commit f86a3a1337d11937207cf0f51b0e002a3064440b
author Pirama Arumuga Nainar <pirama@google.com> Tue Nov 23 10:03:04 2021 -0800
committer Copybara-Service <copybara-worker@google.com> Tue Nov 23 10:16:11 2021 -0800
tree 8b47e01a60132a9f534fee1c69fa1f9c22e81fd6
parent c01d5ae52e934f7eb7072ec964b382a88aeaf294

[compiler-rt/profile] Include __llvm_profile_get_magic in module signature

The INSTR_PROF_RAW_MAGIC_* number in profraw files should match during
profile merging.  This causes an error with 32-bit and 64-bit variants
of the same code.  The module signatures for the two binaries are
identical but they use different INSTR_PROF_RAW_MAGIC_* causing a
failure when profile-merging is used.  Including it when computing the
module signature yields different signatures for the 32-bit and 64-bit
profiles.

Differential Revision: https://reviews.llvm.org/D114054

GitOrigin-RevId: 1df7289af66c630480a676e2a5347dca5a3ede15

lib/profile/InstrProfilingMerge.c

diff --git a/lib/profile/InstrProfilingMerge.c b/lib/profile/InstrProfilingMerge.c
index 674b189..80db252 100644
--- a/lib/profile/InstrProfilingMerge.c
+++ b/lib/profile/InstrProfilingMerge.c
@@ -34,7 +34,8 @@
   const __llvm_profile_data *FirstD = __llvm_profile_begin_data();
 
   return (NamesSize << 40) + (CounterSize << 30) + (DataSize << 20) +
-         (NumVnodes << 10) + (DataSize > 0 ? FirstD->NameRef : 0) + Version;
+         (NumVnodes << 10) + (DataSize > 0 ? FirstD->NameRef : 0) + Version +
+         __llvm_profile_get_magic();
 }
 
 /* Returns 1 if profile is not structurally compatible.  */