Backport from 2013-07-10 trunk r200872.

[pf3gnuchains/gcc-fork.git] / gcc / config / avr / avr.c

diff --git a/gcc/config/avr/avr.c b/gcc/config/avr/avr.c
index 40a37b3..bac87e8 100644 (file)
--- a/gcc/config/avr/avr.c
+++ b/gcc/config/avr/avr.c
@@ -1004,7 +1004,7 @@ avr_prologue_setup_frame (HOST_WIDE_INT size, HARD_REG_SET set)
               leaf function and thus X has already been saved.  */
               
           int irq_state = -1;
-          HOST_WIDE_INT size_cfa = size;
+          HOST_WIDE_INT size_cfa = size, neg_size;
           rtx fp_plus_insns, fp, my_fp;
 
           gcc_assert (frame_pointer_needed
@@ -1043,6 +1043,7 @@ avr_prologue_setup_frame (HOST_WIDE_INT size, HARD_REG_SET set)
             }
 
           size = trunc_int_for_mode (size, GET_MODE (my_fp));
+          neg_size = trunc_int_for_mode (-size, GET_MODE (my_fp));
           
           /************  Method 1: Adjust frame pointer  ************/
           
@@ -1062,7 +1063,7 @@ avr_prologue_setup_frame (HOST_WIDE_INT size, HARD_REG_SET set)
                             gen_rtx_SET (VOIDmode, fp, stack_pointer_rtx));
             }
 
-          insn = emit_move_insn (my_fp, plus_constant (my_fp, -size));
+          insn = emit_move_insn (my_fp, plus_constant (my_fp, neg_size));
           if (frame_pointer_needed)
             {
               RTX_FRAME_RELATED_P (insn) = 1;