commit fc6de428c8ab10330e1b00c6541503cfd98a9cca
author Eric Christopher <echristo@gmail.com> Tue Aug 05 02:39:49 2014 +0000
committer Eric Christopher <echristo@gmail.com> Tue Aug 05 02:39:49 2014 +0000
tree a2f2e256682f7ec9c6affef81490a88327f6844c
parent 5beccb22bc151a6711e28a893ed1446ccae7ba13

Have MachineFunction cache a pointer to the subtarget to make lookups
shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lookups from
the MachineFunction easily.

Update the MIPS subtarget switching machinery to update this pointer
at the same time it runs.

llvm-svn: 214838

llvm/lib/CodeGen/IfConversion.cpp

diff --git a/llvm/lib/CodeGen/IfConversion.cpp b/llvm/lib/CodeGen/IfConversion.cpp
index 5b6702b..79eb0fc 100644
--- a/llvm/lib/CodeGen/IfConversion.cpp
+++ b/llvm/lib/CodeGen/IfConversion.cpp
@@ -269,9 +269,9 @@
 INITIALIZE_PASS_END(IfConverter, "if-converter", "If Converter", false, false)
 
 bool IfConverter::runOnMachineFunction(MachineFunction &MF) {
-  TLI = MF.getTarget().getSubtargetImpl()->getTargetLowering();
-  TII = MF.getTarget().getSubtargetImpl()->getInstrInfo();
-  TRI = MF.getTarget().getSubtargetImpl()->getRegisterInfo();
+  TLI = MF.getSubtarget().getTargetLowering();
+  TII = MF.getSubtarget().getInstrInfo();
+  TRI = MF.getSubtarget().getRegisterInfo();
   MBPI = &getAnalysis<MachineBranchProbabilityInfo>();
   MRI = &MF.getRegInfo();
 
@@ -287,9 +287,8 @@
   if (!PreRegAlloc) {
     // Tail merge tend to expose more if-conversion opportunities.
     BranchFolder BF(true, false);
-    BFChange = BF.OptimizeFunction(
-        MF, TII, MF.getTarget().getSubtargetImpl()->getRegisterInfo(),
-        getAnalysisIfAvailable<MachineModuleInfo>());
+    BFChange = BF.OptimizeFunction(MF, TII, MF.getSubtarget().getRegisterInfo(),
+                                   getAnalysisIfAvailable<MachineModuleInfo>());
   }
 
   DEBUG(dbgs() << "\nIfcvt: function (" << ++FnNum <<  ") \'"
@@ -421,8 +420,7 @@
 
   if (MadeChange && IfCvtBranchFold) {
     BranchFolder BF(false, false);
-    BF.OptimizeFunction(MF, TII,
-                        MF.getTarget().getSubtargetImpl()->getRegisterInfo(),
+    BF.OptimizeFunction(MF, TII, MF.getSubtarget().getRegisterInfo(),
                         getAnalysisIfAvailable<MachineModuleInfo>());
   }