Remove the TargetMachine forwards for TargetSubtargetInfo based
information and update all callers. No functional change.

llvm-svn: 214781
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 094dce1..cb9e13c 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -6706,7 +6706,10 @@
   // FADD -> FMA combines:
   if ((DAG.getTarget().Options.AllowFPOpFusion == FPOpFusion::Fast ||
        DAG.getTarget().Options.UnsafeFPMath) &&
-      DAG.getTarget().getTargetLowering()->isFMAFasterThanFMulAndFAdd(VT) &&
+      DAG.getTarget()
+          .getSubtargetImpl()
+          ->getTargetLowering()
+          ->isFMAFasterThanFMulAndFAdd(VT) &&
       (!LegalOperations || TLI.isOperationLegalOrCustom(ISD::FMA, VT))) {
 
     // fold (fadd (fmul x, y), z) -> (fma x, y, z)
@@ -6783,7 +6786,10 @@
   // FSUB -> FMA combines:
   if ((DAG.getTarget().Options.AllowFPOpFusion == FPOpFusion::Fast ||
        DAG.getTarget().Options.UnsafeFPMath) &&
-      DAG.getTarget().getTargetLowering()->isFMAFasterThanFMulAndFAdd(VT) &&
+      DAG.getTarget()
+          .getSubtargetImpl()
+          ->getTargetLowering()
+          ->isFMAFasterThanFMulAndFAdd(VT) &&
       (!LegalOperations || TLI.isOperationLegalOrCustom(ISD::FMA, VT))) {
 
     // fold (fsub (fmul x, y), z) -> (fma x, y, (fneg z))
@@ -8400,7 +8406,8 @@
 
     // At this point, we know that we perform a cross-register-bank copy.
     // Check if it is expensive.
-    const TargetRegisterInfo *TRI = TLI.getTargetMachine().getRegisterInfo();
+    const TargetRegisterInfo *TRI =
+        TLI.getTargetMachine().getSubtargetImpl()->getRegisterInfo();
     // Assume bitcasts are cheap, unless both register classes do not
     // explicitly share a common sub class.
     if (!TRI || TRI->getCommonSubClass(ArgRC, ResRC))