Apply temporary fix for PR rtl-optimization/79150.

gcc/
	PR rtl-optimization/79150
	* config/mips/mips.c (mips_block_move_loop): Emit a NOP after the
	conditional jump, if the jump is the last insn of the loop.

From-SVN: r246320

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 81a27f9..ff2cd7a 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-03-21  Toma Tabacu  <toma.tabacu@imgtec.com>
+
+       PR rtl-optimization/79150
+       * config/mips/mips.c (mips_block_move_loop): Emit a NOP after the
+       conditional jump, if the jump is the last insn of the loop.
+
 2017-03-21  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
             Richard Biener  <rguenth@suse.com>
 

diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 7778207..d1deb52 100644 (file)
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -8098,6 +8098,9 @@ mips_block_move_loop (rtx dest, rtx src, HOST_WIDE_INT length,
   /* Mop up any left-over bytes.  */
   if (leftover)
     mips_block_move_straight (dest, src, leftover);
+  else
+    /* Temporary fix for PR79150.  */
+    emit_insn (gen_nop ());
 }
 
 /* Expand a movmemsi instruction, which copies LENGTH bytes from