re PR target/51050 ([AVR, attiny26] ICE: invalid rtl sharing found in the insn)

	PR target/51050
	* config/avr/avr.c (expand_epilogue): Don't build SUBREG of fp.
	(avr_prologue_setup_frame): Ditto.

From-SVN: r182363

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 40c96462f57e16b2084af85cce210dea1606bb67..a12190f0ad264c375653f0da5818fc99a8823d38 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-12-15  Georg-Johann Lay  <avr@gjlay.de>
+
+       PR target/51050
+       * config/avr/avr.c (expand_epilogue): Don't build SUBREG of fp.
+       (avr_prologue_setup_frame): Ditto.
+
 2011-12-15  Jakub Jelinek  <jakub@redhat.com>
 
        PR debug/51517

diff --git a/gcc/config/avr/avr.c b/gcc/config/avr/avr.c
index af32551fd3714f0f6f109272cfb03ad47574b065..367e76bf3ac3fb5c661d79f4061ff98d66d863a2 100644 (file)
--- a/gcc/config/avr/avr.c
+++ b/gcc/config/avr/avr.c
@@ -994,7 +994,7 @@ avr_prologue_setup_frame (HOST_WIDE_INT size, HARD_REG_SET set)
               /* The high byte (r29) does not change:
                  Prefer SUBI (1 cycle) over ABIW (2 cycles, same size).  */
 
-              my_fp = simplify_gen_subreg (QImode, fp, Pmode, 0);
+              my_fp = all_regs_rtx[FRAME_POINTER_REGNUM];
             }
 
           /************  Method 1: Adjust frame pointer  ************/
@@ -1292,7 +1292,7 @@ expand_epilogue (bool sibcall_p)
           /* The high byte (r29) does not change:
              Prefer SUBI (1 cycle) over SBIW (2 cycles).  */
                   
-          my_fp = simplify_gen_subreg (QImode, fp, Pmode, 0);
+          my_fp = all_regs_rtx[FRAME_POINTER_REGNUM];
         }
               
       /********** Method 1: Adjust fp register  **********/