PR target/43744

	* config/sh/sh.c (find_barrier): Don't emit a constant pool
	in the middle of insns for casesi_worker_2.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158655 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3d3aac0..3d8c5b0 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2010-04-22  Kaz Kojima  <kkojima@gcc.gnu.org>
+
+       PR target/43744
+       * config/sh/sh.c (find_barrier): Don't emit a constant pool
+       in the middle of insns for casesi_worker_2.
+
 2010-04-22  David Edelsohn  <edelsohn@gnu.org>
 
        * config/rs6000/x-aix: Override LDFLAGS for all COMPILERS.

diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c
index 04b98c1..a3084b9 100644 (file)
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@@ -4410,6 +4410,7 @@ find_barrier (int num_mova, rtx mova, rtx from)
   int hi_limit;
   rtx orig = from;
   rtx last_got = NULL_RTX;
+  rtx last_symoff = NULL_RTX;
 
   /* For HImode: range is 510, add 4 because pc counts from address of
      second instruction after this one, subtract 2 for the jump instruction
@@ -4551,6 +4552,16 @@ find_barrier (int num_mova, rtx mova, rtx from)
        {
          switch (untangle_mova (&num_mova, &mova, from))
            {
+             case 1:
+               if (flag_pic)
+                 {
+                   rtx src = SET_SRC (PATTERN (from));
+                   if (GET_CODE (src) == CONST
+                       && GET_CODE (XEXP (src, 0)) == UNSPEC
+                       && XINT (XEXP (src, 0), 1) == UNSPEC_SYMOFF)
+                     last_symoff = from;
+                 }
+               break;
              case 0:   return find_barrier (0, 0, mova);
              case 2:
                {
@@ -4654,6 +4665,12 @@ find_barrier (int num_mova, rtx mova, rtx from)
         so we'll make one.  */
       rtx label = gen_label_rtx ();
 
+      /* Don't emit a constant table in the middle of insns for
+        casesi_worker_2.  This is a bit overkill but is enough
+        because casesi_worker_2 wouldn't appear so frequently.  */
+      if (last_symoff)
+       from = last_symoff;
+
       /* If we exceeded the range, then we must back up over the last
         instruction we looked at.  Otherwise, we just need to undo the
         NEXT_INSN at the end of the loop.  */