138 lines
3.6 KiB
Text
138 lines
3.6 KiB
Text
/* sparc desciptor table for ACK target optimizer */
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MAXOP 3;
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OPC_TERMINATOR '\t';
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%%;
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/* useful addressing modes-> */
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NUM,NUM1,NUM2 {is_number(VAL) };
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REG {VAL[0] == '%' };
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A,B,X,Y,Z {TRUE };
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REG_NO_O7 {VAL[0] == '%' && (VAL[1] != 'o' || VAL[2] != '7')};
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NO_O7 {no_o7(VAL) };
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%%;
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/* optimization patterns-> */
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/* tricky because we cannot optimize an instruction that lives in a delay slot */
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/* usage of delay slot: */
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ANY X,Y,Z : st REG_NO_O7,NO_O7 : call A : nop {no_delay(ANY)}
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-> ANY X,Y,Z : call A : st REG_NO_O7,NO_O7 ;
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ANY X,Y : st REG_NO_O7,NO_O7 : call A : nop {no_delay(ANY)}
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-> ANY X,Y : call A : st REG_NO_O7,NO_O7 ;
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ANY X : st REG_NO_O7,NO_O7 : call A : nop {no_delay(ANY)}
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-> ANY X : call A : st REG_NO_O7,NO_O7 ;
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ANY X,Y,Z : mov REG_NO_O7,NO_O7 : call A : nop {no_delay(ANY)}
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-> ANY X,Y,Z : call A : mov REG_NO_O7,NO_O7 ;
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ANY X,Y : mov REG_NO_O7,NO_O7 : call A : nop {no_delay(ANY)}
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-> ANY X,Y : call A : mov REG_NO_O7,NO_O7 ;
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ANY X : mov REG_NO_O7,NO_O7 : call A : nop {no_delay(ANY)}
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-> ANY X : call A : mov REG_NO_O7,NO_O7 ;
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ANY X,Y,Z : st REG,B : b A : nop {no_delay(ANY)}
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-> ANY X,Y,Z : b A : st REG,B ;
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ANY X,Y : st REG,B : b A : nop {no_delay(ANY)}
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-> ANY X,Y : b A : st REG,B ;
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ANY X : st REG,B : b A : nop {no_delay(ANY)}
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-> ANY X : b A : st REG,B ;
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/* inc/dec: */
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ANY X,Y,Z : inc NUM,REG : dec NUM,REG {no_delay(ANY)}
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-> ANY X,Y,Z ;
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ANY X,Y : inc NUM,REG : dec NUM,REG {no_delay(ANY)}
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-> ANY X,Y ;
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ANY X : inc NUM,REG : dec NUM,REG {no_delay(ANY)}
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-> ANY X ;
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ANY X,Y,Z : inc 0,REG {no_delay(ANY)} -> ANY X,Y,Z ;
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ANY X,Y : inc 0,REG {no_delay(ANY)} -> ANY X,Y ;
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ANY X : inc 0,REG {no_delay(ANY)} -> ANY X ;
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ANY X,Y,Z : inc NUM,REG : dec NUM1,REG {no_delay(ANY) && bigger(NUM,NUM1,NUM2)}
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-> ANY X,Y,Z : inc NUM2,REG ;
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ANY X,Y : inc NUM,REG : dec NUM1,REG {no_delay(ANY) && bigger(NUM,NUM1,NUM2)}
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-> ANY X,Y : inc NUM2,REG ;
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ANY X : inc NUM,REG : dec NUM1,REG {no_delay(ANY) && bigger(NUM,NUM1,NUM2)}
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-> ANY X : inc NUM2,REG ;
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ANY X,Y,Z : inc NUM,REG : dec NUM1,REG {no_delay(ANY) && smaller(NUM,NUM1,NUM2)}
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-> ANY X,Y,Z : dec NUM2,REG ;
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ANY X,Y : inc NUM,REG : dec NUM1,REG {no_delay(ANY) && smaller(NUM,NUM1,NUM2)}
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-> ANY X,Y : dec NUM2,REG ;
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ANY X : inc NUM,REG : dec NUM1,REG {no_delay(ANY) && smaller(NUM,NUM1,NUM2)}
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-> ANY X : dec NUM2,REG ;
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/* misc: */
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ANY X,Y,Z : ld A,REG : ld A,REG1 {no_delay(ANY)}
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-> ANY X,Y,Z : ld A,REG : mov REG,REG1 ;
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ANY X,Y : ld A,REG : ld A,REG1 {no_delay(ANY)}
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-> ANY X,Y : ld A,REG : mov REG,REG1 ;
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ANY X : ld A,REG : ld A,REG1 {no_delay(ANY)}
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-> ANY X : ld A,REG : mov REG,REG1 ;
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ANY X,Y,Z : st REG,A : ld A,REG1 {no_delay(ANY)}
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-> ANY X,Y,Z : st REG,A : mov REG,REG1 ;
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ANY X,Y : st REG,A : ld A,REG1 {no_delay(ANY)}
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-> ANY X,Y : st REG,A : mov REG,REG1 ;
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ANY X : st REG,A : ld A,REG1 {no_delay(ANY)}
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-> ANY X : st REG,A : mov REG,REG1 ;
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%%;
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/* auxiliary routines: */
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int is_number(s)
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register char *s;
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{
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while (*s != '\0') {
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if (*s < '0' || *s++ > '9') return FALSE;
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}
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return TRUE;
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}
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int bigger(s,s1,s2)
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char *s,*s1,*s2;
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{
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int n = atoi(s),n1 = atoi(s1);
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if (n >= n1) {
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sprintf(s2,"%d",n-n1);
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return TRUE;
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}
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return FALSE;
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}
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int smaller(s,s1,s2)
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char *s,*s1,*s2;
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{
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int n = atoi(s),n1 = atoi(s1);
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if (n < n1) {
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sprintf(s2,"%d",n1-n);
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return TRUE;
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}
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return FALSE;
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}
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int no_delay(s)
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char *s;
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{
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return s[0] != 'b' && s[0] != 'j' && s[0] != 'r' &&
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s[1] != 'b' && s[0] != 'c';
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}
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int no_o7(s)
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char *s;
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{
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for (;;) {
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while (*s && *s != '%') s++;
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if (*s) {
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if (*++s == 'o') {
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if (*++s == '7') return FALSE;
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}
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}
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else break;
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}
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return TRUE;
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}
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