tree 688aff18aee71eadffdfd863a6043a4eba9522e1
parent f706e8708e8285307e029429611532eb7ec211ef
author Wael Yehia <wyehia@ca.ibm.com> 1666282055 +0000
committer Copybara-Service <copybara-worker@google.com> 1666370191 -0700

[PGO][AIX] Improve dummy var retention and allow -bcdtors:csect linking.

1) Use a static array of pointer to retain the dummy vars.
2) Associate liveness of the array with that of the runtime hook variable
   __llvm_profile_runtime.
3) Perform the runtime initialization through the runtime hook variable.
4) Preserve the runtime hook variable using the -u linker flag.

Reviewed By: hubert.reinterpretcast

Differential Revision: https://reviews.llvm.org/D136192

GitOrigin-RevId: 461a1836d3d77371bb6271fefd645897997a22b8