xtensa: Fix PR target/78603

2016-11-29 Max Filippov <jcmvbkbc@gmail.com> gcc/ * config/xtensa/xtensa.c (hwloop_optimize): Don't emit zero overhead loop start between a call and its CALL_ARG_LOCATION note. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242979 138bc75d-0d04-0410-961f-82ee72b054a4
gcc-mirror · Nov 29, 2016 · ca7dda2 · ca7dda2
1 parent 43ef330
commit ca7dda2
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diff --git a/gcc/ChangeLog b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2016-11-29  Max Filippov  <jcmvbkbc@gmail.com>
+
+	PR target/78603
+	* config/xtensa/xtensa.c (hwloop_optimize): Don't emit zero
+	overhead loop start between a call and its CALL_ARG_LOCATION
+	note.
+
 2016-11-29  Waldemar Brodkorb  <wbx@openadk.org>
 
 	* config/bfin/linux.h (CPP_SPEC): Define.

diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
@@ -4167,7 +4167,10 @@ hwloop_optimize (hwloop_info loop)
       entry_after = BB_END (entry_bb);
       while (DEBUG_INSN_P (entry_after)
              || (NOTE_P (entry_after)
-                 && NOTE_KIND (entry_after) != NOTE_INSN_BASIC_BLOCK))
+                 && NOTE_KIND (entry_after) != NOTE_INSN_BASIC_BLOCK
+		 /* Make sure we don't split a call and its corresponding
+		    CALL_ARG_LOCATION note.  */
+                 && NOTE_KIND (entry_after) != NOTE_INSN_CALL_ARG_LOCATION))
         entry_after = PREV_INSN (entry_after);
 
       emit_insn_after (seq, entry_after);