[Bug target/16563] The compiler doesnt the necessary push/restore of r18/r19

[eweddington at cso dot atmel dot com]

------- Comment #6 from eweddington at cso dot atmel dot com  2007-02-14 16:48 -------
Same results with GCC 4.1.1:

00000000 <testfunc>:
   0:   af 92           push    r10
   2:   bf 92           push    r11
   4:   cf 92           push    r12
   6:   df 92           push    r13
   8:   ef 92           push    r14
   a:   ff 92           push    r15
   c:   0f 93           push    r16
   e:   1f 93           push    r17
  10:   f6 2e           mov     r15, r22
  12:   e4 2e           mov     r14, r20
  14:   a0 2e           mov     r10, r16
  16:   b1 2e           mov     r11, r17
  18:   c2 2e           mov     r12, r18
  1a:   d3 2e           mov     r13, r19
  1c:   00 d0           rcall   .+0             ; 0x1e <testfunc+0x1e>
  1e:   8a e0           ldi     r24, 0x0A       ; 10
  20:   00 d0           rcall   .+0             ; 0x22 <testfunc+0x22>
  22:   8f 2d           mov     r24, r15
  24:   00 d0           rcall   .+0             ; 0x26 <testfunc+0x26>
  26:   8b e0           ldi     r24, 0x0B       ; 11
  28:   90 e0           ldi     r25, 0x00       ; 0
  2a:   00 d0           rcall   .+0             ; 0x2c <testfunc+0x2c>
  2c:   8e 2d           mov     r24, r14
  2e:   00 d0           rcall   .+0             ; 0x30 <testfunc+0x30>
  30:   86 e0           ldi     r24, 0x06       ; 6
  32:   00 d0           rcall   .+0             ; 0x34 <testfunc+0x34>
  34:   9d 2d           mov     r25, r13
  36:   8c 2d           mov     r24, r12
  38:   7b 2d           mov     r23, r11
  3a:   6a 2d           mov     r22, r10
  3c:   00 d0           rcall   .+0             ; 0x3e <testfunc+0x3e>
  3e:   1f 91           pop     r17
  40:   0f 91           pop     r16
  42:   ff 90           pop     r15
  44:   ef 90           pop     r14
  46:   df 90           pop     r13
  48:   cf 90           pop     r12
  4a:   bf 90           pop     r11
  4c:   af 90           pop     r10
  4e:   08 95           ret


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16563