(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

llvm-svn: 321375

2 files changed, 4 insertions, 5 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index 491f25ca2c6..20a83c97302 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -451,8 +451,7 @@ void PPCPassConfig::addPreEmitPass() {
   addPass(createPPCBranchSelectionPass(), false);
 }
 
-TargetIRAnalysis PPCTargetMachine::getTargetIRAnalysis() {
-  return TargetIRAnalysis([this](const Function &F) {
-    return TargetTransformInfo(PPCTTIImpl(this, F));
-  });
+TargetTransformInfo
+PPCTargetMachine::getTargetTransformInfo(const Function &F) {
+  return TargetTransformInfo(PPCTTIImpl(this, F));
 }
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.h b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
index 102bf7ca59c..75b98a815ab 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.h
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
@@ -49,7 +49,7 @@ public:
   // Pass Pipeline Configuration
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
 
-  TargetIRAnalysis getTargetIRAnalysis() override;
+  TargetTransformInfo getTargetTransformInfo(const Function &F) override;
 
   TargetLoweringObjectFile *getObjFileLowering() const override {
     return TLOF.get();