(posted before but forgot tag....)

WTF is going on with the Hi-Tech compiler that ships with MPLAB....
A few samples below  (all vars are global chars)., target 16F818

Can anyone think of any explanation for such poor code generation other than deliberately making it
slow to make their paid-for compiler look better ? 

It can't be doing Microchip any favours shipping such a poor performing compiler with MPLAB as it
makes their chips look slow and inefficient.  


365:               irrxsum1+=irbyte1;
   115    087A     MOVF 0x7a, W
   116    00C3     MOVWF 0x43
   117    0843     MOVF 0x43, W
   118    07F4     ADDWF 0x74, F

Should be 2 instructions

366:               ircnt1=0;
   119    1003     BCF 0x3, 0
   11A    3000     MOVLW 0
   11B    1803     BTFSC 0x3, 0
   11C    3001     MOVLW 0x1
   11D    00FB     MOVWF 0x7b

This is especially bizarre - should be 1 CLRF instruction

349:               irtmr1+=bittime2; // bittime2 is a constant
   0DF    300E     MOVLW 0xe
   0E0    00C3     MOVWF 0x43
   0E1    0843     MOVF 0x43, W
   0E2    07F5     ADDWF 0x75, F

Should be 2 instructions


350:               ircnt1++;
   0E3    3001     MOVLW 0x1
   0E4    00C3     MOVWF 0x43
   0E5    0843     MOVF 0x43, W
   0E6    07FB     ADDWF 0x7b, F

Should be 1 INCF instruction

322:               irin=PORTA;
   090    0805     MOVF 0x5, W
   091    00C3     MOVWF 0x43
   092    0843     MOVF 0x43, W
   093    00FC     MOVWF 0x7c

Why is it storing in two places?

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