svn commit: r361755 - in stable: 11/lib/clang/include/clang/Config 12/lib/clang/include/clang/Config

[Dimitry Andric]

Author: dim
Date: Wed Jun  3 16:51:30 2020
New Revision: 361755
URL: https://svnweb.freebsd.org/changeset/base/361755

Log:
  Disable clang's -fintegrated-cc1 stage by default
  
  In bug 246630, it was found that part of the rescue binary could be
  compiled to very slightly different (but still equivalent) machine code,
  depending on the number of simultaneous make jobs (via the -j option).
  
  This turned out to be caused by the upstream change that made clang's
  first stage compiler (i.e. the -cc1 stage) run as part of the initial
  clang process invocation, instead of forking and exec'ing a new clang
  process.
  
  We are currently investigating the root cause for the difference in
  output, but while that is ongoing, disable the integrated cc1 stage for
  now to work around it. You can always turn it on explicitly by using the
  -fintegrated-cc1 option, or turn it off with -fno-integrated-cc1.
  
  Direct commit to stable/{11,12}, so this can hopefully end up in the
  upcoming 11.4-RELEASE.
  
  Reported by:	Fabian Keil <fk at fabiankeil.de>
  PR:		246630

Modified:
  stable/11/lib/clang/include/clang/Config/config.h

Changes in other areas also in this revision:
Modified:
  stable/12/lib/clang/include/clang/Config/config.h

Modified: stable/11/lib/clang/include/clang/Config/config.h
==============================================================================
--- stable/11/lib/clang/include/clang/Config/config.h	Wed Jun  3 16:38:16 2020	(r361754)
+++ stable/11/lib/clang/include/clang/Config/config.h	Wed Jun  3 16:51:30 2020	(r361755)
@@ -82,6 +82,6 @@
 /* #undef CLANG_ENABLE_STATIC_ANALYZER */
 
 /* Spawn a new process clang.exe for the CC1 tool invocation, when necessary */
-#define CLANG_SPAWN_CC1 0
+#define CLANG_SPAWN_CC1 1
 
 #endif