TargetSubtargetInfo &STI = MF.getSubtarget();
+  if (!STI.enableEarlyIfConversion())
     return false;
 
-  TII = MF.getSubtarget().getInstrInfo();
-  TRI = MF.getSubtarget().getRegisterInfo();
-  SchedModel =
-    MF.getTarget().getSubtarget<TargetSubtargetInfo>().getSchedModel();
+  TII = STI.getInstrInfo();
+  TRI = STI.getRegisterInfo();
+  SchedModel = STI.getSchedModel();
   MRI = &MF.getRegInfo();
   DomTree = &getAnalysis<MachineDominatorTree>();
   Loops = getAnalysisIfAvailable<MachineLoopInfo>();
diff --git a/llvm/lib/CodeGen/IfConversion.cpp b/llvm/lib/CodeGen/IfConversion.cpp
index e84d25d9696..7a295699cae 100644
--- a/llvm/lib/CodeGen/IfConversion.cpp
+++ b/llvm/lib/CodeGen/IfConversion.cpp
@@ -271,15 +271,13 @@ INITIALIZE_PASS_DEPENDENCY(MachineBranchProbabilityInfo)
 INITIALIZE_PASS_END(IfConverter, "if-converter", "If Converter", false, false)
 
 bool IfConverter::runOnMachineFunction(MachineFunction &MF) {
-  TLI = MF.getSubtarget().getTargetLowering();
-  TII = MF.getSubtarget().getInstrInfo();
-  TRI = MF.getSubtarget().getRegisterInfo();
+  const TargetSubtargetInfo &ST = MF.getSubtarget();
+  TLI = ST.getTargetLowering();
+  TII = ST.getInstrInfo();
+  TRI = ST.getRegisterInfo();
   MBFI = &getAnalysis<MachineBlockFrequencyInfo>();
   MBPI = &getAnalysis<MachineBranchProbabilityInfo>();
   MRI = &MF.getRegInfo();
-
-  const TargetSubtargetInfo &ST =
-    MF.getTarget().getSubtarget<TargetSubtargetInfo>();
   SchedModel.init(ST.getSchedModel(), &ST, TII);
 
   if (!TII) return false;
@@ -290,7 +288,7 @@ bool IfConverter::runOnMachineFunction(MachineFunction &MF) {
   if (!PreRegAlloc) {
     // Tail merge tend to expose more if-conversion opportunities.
     BranchFolder BF(true, false, *MBFI, *MBPI);
-    BFChange = BF.OptimizeFunction(MF, TII, MF.getSubtarget().getRegisterInfo(),
+    BFChange = BF.OptimizeFunction(MF, TII, ST.getRegisterInfo(),
                                    getAnalysisIfAvailable<MachineModuleInfo>());
   }
 
diff --git a/llvm/lib/CodeGen/MachineCombiner.cpp b/llvm/lib/CodeGen/MachineCombiner.cpp
index 2931258172b..7f03a1772d7 100644
--- a/llvm/lib/CodeGen/MachineCombiner.cpp
+++ b/llvm/lib/CodeGen/MachineCombiner.cpp
@@ -406,8 +406,7 @@ bool MachineCombiner::combineInstructions(MachineBasicBlock *MBB) {
 }
 
 bool MachineCombiner::runOnMachineFunction(MachineFunction &MF) {
-  const TargetSubtargetInfo &STI =
-      MF.getTarget().getSubtarget<TargetSubtargetInfo>();
+  const TargetSubtargetInfo &STI = MF.getSubtarget();
   TII = STI.getInstrInfo();
   TRI = STI.getRegisterInfo();
   SchedModel = STI.getSchedModel();
diff --git a/llvm/lib/CodeGen/MachineScheduler.cpp b/llvm/lib/CodeGen/MachineScheduler.cpp
index a554254794a..89ac6a8e54d 100644
--- a/llvm/lib/CodeGen/MachineScheduler.cpp
+++ b/llvm/lib/CodeGen/MachineScheduler.cpp
@@ -336,9 +336,7 @@ bool PostMachineScheduler::runOnMachineFunction(MachineFunction &mf) {
   if (skipOptnoneFunction(*mf.getFunction()))
     return false;
 
-  const TargetSubtargetInfo &ST =
-    mf.getTarget().getSubtarget<TargetSubtargetInfo>();
-  if (!ST.enablePostMachineScheduler()) {
+  if (!mf.getSubtarget().enablePostMachineScheduler()) {
     DEBUG(dbgs() << "Subtarget disables post-MI-sched.\n");
     return false;
   }
diff --git a/llvm/lib/CodeGen/MachineTraceMetrics.cpp b/llvm/lib/CodeGen/MachineTraceMetrics.cpp
index 2cf87eb9104..8aacd1f31bb 100644
--- a/llvm/lib/CodeGen/MachineTraceMetrics.cpp
+++ b/llvm/lib/CodeGen/MachineTraceMetrics.cpp
@@ -52,12 +52,11 @@ void MachineTraceMetrics::getAnalysisUsage(AnalysisUsage &AU) const {
 
 bool MachineTraceMetrics::runOnMachineFunction(MachineFunction &Func) {
   MF = &Func;
-  TII = MF->getSubtarget().getInstrInfo();
-  TRI = MF->getSubtarget().getRegisterInfo();
+  const TargetSubtargetInfo &ST = MF->getSubtarget();
+  TII = ST.getInstrInfo();
+  TRI = ST.getRegisterInfo();
   MRI = &MF->getRegInfo();
   Loops = &getAnalysis<MachineLoopInfo>();
-  const TargetSubtargetInfo &ST =
-    MF->getTarget().getSubtarget<TargetSubtargetInfo>();
   SchedModel.init(ST.getSchedModel(), &ST, TII);
   BlockInfo.resize(MF->getNumBlockIDs());
   ProcResourceCycles.resize(MF->getNumBlockIDs() *
diff --git a/llvm/lib/CodeGen/PostRASchedulerList.cpp b/llvm/lib/CodeGen/PostRASchedulerList.cpp
index 89e1d113ff7..ad59fc9a407 100644
--- a/llvm/lib/CodeGen/PostRASchedulerList.cpp
+++ b/llvm/lib/CodeGen/PostRASchedulerList.cpp
@@ -282,9 +282,7 @@ bool PostRAScheduler::runOnMachineFunction(MachineFunction &Fn) {
   } else {
     // Check that post-RA scheduling is enabled for this target.
     // This may upgrade the AntiDepMode.
-    const TargetSubtargetInfo &ST =
-        Fn.getTarget().getSubtarget<TargetSubtargetInfo>();
-    if (!enablePostRAScheduler(ST, PassConfig->getOptLevel(),
+    if (!enablePostRAScheduler(Fn.getSubtarget(), PassConfig->getOptLevel(),
                                AntiDepMode, CriticalPathRCs))
       return false;
   }