[PATCH] Tests for coverage mapping

[Reid Kleckner]

================
Comment at: test/CoverageMapping/break.c:3
@@ +2,3 @@
+// RUN: %clang %s -fprofile-instr-generate -fcoverage-mapping -O2 -o %t/test
+// RUN: (cd %t; %t/test)
+// RUN: llvm-profdata merge %t/default.profraw -o %t/pgodata
----------------
I don't think we allow execution tests in Clang's internal test suite. Can this live in test-suite?

http://reviews.llvm.org/D4793