Fix the ridiculous SubtargetFeatures API where it implicitly expects CPU name to

be the first encoded as the first feature. It then uses the CPU name to look up
features / scheduling itineray even though clients know full well the CPU name
being used to query these properties.

The fix is to just have the clients explictly pass the CPU name!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134127 91177308-0d34-0410-b5e6-96231b3b80d8

lib/MC/MCDisassembler/Disassembler.cpp

@@ -55,11 +55,13 @@ LLVMDisasmContextRef LLVMCreateDisasm(const char *TripleName, void *DisInfo,
 
   // Package up features to be passed to target/subtarget
   std::string FeaturesStr;
+  std::string CPU;
 
   // FIXME: We shouldn't need to do this (and link in codegen).
   //        When we split this out, we should do it in a way that makes
   //        it straightforward to switch subtargets on the fly.
-  TargetMachine *TM = TheTarget->createTargetMachine(TripleName, FeaturesStr);
+  TargetMachine *TM = TheTarget->createTargetMachine(TripleName, CPU,
+                                                     FeaturesStr);
   assert(TM && "Unable to create target machine!");
 
   // Get the target assembler info needed to setup the context.