added patterns for ldc adi/ldc sbi with zero high order word

added patterns for *--p with p register
added patterns to generate cmpb to compare two bytes.
added patterns to use regvar to index global array
added patterns for lol inl
added patterns for external pointer increment/decrement

diff --git a/mach/pdp/cg/table b/mach/pdp/cg/table
index 0e30572..5930efd 100644 (file)
--- a/mach/pdp/cg/table
+++ b/mach/pdp/cg/table
@@ -361,6 +361,8 @@ lol stf inreg($1)!=2 | xsource2 |
                        move(%[1],{regind2,%[a],tostring($2)})  |    | |
 lae lol ads sti $3==2 && inreg($2)==2 |        | 
                                        | {regconst2, regvar($2), $1} | sti $4 |
+lae lol ads loi $3==2 && inreg($2)==2 |        | 
+                                       | {regconst2, regvar($2), $1} | loi $4 |
 #endif
 sti $1==2       | REG xsource2 |
                        INDSTORE
@@ -589,6 +591,16 @@ adi $1==2       | NC SCR_REG CONST2 | | {regconst2,%[1],tostring(%[2.num])} | |
 ...             | source2 SCR_REG |
                        "add %[1],%[2]"
                        setcc(%[2])     erase(%[2])     | %[2]  | | (2,450)+%[1]
+
+ldc adi $2==4 && highw(1)==0 | SCR_REG SCR_REG |
+                       "add $$%(loww(1)%),%[2]"
+                       "adc %[1]"
+                       erase(%[1]) erase(%[2])         | %[2] %[1] | |
+ldc adi $2==4 | SCR_REG SCR_REG |
+                       "add $$%(loww(1)%),%[2]"
+                       "adc %[1]"
+                       "add $$%(highw(1)%),%[1]"
+                       erase(%[1]) erase(%[2])         | %[2] %[1] | |
 adi $1==4       | SCR_REG SCR_REG source2 source2 |
                        "add %[4],%[2]"
                        "adc %[1]"
@@ -627,6 +639,15 @@ sbi $1==2       | source2 SCR_REG |
                        "sub %[2],%[1]"
                        "neg %[1]"
                        setcc(%[1])     erase(%[1])     | %[1]  | | (4,750)+%[2]
+ldc sbi $2==4 && highw(1)==0 | SCR_REG SCR_REG |
+                       "sub $$%(loww(1)%),%[2]"
+                       "sbc %[1]"
+                       erase(%[1]) erase(%[2])         | %[2] %[1] | |
+ldc sbi $2==4 | SCR_REG SCR_REG |
+                       "sub $$%(loww(1)%),%[2]"
+                       "sbc %[1]"
+                       "sub $$%(highw(1)%),%[1]"
+                       erase(%[1]) erase(%[2])         | %[2] %[1] | |
 sbi $1==4       | source2-REG source2-REG SCR_REG SCR_REG |
                        "sub %[2],%[4]"
                        "sbc %[3]"
@@ -1036,10 +1057,22 @@ lol lol adp stl $1==$2 && $2==$4 && inreg($1)==2 | |
 lol lol adp stl $1==$2 && $2==$4 | |
                        allocate(REG={LOCAL2, $1, 2})   | %[a] 
                                                        | lol $2 adp $3 stl $2 |
+lol inl $1==$2 && inreg($1)==2 | |
+                       allocate(REG=regvar($1))        | %[a] 
+                                                       | inl $2 |
+lol inl $1==$2 | |
+                       allocate(REG={LOCAL2, $1, 2})   | %[a] 
+                                                       | inl $2 |
+lol adp dup stl $1==$4 && $3==2 && inreg($1)==2        | | |
+                                       | lol $1 adp $2 stl $1 lol $1 |
 lol adp stl $1==$3 && $2==1 && inreg($1)==2 | |
                        remove(regvar($1))
                        "inc %(regvar($1)%)"
                        erase(regvar($1))               |       | |
+lol adp stl $1==$3 && $2==0-1 && inreg($1)==2 | |
+                       remove(regvar($1))
+                       "dec %(regvar($1)%)"
+                       erase(regvar($1))               |       | |
 lol adp stl $1==$3 && inreg($1)==2 | |
                        remove(regvar($1))
                        "add $$$2,%(regvar($1)%)"
@@ -1069,6 +1102,11 @@ lol adp stl $1==$3 && $2==1 | |
                        remove(locals, %[ind] <= $1 && %[ind]+%[size] > $1)
                        "inc $1(r5)"
                        setcc({LOCAL2,$1,2})            |       | |
+lol adp stl $1==$3 && $2==0-1 | |
+                       remove(indordef)
+                       remove(locals, %[ind] <= $1 && %[ind]+%[size] > $1)
+                       "dec $1(r5)"
+                       setcc({LOCAL2,$1,2})            |       | |
 lol adp stl $1==$3 | |
                        remove(indordef)
                        remove(locals, %[ind] <= $1 && %[ind]+%[size] > $1)
@@ -1078,6 +1116,14 @@ loe adi ste $2==2 && $1==$3 | source2 |
                        remove(posextern)
                        "add %[1],$1"
                        setcc({relative2,$1})           |       | |
+loe adp ste $1==$3 && $2==1 | |
+                       remove(posextern)
+                       "inc $1"
+                       setcc({relative2,$1})           |       | |
+loe adp ste $1==$3 && $2==0-1 | |
+                       remove(posextern)
+                       "dec $1"
+                       setcc({relative2,$1})           |       | |
 loe adp ste $1==$3 | |
                        remove(posextern)
                        "add $$$2,$1"
@@ -2072,11 +2118,19 @@ ble             | source2 source2 |
                        remove(all)
                        "cmp %[2],%[1]"
                        "jle $1"                                |       | |
-beq             | source2 source2 |
+beq             | NC source1 source1 |
+                       remove(all)
+                       "cmpb %[2],%[1]"
+                       "jeq $1"                                |       | |
+...             | source2 source2 |
                        remove(all)
                        "cmp %[2],%[1]"
                        "jeq $1"                                |       | |
-bne             | source2 source2 |
+bne             | NC source1 source1 |
+                       remove(all)
+                       "cmpb %[2],%[1]"
+                       "jne $1"                                |       | |
+...             | source2 source2 |
                        remove(all)
                        "cmp %[2],%[1]"
                        "jne $1"                                |       | |