(Re-landing) Expose a TargetMachine::getTargetTransformInfo function

Re-land r321234.  It had to be reverted because it broke the shared
library build.  The shared library build broke because there was a
missing LLVMBuild dependency from lib/Passes (which calls
TargetMachine::getTargetIRAnalysis) to lib/Target.  As far as I can
tell, this problem was always there but was somehow masked
before (perhaps because TargetMachine::getTargetIRAnalysis was a
virtual function).

Original commit message:

This makes the TargetMachine interface a bit simpler.  We still need
the std::function in TargetIRAnalysis to avoid having to add a
dependency from Analysis to Target.

See discussion:
http://lists.llvm.org/pipermail/llvm-dev/2017-December/119749.html

I avoided adding all of the backend owners to this review since the
change is simple, but let me know if you feel differently about this.

Reviewers: echristo, MatzeB, hfinkel

Reviewed By: hfinkel

Subscribers: jholewinski, jfb, arsenm, dschuff, mcrosier, sdardis, nemanjai, nhaehnle, javed.absar, sbc100, jgravelle-google, aheejin, kbarton, llvm-commits

Differential Revision: https://reviews.llvm.org/D41464

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@321375 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 4 insertions, 5 deletions

diff --git a/lib/Target/Lanai/LanaiTargetMachine.cpp b/lib/Target/Lanai/LanaiTargetMachine.cpp
index 9a73c95d651..2c21a53b13b 100644
--- a/lib/Target/Lanai/LanaiTargetMachine.cpp
+++ b/lib/Target/Lanai/LanaiTargetMachine.cpp
@@ -74,10 +74,9 @@ LanaiTargetMachine::LanaiTargetMachine(const Target &T, const Triple &TT,
   initAsmInfo();
 }
 
-TargetIRAnalysis LanaiTargetMachine::getTargetIRAnalysis() {
-  return TargetIRAnalysis([this](const Function &F) {
-    return TargetTransformInfo(LanaiTTIImpl(this, F));
-  });
+TargetTransformInfo
+LanaiTargetMachine::getTargetTransformInfo(const Function &F) {
+  return TargetTransformInfo(LanaiTTIImpl(this, F));
 }
 
 namespace {
diff --git a/lib/Target/Lanai/LanaiTargetMachine.h b/lib/Target/Lanai/LanaiTargetMachine.h
index 2fb1a053610..0db286ec13e 100644
--- a/lib/Target/Lanai/LanaiTargetMachine.h
+++ b/lib/Target/Lanai/LanaiTargetMachine.h
@@ -42,7 +42,7 @@ public:
     return &Subtarget;
   }
 
-  TargetIRAnalysis getTargetIRAnalysis() override;
+  TargetTransformInfo getTargetTransformInfo(const Function &F) override;
 
   // Pass Pipeline Configuration
   TargetPassConfig *createPassConfig(PassManagerBase &pass_manager) override;