[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, 17 insertions, 13 deletions

diff --git a/llvm/lib/Analysis/TargetTransformInfo.cpp b/llvm/lib/Analysis/TargetTransformInfo.cpp
index cdbce0d..a78d1db 100644
--- a/llvm/lib/Analysis/TargetTransformInfo.cpp
+++ b/llvm/lib/Analysis/TargetTransformInfo.cpp
@@ -21,6 +21,20 @@ using namespace llvm;
 
 #define DEBUG_TYPE "tti"
 
+namespace {
+/// \brief No-op implementation of the TTI interface using the utility base
+/// classes.
+///
+/// This is used when no target specific information is available.
+struct NoTTIImpl : TargetTransformInfoImplCRTPBase<NoTTIImpl> {
+  explicit NoTTIImpl(const DataLayout *DL)
+      : TargetTransformInfoImplCRTPBase<NoTTIImpl>(DL) {}
+};
+}
+
+TargetTransformInfo::TargetTransformInfo(const DataLayout *DL)
+    : TTIImpl(new Model<NoTTIImpl>(NoTTIImpl(DL))) {}
+
 TargetTransformInfo::~TargetTransformInfo() {}
 
 TargetTransformInfo::TargetTransformInfo(TargetTransformInfo &&Arg)
@@ -241,17 +255,6 @@ Value *TargetTransformInfo::getOrCreateResultFromMemIntrinsic(
 
 TargetTransformInfo::Concept::~Concept() {}
 
-namespace {
-/// \brief No-op implementation of the TTI interface using the utility base
-/// classes.
-///
-/// This is used when no target specific information is available.
-struct NoTTIImpl : TargetTransformInfoImplCRTPBase<NoTTIImpl> {
-  explicit NoTTIImpl(const DataLayout *DL)
-      : TargetTransformInfoImplCRTPBase<NoTTIImpl>(DL) {}
-};
-}
-
 // Register the basic pass.
 INITIALIZE_PASS(TargetTransformInfoWrapperPass, "tti",
                 "Target Transform Information", false, true)
@@ -272,6 +275,7 @@ TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass(
       *PassRegistry::getPassRegistry());
 }
 
-ImmutablePass *llvm::createNoTargetTransformInfoPass(const DataLayout *DL) {
-  return new TargetTransformInfoWrapperPass(NoTTIImpl(DL));
+ImmutablePass *
+llvm::createTargetTransformInfoWrapperPass(TargetTransformInfo TTI) {
+  return new TargetTransformInfoWrapperPass(std::move(TTI));
 }