[gcc r12-7611] lto-plugin: Honor link_output_name for -foffload-objects file name

[Tobias Burnus]

https://gcc.gnu.org/g:db494fd68d12f3b49ad5f4747c234f3a94d10c72

commit r12-7611-gdb494fd68d12f3b49ad5f4747c234f3a94d10c72
Author: Tobias Burnus <tobias@codesourcery.com>
Date:   Fri Mar 11 13:02:00 2022 +0100

    lto-plugin: Honor link_output_name for -foffload-objects file name
    
    lto-plugin/ChangeLog:
    
            * lto-plugin.c (all_symbols_read_handler): With -save-temps, use
            link_output_name for -foffload-objects's file name, if available.

Diff:
---
 lto-plugin/lto-plugin.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lto-plugin/lto-plugin.c b/lto-plugin/lto-plugin.c
index 593fbc91383..33d49571d0e 100644
--- a/lto-plugin/lto-plugin.c
+++ b/lto-plugin/lto-plugin.c
@@ -799,8 +799,15 @@ all_symbols_read_handler (void)
       char *arg;
       char *offload_objects_file_name;
       struct plugin_offload_file *ofld;
+      const char *suffix = ".ofldlist";
 
-      offload_objects_file_name = make_temp_file (".ofldlist");
+      if (save_temps && link_output_name)
+	{
+	  suffix += skip_in_suffix;
+	  offload_objects_file_name = concat (link_output_name, suffix, NULL);
+	}
+      else
+	offload_objects_file_name = make_temp_file (suffix);
       check (offload_objects_file_name, LDPL_FATAL,
 	     "Failed to generate a temporary file name");
       f = fopen (offload_objects_file_name, "w");