[gcc/devel/omp/gcc-12] nvptx: Silence unused variable warning in output_constant_pool_contents()

[Tobias Burnus]

https://gcc.gnu.org/g:8d2253f407e73013cb6b7b045c120d4acf35bdc5

commit 8d2253f407e73013cb6b7b045c120d4acf35bdc5
Author: Jan-Benedict Glaw <jbglaw@lug-owl.de>
Date:   Mon Sep 5 09:40:30 2022 +0200

    nvptx: Silence unused variable warning in output_constant_pool_contents()
    
    Similar to the rs6000 code, nvptx defines ASM_OUTPUT_DEF_FROM_DECLS as well as
    ASM_OUTPUT_DEF. Make sure that the define's parameters are used by referencing
    them as (void) to silence a warning in output_constant_pool_contents().
    
    2022-09-30  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
    
    gcc/
            * config/nvptx/nvptx.h (ASM_OUTPUT_DEF): Reference macro arguments.
    
    (cherry picked from commit 08de065293f8b08158e1089fbacce9dbaba95077)

Diff:
---
 gcc/ChangeLog.omp        | 7 +++++++
 gcc/config/nvptx/nvptx.h | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/gcc/ChangeLog.omp b/gcc/ChangeLog.omp
index 08177cdd444..47babd06e63 100644
--- a/gcc/ChangeLog.omp
+++ b/gcc/ChangeLog.omp
@@ -1,3 +1,10 @@
+2022-09-05  Tobias Burnus  <tobias@codesourcery.com>
+
+	Backport from mainline:
+	2022-09-30  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
+
+	* config/nvptx/nvptx.h (ASM_OUTPUT_DEF): Reference macro arguments.
+
 2022-09-05  Tobias Burnus  <tobias@codesourcery.com>
 
 	Backport from mainline:
diff --git a/gcc/config/nvptx/nvptx.h b/gcc/config/nvptx/nvptx.h
index ed72c253191..71297440566 100644
--- a/gcc/config/nvptx/nvptx.h
+++ b/gcc/config/nvptx/nvptx.h
@@ -321,6 +321,9 @@ struct GTY(()) machine_function
 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)	\
   do						\
     {						\
+      (void) (FILE);				\
+      (void) (LABEL1);				\
+      (void) (LABEL2);				\
       gcc_unreachable ();			\
     }						\
   while (0)