X86: Register the X86CallFrameOptimization pass

Summary:
The motivation of this change is to enable .mir testing for this pass.
Added one test case to cover the functionality, this same case will be improved by
a future patch.

Reviewers: igorb, guyblank, DavidKreitzer

Reviewed By: guyblank, DavidKreitzer

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D38729

llvm-svn: 316412
diff --git a/llvm/lib/Target/X86/X86TargetMachine.cpp b/llvm/lib/Target/X86/X86TargetMachine.cpp
index 1c5f2a2..6e6c724 100644
--- a/llvm/lib/Target/X86/X86TargetMachine.cpp
+++ b/llvm/lib/Target/X86/X86TargetMachine.cpp
@@ -58,6 +58,7 @@
 
 void initializeWinEHStatePassPass(PassRegistry &);
 void initializeFixupLEAPassPass(PassRegistry &);
+void initializeX86CallFrameOptimizationPass(PassRegistry &);
 void initializeX86CmovConverterPassPass(PassRegistry &);
 void initializeX86ExecutionDepsFixPass(PassRegistry &);
 void initializeX86DomainReassignmentPass(PassRegistry &);
@@ -75,6 +76,7 @@
   initializeFixupBWInstPassPass(PR);
   initializeEvexToVexInstPassPass(PR);
   initializeFixupLEAPassPass(PR);
+  initializeX86CallFrameOptimizationPass(PR);
   initializeX86CmovConverterPassPass(PR);
   initializeX86ExecutionDepsFixPass(PR);
   initializeX86DomainReassignmentPass(PR);