TargetMachine: Merge TargetMachine and LLVMTargetMachine

Merge LLVMTargetMachine into TargetMachine.

- There is no in-tree target anymore that just implements TargetMachine
  but not LLVMTargetMachine.
- It should still be possible to stub out all the various functions in
  case a target does not want to use lib/CodeGen
- This simplifies the code and avoids methods ending up in the wrong
  interface.

Differential Revision: https://reviews.llvm.org/D38489

llvm-svn: 315633
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
index 8ad74d9..ad779c1 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
@@ -69,11 +69,10 @@
     const Target &T, const Triple &TT, StringRef CPU, StringRef FS,
     const TargetOptions &Options, Optional<Reloc::Model> RM,
     Optional<CodeModel::Model> CM, CodeGenOpt::Level OL, bool JIT)
-    : LLVMTargetMachine(T,
-                        TT.isArch64Bit() ? "e-m:e-p:64:64-i64:64-n32:64-S128"
-                                         : "e-m:e-p:32:32-i64:64-n32:64-S128",
-                        TT, CPU, FS, Options, getEffectiveRelocModel(RM),
-                        CM ? *CM : CodeModel::Large, OL),
+    : TargetMachine(T, TT.isArch64Bit() ? "e-m:e-p:64:64-i64:64-n32:64-S128"
+                                        : "e-m:e-p:32:32-i64:64-n32:64-S128",
+                    TT, CPU, FS, Options, getEffectiveRelocModel(RM),
+                    CM ? *CM : CodeModel::Large, OL),
       TLOF(TT.isOSBinFormatELF() ?
               static_cast<TargetLoweringObjectFile*>(
                   new WebAssemblyTargetObjectFileELF()) :