Remove the target independent TargetMachine::getSubtarget and

TargetMachine::getSubtargetImpl routines.

This keeps the target independent code free of bare subtarget
calls while the remainder of the backends are migrated, or not
if they don't wish to support per-function subtargets as would
be needed for function multiversioning or LTO of disparate
cpu subarchitecture types, e.g.

clang -msse4.2 -c foo.c -emit-llvm -o foo.bc
clang -c bar.c -emit-llvm -o bar.bc
llvm-link foo.bc bar.bc -o baz.bc
llc baz.bc

and get appropriate code for what the command lines requested.

llvm-svn: 232885

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/Target/SystemZ/SystemZTargetMachine.h b/llvm/lib/Target/SystemZ/SystemZTargetMachine.h
index 7d8dce77a63..181b92640e7 100644
--- a/llvm/lib/Target/SystemZ/SystemZTargetMachine.h
+++ b/llvm/lib/Target/SystemZ/SystemZTargetMachine.h
@@ -33,7 +33,8 @@ public:
                        CodeGenOpt::Level OL);
   ~SystemZTargetMachine() override;
 
-  const SystemZSubtarget *getSubtargetImpl() const override {
+  const SystemZSubtarget *getSubtargetImpl() const { return &Subtarget; }
+  const SystemZSubtarget *getSubtargetImpl(const Function &) const override {
     return &Subtarget;
   }
   // Override LLVMTargetMachine