[commmitted] amdgcn: Comment correction

[Andrew Stubbs <ams@baylibre.com>]

The location of the marker was changed, but the comment wasn't updated.
Fixed now.

Committed to mainline

gcc/ChangeLog:

	* config/gcn/gcn.cc (gcn_expand_builtin_1): Comment correction.
---
 gcc/config/gcn/gcn.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/config/gcn/gcn.cc b/gcc/config/gcn/gcn.cc
index bc076d1120d..fca001811e5 100644
--- a/gcc/config/gcn/gcn.cc
+++ b/gcc/config/gcn/gcn.cc
@@ -4932,8 +4932,8 @@ gcn_expand_builtin_1 (tree exp, rtx target, rtx /*subtarget */ ,
       }
     case GCN_BUILTIN_FIRST_CALL_THIS_THREAD_P:
       {
-	/* Stash a marker in the unused upper 16 bits of s[0:1] to indicate
-	   whether it was the first call.  */
+	/* Stash a marker in the unused upper 16 bits of QUEUE_PTR_ARG to
+	   indicate whether it was the first call.  */
 	rtx result = gen_reg_rtx (BImode);
 	emit_move_insn (result, const0_rtx);
 	if (cfun->machine->args.reg[QUEUE_PTR_ARG] >= 0)
-- 
2.41.0