[gcc(refs/users/ppalka/heads/libstdcxx-constrained-algos)] Remove dead variable.

[Patrick Palka]

https://gcc.gnu.org/g:56e2cc43de6e47312c186398c35732b890de0049

commit 56e2cc43de6e47312c186398c35732b890de0049
Author: Martin Liska <mliska@suse.cz>
Date:   Tue Jan 21 15:53:34 2020 +0100

    Remove dead variable.
    
    	* config/rs6000/rs6000.c (common_mode_defined): Remove
    	unused variable.

Diff:
---
 gcc/ChangeLog              | 5 +++++
 gcc/config/rs6000/rs6000.c | 3 ---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 073fc2e..48c423a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-01-21  Martin Liska  <mliska@suse.cz>
+
+	* config/rs6000/rs6000.c (common_mode_defined): Remove
+	unused variable.
+
 2020-01-21  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/92328
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 9405816..fc36bb6 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -101,9 +101,6 @@
 /* Support targetm.vectorize.builtin_mask_for_load.  */
 GTY(()) tree altivec_builtin_mask_for_load;
 
-/* Set to nonzero once AIX common-mode calls have been defined.  */
-static GTY(()) int common_mode_defined;
-
 #ifdef USING_ELFOS_H
 /* Counter for labels which are to be placed in .fixup.  */
 int fixuplabelno = 0;