Update the comments on default subtargets based on feedback.
llvm-svn: 309041
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.h b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
index be70550..81b5ef2 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.h
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
@@ -41,8 +41,9 @@
~PPCTargetMachine() override;
const PPCSubtarget *getSubtargetImpl(const Function &F) const override;
- // The no argument getSubtargetImpl, while it exists on some targets, is
- // deprecated and should not be used.
+ // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
+ // subtargets are per-function entities based on the target-specific
+ // attributes of each function.
const PPCSubtarget *getSubtargetImpl() const = delete;
// Pass Pipeline Configuration