[patch committed SH] Fix PR target/62261

[Kaz Kojima]

I've applied the attached patch to fix PR target/62261
which is a sh64 specific 4.9/5 regression.
The patch handles negative shift counts at some shift
paterns for shmedia.  Tested sh64-elf and sh4-unknown-linux-gnu
with no new failures.  I'll backport it to 4.9 in a weak
or two.

Regards,
        kaz
--
2014-08-27  Kaz Kojima  <kkoj...@gcc.gnu.org>

        PR target/62261
        * config/sh/sh.md (ashlsi3): Handle negative shift count for
        TARGET_SHMEDIA.
        (ashldi3, ashrsi3, ashrdi3, lshrsi3, lshrdi3): Likewise.

--- ORIG/trunk/gcc/config/sh/sh.md      2014-07-03 09:10:37.000000000 +0900
+++ trunk/gcc/config/sh/sh.md   2014-08-20 12:03:03.540859362 +0900
@@ -4579,6 +4579,12 @@ label:
 {
   if (TARGET_SHMEDIA)
     {
+       if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) < 0)
+       {
+         operands[2] = GEN_INT (-INTVAL (operands[2]));
+         emit_insn (gen_ashrsi3_media (operands[0], operands[1], operands[2]));
+         DONE;
+       }
       emit_insn (gen_ashlsi3_media (operands[0], operands[1], operands[2]));
       DONE;
     }
@@ -4819,6 +4825,12 @@ label:
 {
   if (TARGET_SHMEDIA)
     {
+       if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) < 0)
+       {
+         operands[2] = GEN_INT (-INTVAL (operands[2]));
+         emit_insn (gen_ashrdi3_media (operands[0], operands[1], operands[2]));
+         DONE;
+       }
       emit_insn (gen_ashldi3_media (operands[0], operands[1], operands[2]));
       DONE;
     }
@@ -4912,6 +4924,12 @@ label:
 {
   if (TARGET_SHMEDIA)
     {
+      if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) < 0)
+       {
+         operands[2] = GEN_INT (-INTVAL (operands[2]));
+         emit_insn (gen_ashlsi3_media (operands[0], operands[1], operands[2]));
+         DONE;
+       }
       emit_insn (gen_ashrsi3_media (operands[0], operands[1], operands[2]));
       DONE;
     }
@@ -5011,6 +5029,12 @@ label:
 {
   if (TARGET_SHMEDIA)
     {
+      if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) < 0)
+       {
+         operands[2] = GEN_INT (-INTVAL (operands[2]));
+         emit_insn (gen_ashldi3_media (operands[0], operands[1], operands[2]));
+         DONE;
+       }
       emit_insn (gen_ashrdi3_media (operands[0], operands[1], operands[2]));
       DONE;
     }
@@ -5085,6 +5109,12 @@ label:
 {
   if (TARGET_SHMEDIA)
     {
+      if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) < 0)
+       {
+         operands[2] = GEN_INT (-INTVAL (operands[2]));
+         emit_insn (gen_ashlsi3_media (operands[0], operands[1], operands[2]));
+         DONE;
+       }
       emit_insn (gen_lshrsi3_media (operands[0], operands[1], operands[2]));
       DONE;
     }
@@ -5279,6 +5309,12 @@ label:
 {
   if (TARGET_SHMEDIA)
     {
+      if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) < 0)
+       {
+         operands[2] = GEN_INT (-INTVAL (operands[2]));
+         emit_insn (gen_ashldi3_media (operands[0], operands[1], operands[2]));
+         DONE;
+       }
       emit_insn (gen_lshrdi3_media (operands[0], operands[1], operands[2]));
       DONE;
     }