[PGO] cc1 option name change for profile instrumentation

This patch changes cc1 option -fprofile-instr-generate to an enum option
-fprofile-instrument={clang|none}. It also changes cc1 options
-fprofile-instr-generate= to -fprofile-instrument-path=.
The driver level option -fprofile-instr-generate and -fprofile-instr-generate=
remain intact. This change will pave the way to integrate new PGO
instrumentation in IR level.

Review: http://reviews.llvm.org/D16730
llvm-svn: 259811
diff --git a/clang/test/CoverageMapping/nestedclass.cpp b/clang/test/CoverageMapping/nestedclass.cpp
index be4e0ba..6cbddeb 100644
--- a/clang/test/CoverageMapping/nestedclass.cpp
+++ b/clang/test/CoverageMapping/nestedclass.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fprofile-instr-generate -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name nestedclass.cpp %s > %tmapping
+// RUN: %clang_cc1 -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name nestedclass.cpp %s > %tmapping
 // RUN: FileCheck -input-file %tmapping %s --check-prefix=CHECK-OUTER
 // RUN: FileCheck -input-file %tmapping %s --check-prefix=CHECK-INNER
 // RUN: FileCheck -input-file %tmapping %s --check-prefix=CHECK-INNERMOST