[PGO] Add runtime hook so that IR instrumentation can override version
IR level instrumentation needs to override version with variant bits.
No change for FE instrumentation is needed. Test case is added to
detect version mismatch.
llvm-svn: 257230
diff --git a/compiler-rt/lib/profile/InstrProfilingFile.c b/compiler-rt/lib/profile/InstrProfilingFile.c
index bf50c02..98d85d9 100644
--- a/compiler-rt/lib/profile/InstrProfilingFile.c
+++ b/compiler-rt/lib/profile/InstrProfilingFile.c
@@ -214,6 +214,15 @@
return -1;
}
+ /* Check if there is llvm/runtime versino mismatch. */
+ if (GET_VERSION(__llvm_profile_get_version()) != INSTR_PROF_RAW_VERSION) {
+ PROF_ERR("LLVM Profile: runtime and instrumentation version mismatch : "
+ "expected %d, but get %d\n",
+ INSTR_PROF_RAW_VERSION,
+ (int)GET_VERSION(__llvm_profile_get_version()));
+ return -1;
+ }
+
/* Write the file. */
rc = writeFileWithName(__llvm_profile_CurrentFilename);
if (rc)