[Patch] nvptx/mkoffload.cc: Fix "$nohost" check

[Tobias Burnus <tobias@codesourcery.com>]

[-- Attachment #1: Type: text/plain, Size: 557 bytes --]

Found when working on real reverse offload - as
the reverse-offload stub function was added to the reverse-offload table.
Reason - as mentioned in the commit log: lhd_set_decl_assembler_name.

I intent to commit it tomorrow as obvious, unless there are further
comments.

Tobias
-----------------
Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, 80634 München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: Thomas Heurung, Frank Thürauf; Sitz der Gesellschaft: München; Registergericht München, HRB 106955

[-- Attachment #2: fix-nvptx-rev-off.diff --]
[-- Type: text/x-patch, Size: 1790 bytes --]

nvptx/mkoffload.cc: Fix "$nohost" check

If lhd_set_decl_assembler_name is invoked - in particular if
!TREE_PUBLIC (decl) && !DECL_FILE_SCOPE_P (decl) - the '.nohost' suffix
might change to '.nohost.2'. This happens for the existing reverse offload
testcases via cgraph_node::analyze and is a side effect of
r13-3455-g178ac530fe67e4f2fc439cc4ce89bc19d571ca31 for some reason.

The solution is to not only check for a tailing '$nohost' but also for
'$nohost$' in nvptx/mkoffload.cc.

gcc/ChangeLog:

	* config/nvptx/mkoffload.cc (process): Recognize '$nohost$...'
	besides tailing '$nohost' as being for reverse offload.

 gcc/config/nvptx/mkoffload.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/config/nvptx/mkoffload.cc b/gcc/config/nvptx/mkoffload.cc
index 854cd72f3c7..5d89ba8a788 100644
--- a/gcc/config/nvptx/mkoffload.cc
+++ b/gcc/config/nvptx/mkoffload.cc
@@ -364,7 +364,8 @@ process (FILE *in, FILE *out, uint32_t omp_requires)
 	     Alternatively, besides searching for 'BEGIN FUNCTION DECL',
 	     checking for '.visible .entry ' + id->ptx_name would be
 	     required.  */
-	  if (!endswith (id->ptx_name, "$nohost"))
+	  if (!endswith (id->ptx_name, "$nohost")
+	      && !strstr (id->ptx_name, "$nohost$"))
 	    continue;
 	  fprintf (out, "\t\".extern ");
 	  const char *p = input + file_idx[fidx];
@@ -402,7 +403,8 @@ process (FILE *in, FILE *out, uint32_t omp_requires)
 		    "$offload_func_table[] = {");
       for (comma = "", id = func_ids; id; comma = ",", id = id->next)
 	fprintf (out, "%s\"\n\t\t\"%s", comma,
-		 endswith (id->ptx_name, "$nohost") ? id->ptx_name : "0");
+		 (endswith (id->ptx_name, "$nohost")
+		  || strstr (id->ptx_name, "$nohost$")) ? id->ptx_name : "0");
       fprintf (out, "};\\n\";\n\n");
     }