[PM] Switch the TargetMachine interface from accepting a pass manager

base which it adds a single analysis pass to, to instead return the type
erased TargetTransformInfo object constructed for that TargetMachine.

This removes all of the pass variants for TTI. There is now a single TTI
*pass* in the Analysis layer. All of the Analysis <-> Target
communication is through the TTI's type erased interface itself. While
the diff is large here, it is nothing more that code motion to make
types available in a header file for use in a different source file
within each target.

I've tried to keep all the doxygen comments and file boilerplate in line
with this move, but let me know if I missed anything.

With this in place, the next step to making TTI work with the new pass
manager is to introduce a really simple new-style analysis that produces
a TTI object via a callback into this routine on the target machine.
Once we have that, we'll have the building blocks necessary to accept
a function argument as well.

llvm-svn: 227685

1 files changed, 3 insertions, 2 deletions

diff --git a/llvm/lib/Target/ARM/ARMTargetMachine.cpp b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
index 3f919147904..008b4773c6d 100644
--- a/llvm/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
@@ -14,6 +14,7 @@
 #include "ARMFrameLowering.h"
 #include "ARMTargetMachine.h"
 #include "ARMTargetObjectFile.h"
+#include "ARMTargetTransformInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/MC/MCAsmInfo.h"
@@ -215,8 +216,8 @@ ARMBaseTargetMachine::getSubtargetImpl(const Function &F) const {
   return I.get();
 }
 
-void ARMBaseTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
-  PM.add(createARMTargetTransformInfoPass(this));
+TargetTransformInfo ARMBaseTargetMachine::getTTI() {
+  return TargetTransformInfo(ARMTTIImpl(this));
 }