Define away PROF_ERR etc.

Simplifies uses a bit.

Author: efriedma-quic

compiler-rt/lib/profile/InstrProfilingMerge.c

@@ -130,11 +130,9 @@ COMPILER_RT_VISIBILITY
 int __llvm_profile_merge_from_buffer(const char *ProfileData,
                                      uint64_t ProfileSize) {
   if (__llvm_profile_get_version() & VARIANT_MASK_TEMPORAL_PROF) {
-#ifndef COMPILER_RT_PROFILE_BAREMETAL
     PROF_ERR("%s\n",
              "Temporal profiles do not support profile merging at runtime. "
              "Instead, merge raw profiles using the llvm-profdata tool.");
-#endif
     return 1;
   }
 

compiler-rt/lib/profile/InstrProfilingPort.h

@@ -122,6 +122,12 @@ static inline size_t getpagesize(void) {
 #endif
 #endif /* defined(_WIN32) */
 
+#ifdef COMPILER_RT_PROFILE_BAREMETAL
+// Baremetal doesn't support logging
+#define PROF_ERR(Format, ...)
+#define PROF_WARN(Format, ...)
+#define PROF_NOTE(Format, ...)
+#else
 #define PROF_ERR(Format, ...)                                                  \
   fprintf(stderr, "LLVM Profile Error: " Format, __VA_ARGS__);
 
@@ -130,6 +136,7 @@ static inline size_t getpagesize(void) {
 
 #define PROF_NOTE(Format, ...)                                                 \
   fprintf(stderr, "LLVM Profile Note: " Format, __VA_ARGS__);
+#endif /* COMPILER_RT_PROFILE_BAREMETAL */
 
 #ifndef MAP_FILE
 #define MAP_FILE 0