[PATCH] [Profile] compiler-rt support for setting profile output from command line

[David]

================
Comment at: lib/profile/InstrProfiling.h:90
@@ +89,3 @@
+ */
+void __llvm_profile_set_filename_env_override(const char *Name);
+
----------------
Is it better to merge this interface with the previous one but with an additional parameter ?

================
Comment at: lib/profile/InstrProfilingFile.c:187
@@ -169,2 +186,3 @@
 __attribute__((visibility("hidden")))
 void __llvm_profile_set_filename(const char *Filename) {
+  setFilenamePossiblyWithPid(Filename);
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The behavior of this interface changes (improves) slightly. Is this intended?

http://reviews.llvm.org/D9323

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